HomeMy WebLinkAboutAnnual Reports - 6/1/2007TOWN OF ORO VALLEY
WATER UTILITY COMMISSION
�0-%D- 2007 ANNUAL REPORT
Reclaimed Water System
Central Arizona Project
Potable Water System
Town of Oro Valley
Committed to Delivering
Water to Our Community
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TOWN OF ORO VALLEY
WATER UTILITY COMMISSION
ANNUAL REPORT
JUNE 2007
ORO VALLEY TOWN COUNCIL
Paul Loomis, Mayor
Helen Dankwerth, Vice Mayor
Paula Abbott, Council Member
K.C. Carter, Council Member
Barry Gillaspie, Council Member
Al Kunisch, Council Member
Terry Parish, Council Member
ORO VALLEY WATER UTILITY COMMISSION
Dave Powell, Chair
Winston Tustison, Vice Chair
George Calabro, Member
Brent Egbert, Member
John Hoffinann, Member
Elizabeth Shapiro, Member
Harold Vaubel, Member
TOWN STAFF
David Andrews, Town Manager
Philip C. Saletta, P.E., Water Utility Director
Shirley Seng, Water Utility Administrator
David Ruiz, Engineering Division Manager
Kevin McCaleb, Water Conservation Specialist
Charles Soper, Lead Operator/Backflow Specialist
Special recognition to OVWU staff who provided graphics, data, photos and, most of all,
their time to assist in the preparation of this report:
George Kendrick Robert Jacklitch Mary C. Kobida Kam Boyce
Iris Chaparro Carolyn Schneider Jeff Kane Mary Miller
SECTION TITLE
List of Acronyms
Index of Appendices
Executive Summary
Introduction
Water Quality
Current Water Supply
Water Resource Planning
Water Conservation Program
Utility Operations
Security
Capital Improvements
Financial Highlights
Water Rates Analysis
Conclusion
Appendices
TABLE OF CONTENTS
TOWN OF ORO VALLEY
WATER UTILITY COMMISSION
ANNUAL REPORT
JUNE 2007
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LIST OF ACRONYMS
LIST OF ACRONYMS USED IN THIS REPORT
ACH
Automated Clearing House (automatic payment program)
ADEQ
Arizona Department of Environmental Quality
ADWR
Arizona Department of Water Resources
AF
Acre Feet
AWWA
American Water Works Association
BCP
Business Continuity Plan
CAGRD
Central Arizona Groundwater Replenishment District
CAP
Central Arizona Project
CAWCD
Central Arizona Water Conservation District
CIP
Capital Improvement Program
CY
Calendar Year
EPA
Environmental Protection Agency
ERP
Emergency Response Plan
FEMA
Federal Emergency Management Act
FY
Fiscal Year
GAP
Groundwater Action Plan
GIS
Geographic Information System
GPM
Gallons Per Minute
IA
Irrigation Association
ICARE
Incentives, Consultations, Audits, Research, Education
IGA
Intergovernmental Agreement
IOC
Inorganic Compound
ISAC
Information Sharing & Analysis Center
MCL
Maximum Contaminate Level
pCi/L
Picocuries Per Liter
POE
Point Of Entry
ppb
Parts Per Billion
ppm
Parts Per Million
SCADA
Supervisory Control And Data Acquisition
SOC
Synthetic Organic Compound
SSF/RO
Slow Sand Filtration / Reverse Osmosis
TCE
Trichloroethylene
TTHM
Total Trihalomethanes
VA
Vulnerability Assessment
VOC
Volatile Organic Compound
Water CASA
Water Conservation Alliance of Southern Arizona
Water ISAC
Water Information Sharing and Analysis Center
WOW
Water on the Web
INDEX OF APPENDICES
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A. Water Quality
1) Water Quality Testing Results
B. Current Water Supply
1) Static Water Level Measurements
C. Water Conservation Program
1) Map: Theoretical Specific Capacities — 2003
2) Map: Theoretical Specific Capacities — 2005
3) Map: Big Wash Multi -use Pilot Project
4) I. C.A.R.E.
D. 5-Year Capital Improvement Program
1) Existing Potable System Improvements
2) Expansion Related Potable System Improvements
3) Reclaimed Water System Improvements
E. Reclaimed Water System Phase 2
1) Map: Reclaimed Water System Phase 2
F. Utility Statistics
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EXECUTIVE SUMMARY
TOWN OF ORO VALLEY
WATER UTILITY COMMISSION
ANNUAL REPORT
JUNE 2007
In October 1996 the Oro Valley Town Council (Mayor and Council) formed the Oro Valley
Water Utility Commission (Commission) to act as the official advisory body to the Mayor
and Council regarding water related issues. The Commission is required to prepare an
annual report to the Mayor and Council each year. This report is the Commission's ninth
Annual Report. It includes topics on water quality, water supply, water resource planning,
conservation, and capital improvements.
The Executive Summary contains a briefing on several of the Utility's significant operations
during this past year as well as projects specific to water issues facing the Town of Oro
Valley (Town) in FY 2007-08 and beyond. Explanations that are more detailed may be
i found in the report and the appendices.
IWATER QUALITY
For the fifth consecutive year, the Utility is proud to report that it did not experience any
j water quality violations for Total Coliform bacteria. The number of samples taken in 2006
J was 943 and no contaminant was found to exceed the Maximum Contaminant Level
established by Federal and State Standards. This is an accomplishment that is due to Staffs
Jdiligent operation and monitoring of the water system for our customers.
CURRENT WATER SUPPLY
Continuation of the drought and pumping of groundwater have caused groundwater levels to
further decline, which in turn reduced the production capability of the existing system.
Implementation of the first phase of the reclaimed water system has begun to slow the
groundwater decline, thus preserving the potable water supply. The use of reclaimed water is
J a significant accomplishment, but it is not the only resolution to sustained reliability. The
Utility will need to take an aggressive approach to water resource planning.
l The Utility continues to provide Kai Farms with Central Arizona Project (CAP) water for
J irrigation use. In return the Utility will continue to receive long term storage credits that may
be used to offset groundwater pumping costs assessed by the Central Arizona Groundwater
j Replenishment District (CAGRD). Participation in the Lower Santa Cruz River Managed
J Recharge Project also provides the Utility with long tern storage credits. The use of CAP
water for direct use by the Town may be deemed necessary sooner than previously projected.
1 The Utility is currently working with other water providers in the region to evaluate
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treatment and conveyance infrastructure required for direct delivery of CAP water in the
northwest Tucson area including Oro Valley, Marana and portions of Pima County served by
Metropolitan Domestic Water Improvement District and Flowing Wells Irrigation District.
RECLAIMED WATER SYSTEM
In October 2005, the Town of Oro Valley began delivering reclaimed water to the three
existing golf courses north of Tangerine Road. In 2006 these three golf courses used
approximately 488 million gallons or 1,500 acre feet of reclaimed water, replacing potable
groundwater previously used. Currently, the Water Utility is designing Phase 2 and
construction is estimated to be completed during the spring of 2008. When completed, Phase
2 will deliver reclaimed water to the two existing Hilton golf courses on La Canada Drive
south of Tangerine Road and to Painted Sky Elementary School on Woodbume Avenue
south of Moore Road. Converting the two existing golf courses and the school to reclaimed
water will save approximately 326 million gallons or 1,000 acre feet per year potable
groundwater.
