HomeMy WebLinkAboutAnnual Reports - 4/1/2006Town of Oro Valley
Water Utility Commission
2006 Annual Report
Water Sustainability
Our Future Depends On It
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TOWN OF ORO VALLEY
WATER UTILITY COMMISSION
ANNUAL REPORT
APRIL 2006
1 T1x1r 1 M0obl rlel'A za1T+I. 6M
Paul Loomis, Mayor
Terry Parish, Vice Mayor
Paula Abbott, Council Member
K.C. Carter, Council Member
Connie Culver, Council Member
Helen Dankwerth, Council Member
Barry Gillaspie, Council Member
ORO VALLEY WATER UTILITY COMMISSION
Michael Caporaso, Chair
Gregg Forszt, Vice Chair
Kelle Maslyn, Member
Drue Hardy, Member
Dave Powell, Member
Harold Vaubel, Member
Winston Tustison, Member
TOWN STAFF
Chuck Sweet, 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
Iris Chaparro Carolyn Schneider Jeff Kane
TABLE OF CONTENTS
TOWN OF ORO VALLEY
WATER UTILITY COMMISSION
ANNUAL REPORT
APRIL 2006
SECTION TITLE PAGE
List of Acronyms
i
Index of Appendices
ii
Executive Summary
1
Introduction
4
Water Quality
4
Current Water Supply
7
Water Resource Planning
8
Conservation
11
Utility Operations
14
Security
15
Capital Improvements
16
Financial Highlights
19
Water Rates Analysis
20
Conclusion
21
Appendices
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
AWS
Assured Water Supply
BCP
Business Continuity Plan
CAGRD
Central Arizona Groundwater Replenishment District
CAP
Central Arizona Project
CIP
Capital Improvement Program
COLA
Cost of Living Allowance
CY
Calendar Year
ECOBA
Evaluation and Cost Benefit Analysis
EPA
Environmental Protection Agency
ERP
Emergency Response Plan
FY
Fiscal Year
GAP
Groundwater Action Plan
GIS
Geographic Information System
GPCD
Gallons Per Capita Per Day
GPM
Gallons Per Minute
IOC
Inorganic Compound
ISAC
Information Sharing & Analysis Center
MCL
Maximum Contaminate Level
O&M
Operations & Maintenance
OVWU
Oro Valley Water Utility
pCi/L
Picocuries Per Liter
POE
Point Of Entry
ppb
Parts Per Billion
ppm
Part Per Million
SAWUA
Southern Arizona Water Users Association
SOC
Synthetic Organic Compound
SSF/RO
Slow Sand Filtration / Reverse Osmosis
TCE
Trichloreoethylene
TTHM
Total Trihalomethanes
VA
Vulnerability Assessment
VOC
Volatile Organic Compound
Water CASA
Water Conservation Alliance of Southern Arizona
WOW
Water on the Web
INDEX OF APPENDICES
APPENDIX
A. Water Quality
1) Water Quality Testing Results
B. Current Water Supply
1) Static Water Level Measurements
C. Utility Statistics for Calendar Year 2005
D. 5-Year Capital Improvement Program
1) Existing Potable System Improvements
2) Expansion Related Improvements
3) Reclaimed Water System Improvements
E. Reclaimed Water System
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EXECUTIVE SUMMARY
TOWN OF ORO VALLEY
WATER UTILITY COMMISSION
ANNUAL REPORT
APRIL 2006
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 eighth
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 2006-07 and beyond. Explanations that are more detailed may be
found in the report and the appendices.
WATER QUALITY
For the fourth consecutive year, the Utility is proud to report that it did not experience any
water quality violations for Total Coliform bacteria. The number of samples taken in 2005
was 1,630 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
diligent 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 already begun to slow
the groundwater decline, thus preserving the potable water supply. The use of reclaimed
water is 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.
The Utility is in the process of renewing an agreement to continue to provide Kai Farms with
1 Central Arizona Project (CAP) water for 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 Replenishment District (CAGRD).
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Participation in the Lower Santa Cruz River Managed Recharge Project also provides the
Utility with long term storage credits. The use of CAP water for direct use by the Town may
be deemed necessary sooner than previously projected. The Utility is currently working with
other water providers in the region to evaluate 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. The Utility is also working with regional
water providers to evaluate the possibility of forming a cooperative regional water supply
organization. This organization would provide a regional voice for its participants regarding
Colorado River issues and CAP water as well as other state water issues.
RECLAIMED WATER SYSTEM
Phase 1 of the reclaimed water system began delivering reclaimed water to the Sun City Golf
Course in October 2005. By the middle of November 2005, Stone Canyon and Vistoso
Highlands Golf Courses were also receiving reclaimed water. The Town celebrated the
completion of the reclaimed water system with a ribbon cutting ceremony on November
18th. During the first 3 1/2 months of operation, the Utility delivered approximately 85
million gallons of reclaimed water which represents a direct savings of potable groundwater
supplies. This system will be a significant benefit to the availability of the potable water
supply and the community as a whole. Design of Phase 2 of the reclaimed water system will
begin in the spring with construction to follow. It is anticipated that Phase 2 will be
completed and begin delivering reclaimed water to Painted Sky Elementary School and the
two 18-hole golf courses on La Canada Drive by July 2007.
CONSERVATION
The Water Conservation Program is proving to be a viable asset in assisting the Utility to
achieve its overall water management goals. During this past year, the primary focus of the
conservation program has been on residential water use audits. Analysis of water use for
customers receiving audits in 2003 and 2004 indicates a total reduction of over seven million
gallons of water. The Utility will continue working toward possible code changes related to
graywater, rain water harvesting, and point of service hot water recirculation systems.
The functions and duties of the Commission include reviewing and developing
recommendations for water revenue requirements, water rates and fee structures. This year,
those recommendations will be provided in a separate report. The Water Rates Analysis
Report will be submitted to the Town Council at the April 5, 2006 Council Meeting.
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CONCLUSION
1 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
1 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
direction regarding those items detailed in the Report. We thank the Mayor and Council for
7 their consideration, direction and guidance.
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TOWN OF ORO VALLEY
WATER UTILITY COMMISSION
ANNUAL REPORT
APRIL 2006
WNW11311614in ,
The Oro Valley Water Utility is completing its ninth year of operation. During this time, the
Utility has achieved a number of significant goals. The long standing dispute with the City
of Tucson (Tucson) regarding the northwest water delivery system was resolved. The
products of the resolution include the acquisition of 4,454 acre feet (AF) of CAP water
rights, the right to the effluent water produced within the Town's boundaries, and an
agreement to purchase reclaimed water from Tucson. 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 nine years the Utility