CONSERVATION
The Water Conservation Program continues to be a vital asset in assisting the Utility to
achieve its overall water management goals. During the past year, the primary focus of the
conservation program has been on residential water use audits. Since the program's inception
in 2003, participating customers have collectively saved an average of over 2,000,000
gallons of water in the first year after receiving an audit. In addition to water use audits, the
Town Council approved code changes related to graywater, rainwater harvesting, and point
of service hot water recirculation systems.
WATER RATES ANALYSIS
The functions and duties of the Commission include reviewing and developing
recommendations for water revenue requirements, water rates and fee structures. Those
recommendations will be provided in a separate report. The Water Rates Analysis Report
will be submitted to the Town Council at the June 6, 2007 Council Meeting.
CONCLUSION
The Oro Valley Water Utility Commission is proud to serve the Mayor and Council of the
Town of Oro Valley and its residents and customers. We are pleased to present our Annual
Report to the Mayor and Council for their consideration. While much has been
accomplished in the past year, the Water Utility Commission and Staff look forward to
1 direction regarding those items detailed in the Report. We thank the Mayor and Council for
J their consideration, direction and guidance.
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TOWN OF ORO VALLEY
WATER UTILITY COMMISSION
ANNUAL REPORT
JUNE 2007
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The Oro Valley Water Utility is completing its tenth year of operation. During this time, the
Utility has achieved a number of significant goals. The Town Council recently approved a
new subcontract with the Central Arizona Water Conservation District (CAWCD) for a total
of 10,305 acre feet (AF) of Central Arizona Project water. This is due to the recent Arizona
Water Settlement. We continue to operate under the Intergovernmental Agreement with
Tucson Water regarding reclaimed water. Phase 1 of the reclaimed water system was
constructed and began delivery of reclaimed water to three golf courses in October 2005 and
Phase 2 of the reclaimed water system is now in design. During the past several years, the
Utility has also implemented several programs including system -wide continuous
disinfection, water conservation, and security. Over the past ten years the Utility's customer
base has increased by over 6,800 connections for a total of 17,652 as of December 2006. The
Utility's infrastructure has grown to meet the demands of the increased population with the
addition of new wells, increased reservoir capacity, the addition of numerous pump stations
and miles of water main. During 2006, over 2.75 billion gallons of potable water was
delivered to our customers and over 488 million gallons of reclaimed water was delivered for
irrigation.
The following are some of the Utility's assets and resources as of December 31, 2006:
Assets:
Resources:
Reservoirs:
15
Employees:
35.5
Reservoir Capacity: 9,098,000
Gals.
Groundwater Supply
13,384 AF/year
Water Mains (miles)
350 +
Reclaimed Water:
1,500 AF/year
Booster stations
26
Effluent Water:
1,000 AF/year
Wells:
21
CAP Water:
10,305 AF/year
Well Pumping Capacity
9,929 GPM
Long Term Storage Credits:
21,421 AF
WATER QUALITY
There is a complex and extensive framework in place to ensure clean, safe drinking water is
served by every public water system in Arizona. Protection of drinking water quality starts
with an assessment of the drinking water source quality and continues through regulations
that govern water system design and construction. Finally, drinking water quality is assured
through scheduled tests required of all public water systems for a wide variety of potential
contaminants. As a result of these regulations and continued testing, drinking water supplies
in the United States are among the cleanest and safest in the world.
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Over the course of a year the Utility collects hundreds of water samples from approximately
19 "point of entry" sites including groundwater wells, reservoirs and pumping stations. In
addition, the Utility also samples from 47 "sampling stations" located in neighborhoods
throughout the water distribution system specifically selected to represent the water quality
that is delivered to our customers. Lead and copper samples are taken from 50 private
residences within the Oro Valley area. The Utility provides all water quality testing results to
the Arizona Department of Environmental Quality (ADEQ) and works closely with that
agency to ensure all federal and state standards are met.
The Utility's state certified water operators are responsible for the health and safety of our
customers. The operators meet this responsibility with continuing education, training, and by
maintaining a daily vigilance over the system's production, distribution, and water quality.
Additionally, comprehensive emergency plans have been developed to ensure an immediate
J response to any adverse water situation. The Town's water system is in full compliance with
all state and federal regulations.
J In 2006, the Utility received 893 analytical results for required water sampling that was
performed. Refer to Appendix A for the Environmental Protection Agency's required
contaminant monitoring list and the Utility's most recent analysis.
The Utility regularly receives inquiries concerning water hardness. Water hardness is a
measurement of the concentration of calcium and magnesium. The hardness levels in Oro
Valley range from 2.0 to 4.7 grains per gallon. These levels are considered low and as such
water softeners would not be required. Hardness levels above 10 grains per gallon could
1 shorten the life of water using appliances.
J Drinking water standards are regulations that the Environmental Protection Agency (EPA)
sets to control the level of contaminants in the nation's drinking water. These standards are
J part of the Safe Drinking Water Act's "multiple barrier" approach to drinking water
protection which includes assessing and protecting drinking water sources; protecting wells
and collection systems; making sure water is treated by qualified operators; ensuring the
integrity of distribution systems; and making information available to the public on the
quality of their drinking water. Community water suppliers throughout the country are
required to provide an annual water quality report to their customers. The report provides
information about your drinking water's source, and any contaminants detected in the water.
Oro Valley's Consumer Confidence Report is annually distributed to all customers in June.
The Report is also available in the Utility's office and on the website.
JThere are two categories of drinking water standards: 1) A National Primary Drinking Water
Regulation or primary standard, and 2) A National Secondary Drinking Water Regulation or
Jsecondary standard. The primary standard is a legally enforceable standard that applies to
public water systems. Primary standards protect drinking water quality by limiting the levels
of specific contaminants and constituents that can adversely affect public health and are
Jknown or anticipated to occur in water. They take the form of Maximum Contaminant Levels
or Treatment Techniques. The secondary standard is a non -enforceable guideline regarding
contaminants and constituents that may cause cosmetic effects (such as skin or tooth
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discoloration) or aesthetic effects (such as taste, odor, or color) in drinking water. The EPA
recommends secondary standards to water systems but does not require systems to comply.
However, the ADEQ requires the Utility to sample these contaminants every three years. A
list of contaminants and compounds and the most recent analysis for the Utility are included
in Appendix A.
It is important to remember that the detection of a constituent in drinking water does not
necessarily represent a threat to public health. Current technology allows water utilities to
detect extremely low levels of constituents in drinking water. All drinking water, including
bottled water, may reasonably be expected to contain at least small amounts of some
constituents. Oro Valley's groundwater contains naturally occurring dissolved minerals and
organic compounds, which have been leached from the rock, sediments, and plant materials
through which the water traveled. One would expect to find minerals such as calcium,
7 magnesium, chloride, bicarbonate, sulfate, and metals such as iron, copper, arsenic and lead,
which may be either beneficial or harmless at low concentrations, but harmful at high
concentrations.
JOther contaminants that may be present in source water are microbial contaminants, such as
viruses and bacteria. The Utility disinfects its water source by adding chlorine at a level of
J 0.2 to 0.5 parts per million (ppm), as a precaution against bacterial growth. The Total
Coliform bacteria group is used as an indicator to more closely monitor the distribution
system for possible unwanted bacteria. During the past five years, the Utility has collected
j 2,487 samples for analysis of Total Coliform bacteria, none of which resulted in a detection.
J This is a direct result of a successful disinfection program and proficient sampling methods.
l Two inorganic compounds found in groundwater are presently of special interest. These
J compounds are arsenic and fluoride. Arizona is among a handful of western states whose soil
contains naturally high levels of arsenic, which can increase risks for some types of cancer.
J As of January 2006, all water systems are required to comply with the EPA's new Maximum
J Contaminant Level (MCL) for arsenic of no more than 10 parts per billion (ppb) as compared
to the previous standard of 50 ppb. Roughly one-third of the systems subject to the new
J standard presently exceed the 10 ppb standard. In 2004, the Utility conducted compliance
J tests for arsenic in its wells. The analysis ranged from "no detect" to 3.2 ppb. These results
are significantly below the new arsenic MCL. Oro Valley's groundwater has fluoride at low
1 concentrations ranging from 0.15 to 1.0 ppm.
Water regulations continue to increase in complexity and cost. Early in 2006, EPA released
1 the STAGE 2 Disinfectants and Disinfection By -Products Rule. This is an important
J component to the agency's multi -pronged strategy to reduce drinking water risks to human
health through improved standards for pathogens as well as disinfection by-products. The
Utility's disinfection program was implemented for both systems in 2002.
Oro Valley is a growing community in an and environment. The future of drinking water
quality will continue to command serious attention by everyone involved with water supply
for the community. Compliance requirements will continue to increase in complexity and
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County Wastewater Facilities and then delivered through Tucson Water's reclaimed water
conveyance system.
Undeveloped Water Resources
• Central Arizona Project Water: 10,305 acre feet per year
• Effluent Water: 1,000 acre feet per year
• Long Term Storage Credits: 21,421 acre feet
J The Town currently has an allocation of Central Arizona Project (CAP) water in the amount
of 10,305 AF per year under the recent contract with CAWCD. Once the Utility receives the
executed contract, it will proceed with court validation. At this point in time, the
infrastructure necessary to convey CAP water to the Town does not exist, making direct use
impossible.
1 Currently, the only CAP water the Town utilizes is for recharge pursuant to an agreement
with Kai Farms. The Utility stored 3,996 AF of CAP water in 2006 under the Kai Farms
Agreement. Long term storage credits have accumulated to approximately 21,268 acre feet.
Additionally, the Utility is a partner in the Lower Santa Cruz Managed Recharge Project in
which effluent water is recharged in the lower Santa Cruz River. Long term storage credits
J accrued through this project are approximately 153 acre feet. The Utility will continue to use
long term storage credits to reduce a portion of the costs that are assessed annually by the
CAGRD. The Utility will continue to recharge CAP water until such time the water is
needed for direct delivery.
J Included in the Town's Designation of Assured Water Supply is 4,000 AF per year of
J effluent. Again, this was a direct result of the IGA with Tucson Water. The Town is
currently using only a portion of this supply to irrigate three of the local golf courses. The
second phase of the Reclaimed Water Delivery System is in the design stage with
construction expected to be completed by the fall of 2008 and will provide reclaimed water
to Painted Sky Elementary School and two 18-hole Hilton El Conquistador Golf Courses. It
is estimated that approximately 1,000 AF per year of reclaimed water will be delivered to
J these customers. In the future, an additional 1,500 AF per year of effluent will be available
J to the Town due to additional growth. This effluent will be used for reclaimed water or for
groundwater storage credits.
WATER RESOURCE PLANNING
In the coming year, the Utility will be developing a comprehensive Water Resource Plan.
This plan will encompass recommendations included in the Groundwater Action Plan, the
Potable Water System Master Plan, the Reclaimed Water System Master Plan and work in
progress on plans for direct delivery of CAP water to the Town. The Water Resource Plan
will investigate alternatives for future water supply and delivery. It will include the
following: groundwater, reclaimed water, CAP water and conservation. Water Resource
Planning will involve technical, financial, legal, political, institutional and environmental
issues. Involving the public will be a key aspect of a successful program for future water
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supply. Funding for the Water Resource Plan has been included in the Utility's budget for
FY 2007-08.
Reclaimed Water
� The second phase of the Reclaimed Water Delivery System is currently in the design stage
l l with construction expected to be completed by spring of 2008. The use of reclaimed water
for turf irrigation will have a beneficial impact on the Utility's ability to meet potable water
demands during peak use months. The Utility will continue to aggressively look for ways to
expand the customer base of the reclaimed water system for irrigation purposes other than
turf.
J Even with the use of reclaimed water, Oro Valley will remain dependent on groundwater for
a portion of their water supply well into the future. The Potable Water System Master Plan
J indicates the need to continue to add new wells and rehabilitate existing wells long after
implementation of the reclaimed water system.
CAP Water Delivery System
The Town has been cooperating with other Northwest area water providers, Metropolitan
Irrigation District, Flowing Wells Irrigation District, the Town of Marana and the United
States Bureau of Reclamation to develop a regional CAP water delivery system within the
L northwest Tucson area. In 2000, a conceptual plan for the direct delivery of CAP water to
customers in the northwest area was developed with various treatment methods researched
and investigated. In concept, the northwest water providers would construct a turnout for
CAP water in the vicinity of Moore Road alignment and Interstate 10, a reliability water
storage reservoir, a treatment plant and a transmission system capable of treating and
delivering approximately 30,000 acre feet per year (24 millions gallons per day) of CAP
water into the northwest area. Preliminary costs were developed for the alternative treatment
and delivery systems by the U.S. Bureau of Reclamation. Through a cooperative agreement,
the Northwest area water providers hired Carollo Engineers to review the previous study,
investigate options for the treatment and delivery alternatives and develop updated costs.
This study is scheduled to be completed in July or August of 2007. Costs will be split among
the four participating water providers. Oro Valley's share of this project is estimated to be
60 to 75 million dollars. A financial analysis will also be prepared to look at ways to fund
this project. The analysis is expected to complete in September of 2007. The Northwest area
water providers are planning for delivery of CAP to start the in 2012 to 2014. The Town of
Oro Valley is committed to the direct use of CAP water and will continue to work with our
Jpartners to see that this concept becomes a reality for our communities.
CAP Water Pilot Project
The Town of Oro Valley, along with the other Northwest area water providers, has developed
a pilot study in cooperation with the Bureau of Reclamation and the University of Arizona to
investigate water quality and salinity issues related to the treatment of CAP water. In a
previous pilot study sponsored by the Bureau of Reclamation and completed in 2002, slow
sand filtration and reverse osmosis were shown to be an effective means of treatment for
CAP water. However, that pilot project only operated for seven months and did not include
the hotter summer period. This new pilot study will be conducted for longer than one year
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and will include the use of halophyte (salt tolerant plants) irrigation as a means of disposing
the concentrate (salts) created by using reverse osmosis. This project is located on the west
side of Interstate 10 and just south of Tangerine Road.
Conservation
Water conservation will continue to be an important element in the overall management of
our water resources. With declining water levels and potential water shortages on the
Colorado River, educating our customers in conservation methods should remain a priority.
In November 2006, a Drought Preparedness Plan was presented to the Town Council.
Council approved submitting the Plan to the ADWR. The Utility's water conservation
program is discussed in detail below.
WATER CONSERVATION PROGRAM
Southern Arizona has been plagued by what is commonly referred to as a prolonged and
significant drought. The continuing cycle of low seasonal rainfall and extended periods of
extreme temperatures has led to discussions by many experts as to whether a climate shift is
occurring. The drought may become accepted as a normal condition in the future. Climatic
changes will affect not only the natural environment and ultimately the way in which water is
managed by the Town.
In the last three years the amount of natural recharge for the Town has dropped from an
estimated annual volume of 5,000 AF to the current estimate of less than 1,000 AFI. The
dramatic reduction in the total area of aquifer over the last three years is illustrated in the
Theoretical Specific Capacity maps for 2003 and 2005. These maps may be found in
Appendix C. The Utility recognizes the complexity and importance of sustained reliability.
The following paragraphs provide insight into the various policies and programs that support
water conservation.
Currently the Utility is expanding the reclaimed water program and planning is under way for
the future delivery of CAP water. These steps will lighten the demands placed upon the
aquifer but will not eliminate the necessity for continued pumping of groundwater at levels
that may exceed the capacity of natural recharge. Conservation of groundwater resources is
1 an integral part of the Town's future sustainability. The conservation program continues to
J be an important element in the overall water resource management efforts of the Utility.
The Water Utility Commission recommended that Town Council approve three new
ordinances to provide Oro Valley customers more options to expand their conservation
efforts. Changes were made to the Water Code to encourage the use of graywater and
J rainwater as alternative water sources for landscape irrigation. The Code changes also
included guidelines and restrictions for the installation and use of graywater and rainwater.
The Utility worked with the Building Safety Department in changing the Building Code to
l mandate the installation of under the counter electrical outlets for point of service hot water
J' Brown and Caldwell Groundwater Action Plan: 2003 and 2006 respectively
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recirculation pumps. This will greatly reduce the cost incurred by residents that wish to
n install this equipment
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The Utility has complied with a directive from ADWR by creating and filing a Drought
Preparedness Plan. The Plan uses specific climatic conditions and groundwater levels to
identify and declare a particular stage of drought for the Utility's water service area. Each
stage identifies specific actions and restrictions that must be adhered to by all Utility
n customers as well as actions to be taken by the Utility itself. The Plan was designed using
Jparameters that would be unique to the Town.
n The conservation staff is moving forward with design and funding acquisition plans for the
Big Wash Multi -Use Pilot Project study in an effort to enhance natural recharge
opportunities. The study is being planned for a location on State Trust Lands north and west
of Rancho Vistoso Boulevard, just north of Innovation Park Road. The project is being
developed jointly with the Water Utility and the Stormwater Utility division of Public Works,
with funding already committed by Pima County Regional Flood Control District. The
n objectives of the study are to stem the erosion on the banks of the wash near developments
J on both sides of the channel, mitigate peak flows during monsoonal rain events by slowing
flow velocities and spreading the water flows out over a greater area of the wash. This will
allow monsoonal flows to remain in a specific portion of the wash for an extended period of
time thereby facilitating more water to infiltrate the aquifer. A map of the project may be
j found in Appendix C.
J Audits
Residential and commercial water audits continue to function as a key tool in the water
conservation program. Audits are valuable to education and create an awareness of water
J consumption by homeowners, businesses and communities as a whole. Since the program's
inception in May of 2003, staff has completed approximately 200 residential water audits
each year. More than 800 audits have been completed to date.
AVERAGE MONTHLY PARTICIPATION
2003-2006
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20
15
10
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0
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC
MONTH
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Audits allow for a number of important conservation issues to be addressed while
n maintaining a cooperative relationship with the public. Customers are informed on general
lJ water conservation practices and principles. Irrigation systems and swimming pools, as well
as interior household fixtures and appliances, are assessed for efficiency and proper use
n methods. Water use strategies are specifically tailored to the individual's water use habits
J and landscape needs. In addition, any observed leaks or equipment malfunctions are brought
to the attention of the customer as well as any code violations with regard to backflow
n prevention. Of the 200 audits completed in 2006, approximately 30% of the backflow
l J assemblies were improperly installed. Improper backflow protection is a public safety
concern due to the potential for contaminants and pollutants to enter the potable water
n supply. Once the Utility informs the customer of the situation, it is the customer's
J responsibility to remedy the situation as soon as possible.
n Data collected during the audit is used to assess and recommend changes that may be needed
J to improve water use management. The Utility also uses the data collected in audits to
identify the concerns of customers and help direct the focus of the Conservation Program.
fl Water use by audit participants is tracked for one full year prior to the audit and then
compared to their use for a minimum of one full year after the audit. Analysis of these
statistics allows the Utility to identify trends in town -wide water consumption, and helps
evaluate the progress of the program. Between 2003 and 2004, water consumption dropped
Jan average of 22% in the first year after the audit resulting in a collective reduction of water
use over 2,500,000 gallons. Although overall average water savings decreased in 2005, the
j results remained positive as participants saved 1,124,000 gallons of water.
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Post Audit Water Use
15, 000, 000
13,000,000
11,000,000 -
9,000,000 - ■ Pre Audit
7,000,000 ❑Post Audit
5,000,000
3,000,000
1,000,000
2003 2004 2005
Year
The decline in savings reported for 2005 may have been due to a particularly dry year with
regard to total rain fall as well as other factors. The Utility continues to monitor how
climatic conditions are affecting customer water use.
Education and Resources
�As part of the education aspect of this program, the Utility has revised and expanded its free
l literature offerings. In 2006 the Utility re-evaluated the literature that is provided to
residents. Focusing on issues directly affecting the Town of Oro Valley, new literature
n includes: Protecting Groundwater, Ways to Conserve Our Water Supply, Water
Il 11 Emergencies, an updated version of Water Harvesting and Graywater use booklets,
Landscape Plants for the Arizona Desert, Plumbing Handbook Guides, Landscaping by the
Numbers and Watering Can Be Efficient. These resources are offered to customers at no
charge in the Utility office along with toilet dye strips. Landscape irrigation schedule cards
are available to all residents and are handed out during audits to assist residents with
n appropriate watering guidelines related to plant type. Literature available for younger
Jresidents has also been revised to include activity booklets with a companion teacher's guide
that promote water conservation, protecting our groundwater and respecting our water
supply. These have been well received for use by local scout troops and summer day care
programs.
The Utility sponsors professional level classes on landscape irrigation design through their
membership with the Irrigation Association. It is the Utility's intent to continue to sponsor
this type of training and expand educational opportunities for irrigation/landscape service
providers in water issues, management techniques and design applications relevant to water
conservation in and for the Oro Valley Water Utility service area.
The water conservation staff continues to work with all divisions of the Utility. Water
conservation is a team effort and the Utility's Administration, Distribution, Production and
Engineering Divisions provide valuable assistance and support on conservation projects.
The customer service staff serves a vital role in the conservation efforts of the Utility by
offering water saving tips to customers. They are often the first contact that customers have
when looking for solutions to save water. The customer service staff provides water
conservation literature, free household retro fit nozzles, and tracks the sale of rain sensors.
The customer service staff assists conservation staff with retrieving customer water use data
for graphs, educational functions and many other conservation projects.
Distribution staff have assisted with the goals of the Utility on conservation by notifying
customers of high water use when meters are being read and by referring customer questions
and requests for assistance to conservation staff. Additionally, they have assisted by
performing meter accuracy tests, meter replacements and by identifying potential homeowner
problems in water quality, pressure and backflow code issues.
Production staff assists by making available production data on potable water resources as
well as the reclaimed water system. Information such as static water levels, pump outages
and water use demands are offered to assist the conservation staff in providing accurate
information to residential and commercial customers. Production and Conservation staff will
l be cooperating on the development of future projects such as Big Wash, the Drought
J Preparedness Plan and weather station installations.
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The Utility continues to encourage sound water management practices for its customers and
other Town departments with the five major concepts of the conservation program. For
rj details please refer to Appendix C. This program researches current water management
methodologies and technologies and tailors them so that are relevant and usable by customers
n of the Oro Valley Water Utility
Short Term Goals
As previously noted, the Utility filed with ADWR a "Drought Preparedness Plan". The Plan
uses climate conditions to indicate if or when a particular stage of drought is declared. The
Utility currently relies on data from sites outside of Oro Valley to make those determinations,
which in many instances are not indicative of conditions within Oro Valley. The Utility will
be considering the purchase and installation of three to five stand alone weather stations that
will generate accurate climate data. These weather stations are solar powered and would be
j placed in appropriate well sites throughout the Town. The stations would not only gather
J accurate weather data for the drought plan, they would also gather information on
environmental conditions that affect the water use of plants. The data would then be
j� converted into an easy to use link on the Utility's website that customers could access to help
�J them more accurately schedule their irrigation times.
rj Town -wide Water Conservation Policy
�J The benefits of water conservation extend well beyond the boundaries of the Utility. In
addition to complying with State mandated conservation goals, maintaining a sustainable
water supply greatly enhances the Town's ability to continue economic development as well
as residential growth. Yet the burden for funding these educational programs, customer
assistance programs, conservation incentives and many other programs that foster easier
transitions for the customer base into better water use efficiency rests entirely upon the
J Utility. A water conservation policy for the Town as a whole would help to encourage all
Town departments and facilities to better monitor and manage their water use as well as
J provide potential funding sources for a variety of and substantially more significant incentive
programs than we are currently able to offer. Developing a Town -wide Water Conservation
Policy will establish water conservation as paramount to the Town's future. The Policy will
J facilitate cooperation among other divisions and departments as they work with developers
J and builders, insuring conservation is at the fore front of conversations and would allow for
the introduction of material and installation specifications geared toward raising water use
Jefficiencies that would be uniform throughout the Town.
Long Term Goals
The Commission's work plan for future years will encompass evaluation of code changes,
educational classes and certification programs that will include comprehensive specifications
on irrigation equipment, installation and quality control. Data obtained from water audits
indicate that many of the irrigation systems currently installed are problematic. Typically
they are installed lacking a sufficient number of valves (zones), or designed and installed
with substandard materials and/or construction methods contrary to efficient irrigation
practices. Presently the Town Code contains rudimentary standards on the installation of
irrigation systems and residential backflow prevention assemblies. The existing building
codes on irrigation/landscape installations make only general references to required
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equipment for installation. The Utility proposes to create classes to educate and provide a
certification process for contractors that perform irrigation and landscape work in Oro Valley
and to develop a list for the public that will reflect the names and contact information of
those contractors who have successfully completed the course.
Due to the number of seasonal residents and also the number of residents new to southern
Arizona, there is a general lack of knowledge on proper landscape watering methods unique
to the and southwest. There are also a high number of residents with a general lack of
understanding on how to use and maintain their irrigation system properly. To bridge this
information gap, the Utility will consider classes in irrigation and plant management
targeting the residential end user. These classes will be offered in a series to help residents of
Oro Valley become familiar with acceptable gardening practices for the Sonora Desert
region. In addition, the classes will assist residents in directing the activities of the service
providers they may choose to hire and assist in insuring the level of management is
consistent during periods of absence.
The Big Wash Multi -Use Pilot Project will generate data for enhancing natural recharge in
the Oro Valley service area. The data gained from this project will enable the Utility to
identify and enhance recharge sites throughout the Town and potentially increase natural
recharge capabilities.
Pressures of growth encroach upon our natural terrain and modify the surface to
accommodate housing and roadways. Therefore, less water infiltrates through the soil and
more overland flow or runoff occurs. The stormwater runoff becomes more of an issue in
relation to volume and velocity than any natural recharge potential. The washes that drain
the runoff are becoming taxed from the increased volumes and velocity of water entering
them during a rain event. Water which normally adds to our annual recharge is being moved
along at a greater speed and is being concentrated into smaller channels, thus remaining in
the washes for a shorter length of time with less infiltration and percolation. As a result we
are losing even more of our potential for natural recharge. Wash modifications, in some
instances, must be made to decrease the velocity of the water to handle the greater volumes
that are being generated.
The Oro Valley Community Display Garden
1 The Oro Valley Display Garden continues to be a project to be built in the future. The site
J formerly selected is under consideration as a possible building site to accommodate space
needs for the Town's staff and facilities. Alternate sites are currently being considered as
possible locations, but as of yet, no determinations have been made. The Commission and
the Utility support the construction of this project when a suitable site is chosen.
l It is the intent of the Commission to include these short term and long term goals in the work
J plan for FY 2007-08 as well as future years. The Commission looks forward to returning to
Mayor and Council with specific recommendations regarding proposed programs.
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UTILITY OPERATIONS
f l Production Facilities Division
Utility personnel in the Production Facilities Division are responsible for the operation and
n maintenance of 21 wells, 26 booster stations, and 15 reservoirs. The Utility continues to be
l J proactive in the implementation of maintenance programs and facility upgrades. The
development of an overall preventive maintenance program is on -going. Facility sites are
�j evaluated annually to determine necessary upgrades to ensure efficient operation of the
l l facilities. A continuing and on -going effort to retrofit water level sensing equipment in each
of the production wells will help the Utility collect monthly data on the aquifer levels of each
�j well. Monthly monitoring of the water levels will help the Utility identify potential problems
l l with either the pumping unit and/or the well itself and schedule required maintenance before
a well and/or pumps fail. The SCADA system is in a constant state of improvement and
rj programming to streamline operations and provide critical trending of data. The SCADA
�J system has been centralized and currently monitors and controls all potable and reclaimed
system facility sites. The SCADA system is continuously monitored by Utility staff.
Production facilities staff is also responsible for the installation of security devices at the
Utility's facilities as well as the security program in general.
Distribution Facilities Division
Utility personnel in the Distribution Facilities Division are responsible for the operation and
maintenance of over 350 miles of water main, approximately 2,100 fire hydrants, and
f� hundreds of valves. The Staff continues to pursue maintenance programs that keep the
�j distribution system functioning properly and minimize problems that are inherent to water
systems. Data bases have been established for hydrant and valve programs that help identify
maintenance cycles and monitor equipment to provide for proactive replacement programs.
This year the Distribution Personnel utilized a new computer mapping system that is
accessed from laptop computers used in their vehicles. The availability of system maps at
their fingertips will increase their efficiency in performing daily assignments.
During this past year, the Utility received numerous letters from customers who received
assistance from Distribution Personnel that exceeded their expectations. This is confirmation
of the professional and courteous performance of Utility Personnel.
Engineering Division
The Engineering Staff continues to manage the capital improvement program, facilitate new
development, conduct water resource planning, plan for the acquisition and use of alternative
water resources and maintain a Geographic Information System (GIS) program. Maps
created using GIS are providing benefits to all Utility staff. Construction Inspectors and
Operation's staff are now able to access water system base maps via lap top computers in the
field. This is a major benefit and departure from the days where hard copies had to be
created and carried into the field to view existing buried water infrastructure. As the
engineering staff continues to develop the GIS system it will provide the analytical capability
to develop the Utility's master plan updates and will be able to collect, store, analyze and
combine vast amounts of data needed for hydraulic modeling. Once the GIS program is fully
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implemented, the dependency on outside consultants will be reduced which will result in a
n significant cost savings to the Utility.
1
Customer Service Division
n Customer Service personnel include Customer Service Representatives and Utility Operators.
J This Staff is responsible for meter reading, billing and collection for 17,652 customer
connections. They are provided the resources to obtain a variety of training including
handling stress, confrontational customers, security and utility related software. Staying
rj abreast of new information is a key element to consistently improving customer service as
well as providing for the mental and physical well being of Utility employees.
The Utility has received excellent response from customers regarding the implementation of
the Water on the Web (WOW) site which is the ability to access customer account
information on the internet. The information is available through the Town's web site and is
updated weekly to provide current billing and payment information as well as a two year
history of water usage. In the future the Utility will explore adding the e-bill feature that is
now available through the billing software.
The Utility currently offers an automatic payment program (ACH) in which the amount of
the customer's water bill is automatically deducted from their checking or savings account.
However, the Utility frequently receives inquiries regarding on-line payment capability and
the use of credit cards to facilitate payment of water bills. The Customer Service Division
will be examining the possibility of these applications. In addition to providing enhanced
customer service, successful implementation of alternative payment methods could reduce
the volume of delinquent accounts and assist those customers who frequently travel.
Utility statistics including new meter installations, customer contacts, and water deliveries
for CY 2006 may be found in Appendix F.
SECURITY
The Public Health Security and Bioterrorism Preparedness and Response Act was enacted in
2002. This federal mandate required the Utility to perform a Vulnerability Assessment (VA)
and develop an Emergency Response Plan (ERP) that addresses the vulnerabilities identified
by the VA. The VA for the Oro Valley Water Utility and the certification that the ERP was
completed was submitted to the EPA and ADEQ in June 2004. The VA and the ERP are
reviewed on an annual basis so that they are kept up to date on any changes to the Utility
operational situation.
JFollowing completion of the VA, the Utility began to implement a program that would
address and correct elements identified in this document. The changes are designed to
"harden" the facilities against potential threats from the acts of people who wish to do harm
Jto the residents of Oro Valley. The Utility will continue to implement elements defined in
the VA as well as those that may be identified through the course of business.
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Utility personnel, with the assistance of a security consultant, continue to review and refine
n the security program. Under the security program a series of training classes and exercises
Jare made available to the Utility Staff on an annual basis as per the guidelines from the
Department of Homeland Security. Essential Utility personnel have also completed the
n training and certification for Incident Management courses provided by FEMA. A Business
J Continuity Plan (BCP) has been developed that will facilitate the ability of the Utility to
continue vital administration and business services in the event of a disaster. The BCP is in
n its final draft stage and can be fully utilized at this point.
l The hydrant lock program continues to be implemented through the new development
process and all hydrants within Oro Valley systems are covered. Extensive cooperation is
maintained with the three fire districts serving Oro Valley Water Utility customers as well as
Oro Valley Police Department and other area water providers. Additionally, new and/or
enhanced barrier fencing is being installed at all active production well facilities. This
should be under contract by the summer of 2007. Intrusion detection equipment continues to
be installed at all reservoirs, booster and well sites. All new capital improvement designs
incorporate the required security enhancements. Production facilities staff is responsible for
the installation of security devices at the Utility's facilities as well as the security program in
general.
Several recommended testing devices have been purchased for testing water samples under a
first response scenario. This equipment is capable of giving instantaneous results on a broad
j spectrum of constituents. Furthermore, a program has been initiated to chemically
J characterize ("fingerprint") the water produced on a daily basis. This will help identify any
1 anomalies during a suspected event.
J Future system enhancements will include installation of real-time water quality monitoring
devices that will be tied to SCADA.
The Utility is kept abreast of local, regional and national security issues via weekly situation
reports provided by Water Information Sharing and Analysis Center (Water ISAC). The
target date for completion of security measures and/or policies defined in the VA is estimated
for FY 2008-09.
ICAPITAL IMPROVEMENTS
1 Potable Water System:
J This past year the Utility completed the design and construction for a production well, two
reservoirs, one booster pump station and approximately 4,000 feet of new water mains. The
projects are identified in the Potable Water System Master Plan adopted by Mayor and
Council August 2006. They are designed to improve existing facilities and help the Utility
keep pace with increased demands due to continual growth within the Town.
El Conquistador "C-D" Zone Booster Pump Redesign: The facility is located at the
Hilton Hotel near Oracle Road north of El Conquistador Way. The facility operates as a
1 -17-
transfer pump station, boosting water from a lower pressure zone to a higher zone. The
n system provides service to the Hilton Hotel, residential units and commercial development
lalong the Oracle Road corridor.
n
The existing facility has been in operation since the early 1980's. The completed redesign
l 1
replaces the older facility with a new pump station sized to meet increasing demands from
continued development of the service area. Construction is expected to start in FY 2007-08.
Oro Valley Drive Main Extension: This project installed over 3,000 linear feet of 8-inch
water main in the Oro Valley Country Club area. Also, the Utility installed over 4,200 linear
n
feet of private water service and 5 fire hydrants. The new mains will replace a water system
l
comprised of 2-inch and 4-inch pipelines which were in poor condition and in need of
continual repair. This project will significantly improve water service reliability and provide
fire flow in this area. Completion is expected in June 2007.
Pusch View Lane Well C-9: The new well is located behind the Rock Ridge Apartments
east of the Pusch View Lane Bridge. It was drilled to a depth of 800 feet and includes a 14-
inch steel casing to full well depth. The well pump installation, associated equipment and
site facility are expected to be completed and online September 2007. It will produce 800
rj
gallons per minute (GPM) and increase water supply in "C" zone west of Oracle Road. This
J
will be the first well facility with an onsite hypochlorite (disinfection) generation system.
Due to the location of the well relative to surrounding apartment building and homes, the
Utility's design included a sound abatement enclosure around the pump and motor to
mitigate noise from the well.
I
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Drilling Well C-9
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Highlands Main Replacement: This project is located in the Highlands Mobile Home Park
on Lambert Lane. The design includes the installation of approximately 16,000 linear feet of
8-inch, 6-inch and 4-inch mains within existing private right-of-way. Also included is the
relocation of 250 existing water mains from the back side to front curb of the lot. Fire
hydrants will be installed every 500 feet to provide fire protection. The engineering design
will be completed by September 2007.
North La Canada "E" Zone Reservoir Design: The reservoir site is located in the vicinity
of Moore Road and King Air. The design is a 2.2 million gallon (MG) concrete in -ground
n reservoir. The design will include provisions for a future booster pump station in preparation
IL JI of providing service to areas west and north of the site. Another feature includes the
capability to expand the reservoir for future potable CAP water. The reservoir is located and
7 will operate as a floating (gravity) "E" zone pressure which is the largest zone in the Utility's
operating system. Design will be complete by September 2007.
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Pusch Ridge Reservoir: The site is located in the La Reserve subdivision. This is a
500,000 gallon in -ground concrete reservoir and associated pumping equipment. The Town
entered into a purchase/development agreement with the developer of the subdivision to
increase the size of the water facility from a 200,000 gallon water reservoir and booster
station to a 500,000 gallon reservoir and booster station. Construction is expected to be
completed by June 2007.
Pasch Ridge Reservoir
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Water Plant 15 Reservoir: The facility is located in Rancho Vistoso, Stone Canyon II. The
500,000-gallon steel above -ground reservoir is located and operates as a floating "H" zone
system. Approximately 70 percent of the facility is screened by native rock outcroppings.
This reservoir will benefit existing customers with an increase in service reliability, fire flow
capabilities, provide operational flexibility, and reduce cycle time for wells resulting in fewer
pressure fluctuations and add reliability during power outages. Construction is expected to
be completed by September 2007.
The potable water capital improvement projects planned for FY 2007-08 include completing
the equipment installation for well C-9 on Pusch View Lane, design and modification of the
electrical system of two wells, completing design for the 2.2 MG reservoir near King Air and
Moore Road, installation of the 8-inch main and private services lines for the Highlands
project and modification of a 16-inch "E" zone main north and south of Tangerine Road near
the Oro Valley Northwest Hospital and Big Wash.
Construction cost increases in the past 12 months have stabilized from the rapid increase of
the prior 18 months. However, we still expect to see a 4% to 6% cost increase in FY 2007-
08.
Five Year Capital Improvement Program:
The following table summarizes the Utility's proposed five year Capital Improvement
Program (CIP). A detailed schedule of the capital improvements program may be found in
Appendix D.
5 Year
C.I.P.
FY 07/08
FY 08/09
FY 09/10
FY 10/11
FY 11/12
Total
Existing
System
$ 4,050,000
$ 4,750,000
$ 3,155,000
$ 2,250,000
$ 520,000
$ 14,725,000
Expansion
Related
$ 1,570,000
$ 750,000
$ 6,950,000
$ 2,100,000
$ 0
$ 11,370,000
Reclaimed
System
$ 5,650,000
$ 0
$ 0
$ 0
$ 0
$ 5,650,000
Total
$11,270,000
$ 5,500,000
$10,105,000
$ 4,350,000
$ 520,000
$ 31,745,000
The capital projects for existing system improvements will be financed with cash reserves. It
is proposed that the remaining projects in future years will be financed with proceeds from a
bond issue in FY 2008-09. Expansion related improvements will be financed in FY 2007-08
and FY 2008-09 with remaining Series 2003 bond proceeds. It has been assumed that the
remaining expansion related capital projects with be financed with cash generated from the
Potable Water System Development Impact Fees. The projects identified in FY 2010-11 and
FY 2011-12 will need to be financed. It is proposed that the reclaimed water system will be
financed with cash reserves in FY 2007-08. The cash reserves will be repaid during the FY
2007-08 when financing is received.
Reclaimed Water System:
In calendar year 2006, Phase 1 of the reclaimed water delivered approximately 488 million
gallons or 1,500 acre feet of reclaimed water to the three golf courses north of Tangerine
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Road. Currently, Phase 2 of the reclaimed water system is under design and construction
n will be completed in the summer of 2008. When completed, Phase 2 will deliver
approximately 326 million gallons of reclaimed water to the two existing Hilton golf courses
on La Canada Drive south of Tangerine Road and to the elementary school on Woodbume
Avenue south of Moore Road.
The "in -line" booster station that will help increase the supply of reclaimed water to the
n Town of Oro Valley was completed in the summer of 2006. The Town of Oro Valley was
J responsible for 50% of the cost. This booster station is very important to the Town's
reclaimed water system because it will ensure that the Town can receive the entire 3.75 MGD
commitment by Tucson Water during peak demand periods.
A map of Phase 2 may be found in Appendix E. Alternative Water Resource Development
7 Impact Fees and Groundwater Preservation Fees are used to repay debt incurred to finance
the construction of these projects.
IFINANCIAL HIGHLIGHTS
The Utility's operating revenue consists of potable and reclaimed water sales, groundwater
preservation fees, miscellaneous service fees and charges and interest income. The following
table contains the actual revenue received for FY 2005-06 for all funds within the Utility:
Revenue Source
Amount Received
Potable Water Sales:
Residential
$
6,725,552
Commercial
$
572,743
Irrigation
$
851,442
Turf
$
847,339
Construction
$
340,388
Reclaimed Water Sales:
Turf
$
635,372
Groundwater Preservation Fees
$
641,544
Misc. Service Fees & Charges
$
489,180
Interest Income
$
758,879
Potable Water Development Impact Fees
$
1,838,526
Alternative Water Resource Impact Fees
$
246,737
Total for FY 2005-06
$13,947,702
The Water Utility increased water rates by 5% and the Groundwater Preservation Fees by
$0.04 for potable water customers in FY 2006-07. The Utility used Cash Reserves to finance
the existing system capital projects in FY 2006-07.
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The budgeted expenditures are compared to the actual expenditures for FY 2005-06 in the
following table:
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Expenditures
Budget
FY 2005-06
Actual Spent
FY 2005-06
Difference
Under Over
Personnel
$ 1,902,477
$ 1,807,734
$ 94,743
O&M
$ 3,693,248
$ 3,418,401
$ 274,847
Capital
$ 8,574,805
$ 6,297,117
$2,277,688
Debt Service
$ 4,795,587
$ 5,295,550
($ 499,963)
Totals
$18,966,117
$16,818,802
$2,147,315
With the exception of the capital expenditures, the Utility's actual expenditures were less
than one percent under the budgeted costs. The capital expenditures were under budget as a
result of delays in construction of potable water projects.
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WATER RATES ANALYSIS
7 The functions and duties of the Commission include reviewing and developing
recommendations for water revenue requirements, water rates and fee structures. The
1 Commission annually evaluates staff recommendations based on a water rates analysis to
J assure the recommendations meet Town policies and bond covenants.
1 The Utility based its financial analysis on the American Water Works Association (AWWA)
J Cash Needs Approach. The AWWA is the largest national organization that develops water
and wastewater policies, specifications and rate setting guidelines accepted by both
government -owned and private water and wastewater utilities worldwide.
The Water Rates Analysis Report contains detailed information on the three funds that
J comprise the Oro Valley Water Utility:
• The Enterprise Fund
• The Alternative Water Resource Development Impact Fee Fund
• The Potable Water System Development Impact Fee Fund
Each fund is individually analyzed with regard to revenue and revenue requirements. The
Preferred Financial Scenario includes five year projections for each fund. This allows the
Utility to evaluate the impact of future costs and the revenue sources that will be required to
meet those costs. Based on a detailed Water Rates Analysis Report and the Preferred
Financial Scenario, the Commission has made recommendations on water rates, impact fees
and other service fees that the Utility assesses. The Water Rates Analysis Report will be
provided to the Town Council on June 6, 2007 as part of the Town's Notice of Intent to
Increase Water Rates as required by Arizona Statutes.
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CONCLUSION
l The Commission presents this annual report for review and consideration by the Mayor and
Council. The Commission is available to discuss this report in greater detail at a joint study
session or other appropriate forum. The Oro Valley Water Utility Commission is proud to
serve the Town of Oro Valley, its citizens and the customers of its Water Utility. Much has
been accomplished in the ninth year of the Utility's operation. The Water Utility
n Commission and Utility Staff extend their appreciation to the Mayor and Council for their
J consideration and guidance and look forward to their continued direction on issues discussed
in this report.
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APPENDIX A
WATER QUALITY
A-1 Water Quality Testing Results
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A-2
APPENDIX B
CURRENT WATER SUPPLY
B-1 Static Water Level Measurements
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APPENDIX C
0
0 WATER CONSERVATION PROGRAM
L
I
J
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l
J
C-1 Map: Theoretical Specific Capacities — 2003
C-2 Map: Theoretical Specific Capacities — 2005
C-3 Map: Big Wash Multi -Use Pilot Project
C-4 I.C.A.R.E. — Conservation Programs
J
EM
B R 0 N N
F
I
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EXPLANATION
'+ Town of Oro Valley Water Utility N9lla
Well Study Area
iOro Valley Parcels
KBedrock Out.pAreas
Theoretical Specific Capacity
< 5 gpm/ft
> 5 and < 10 gpmlX
> 1 o gpmlX
Mite
0 a.3 1 3 0
PLATE 11
THEORETICAL
SPECIFIC CAPACITIES-2005
2006 - GROUNDWATER ACTION PLAN
ORO VALLEY WATER UTILITY
ORO VALLEY, ARIZONA
C-2
u00 300 Feet ,
J May 14. 3007
LSIORON 6ARRIEJR
-- -
O R O( V A L L E Y
BIG WASH PILOT;
STUDYAREA
N C-3
PROJECT
AREA I
F
CONSERVATION PROGRAMS
I. C.A.R.E.
n Incentives
J Currently the Utility has only one formal incentive program available and that is the rain
sensor program. To date over 1,000 rain sensors have been sold and demand continues to
be steady. In an effort to better serve the customers, a Rain Sensor Installation Guide is
currently being developed. It is anticipated that the guide will be ready for distribution in
June 2007. Informally, the Utility has what is termed as implied incentives consisting of
n permit fee waivers from other departments for alternative water source installations. Such
l J as rainwater harvesting and graywater installations.
j� Consultations
�J Water Conservation Staff provides input on water management issues with all Town
Departments. Conservation Staff assists in CIP recommendations, converses with staff on
alternatives to current management methodologies as well as offering suggestions for
utilizing new water efficient equipment. The Conservation Staff readily contributes
expertise on water management issues to homeowner associations, developers, golf
rj courses and residential landscape projects.
Audits
j Audits, for both commercial and residential water customers, continue to be the most
�J active conservation program. For residential customers, audits offer informal one-on-one
question and answer sessions between the property owner and the Town's water
conservation representative. This assistance allows the Conservation Staff to gather data
on Oro Valley's residential water use trends, on the type and efficiency of equipment
being used in landscaping and to gain insight into difficulties confronting the customers.
Staff is able to assess and make recommendations to the homeowner on how to improve
their water management efforts and suggest changes to increase water efficiency in the
home and yard.
JFor commercial properties, including homeowner associations, Conservation Staff
assesses water use trends and irrigation equipment to identify where significant losses are
1 occurring. Staff also consults with their landscape service providers to determine
J whether they are using best management practices for the property. As of this report and
the inception of this program in 2003, the Utility has completed over 800 residential
Jaudits and 18 commercial audits.
Research
Partnerships with manufacturers, organizations and professionals in the water
management industry continue to be an ongoing enterprise of the water conservation
program. Currently the Utility tests new apparatus and equipment developed for use in
landscape irrigation as well as cooperate by providing data for research studies being
done by others in the field. Viable and practical technologies and methodologies are then
passed on to our customers through education channels, audits, consultations and other
J
I C-4
J
' means which may be helpful to incorporate those methods for use by Oro Valley
residents.
Education
Educational efforts for Town residents have grown significantly. Staff continues to
publish the bi-monthly newsletter, as well as maintain literature displays at both the
Town library and Utility office. Another important element of education is public
n speaking engagements and Town sponsored classes. The Water Conservation Specialist
l J has made presentations to service organizations including the local Rotary, Optimists,
Kiwanis, Welcome Wagon, and Civitan clubs; the Southern Arizona Homebuilders
Association; local homeowner associations as well as individual departments within the
Town.
r� The Utility maintains membership in professional organizations as a means of keeping
U! abreast of current technology and providing up to date training for staff. The Utility
maintains memberships with the American Water Works Association, the Irrigation
Association and the Water Conservation Alliance of Southern Arizona (Water CASA).
Projects are being designed to broaden educational opportunities for customers and water
management skills of landscape/irrigation service providers. This year, the Utility hosted
two professional level classes on irrigation design with additional classes being
considered for the coming year. Plans are underway to offer classes to residents strictly
dealing with the maintenance, operation, and management of drip irrigation systems and
how to manage water use on their property. Another class being developed will be a
certification course for landscape/irrigation service providers. This course will offer
more specialized and technical information for professionals as well as address Oro
Valley Town Codes.
C-5
APPENDIX D
5-YEAR CAPITAL IMPROVEMENT PROGRAM
D-1 Existing Potable System Improvements
D-3 Expansion Related Potable System Improvements
D-4 Reclaimed Water System Improvements
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APPENDIX E
I RECLAIMED WATER SYSTEM PHASE 2
E-1 Map: Reclaimed Water System Phase 2
PHASE 2 RECLAIMED WATER SYSTEM
Exist. 24" Reclaimed Water Line
r NEW 6"Reclaimed
E Water Line '
' Painted Sky Elementary
ANEW24'Exist. 24' ReclaimedWaterLine -
HILTON NORTH
GOLF COURSE
NEW 16"
Reclaimed
Water Line
HILTON SOUTH
- -' GOLF COURSE
\ r yv
V 01112/2008
Created by C. Swanson
E-1
P
F
p
I
LI
I
I
I
I
I
APPENDIX F
UTILITY STATISTICS
Oro Valley Water Utility
Statistics Comparison for Calendar Years 2004 - 2005 - 2006
Potable Water Deliveries in Gallons
11....
3,500,000,000
3,000,000,000
2,500,000,000
2,000,000,000
1,500,000,000
1,000,000,000 �-
500,000,000
2004 2005 2006
Bluestakes
6,000
5,000
4,000-
3,000 i —
2,000
1,000
2004 2005 2006
F-1
Customer Contacts - Customer Service
50,000 —39-.597___--44-B44------ 44-}42— .
40,000
30,000
20,000
10,000
2004 2005 2006
I
J
Accounts By User Type
As of December 31, 2006
16,616 ■ Construction - 2%0
Gallons Sold By User Type
January - December 2006
253,876,000
1,959,225,000 "- 487,702,000
331,926,000
58,730,000
L 145,043,000
Revenue By User Type
January - December 2006
F$656,754
$944,076 $1,016,910 $322,846
$593,367
$7,166,052
F-2
■ Construction - 2%
❑ Commercial - 4%
■ Residential - 61 %
D Irrigation - 8%
❑ Reclaimed - 15%
■Turf - 10%
■ Construction - 3%
❑ Commercial - 5%
■ Residential - 67%
El Irrigation - 9%
❑ Reclaimed - 10%
®Turf - 6%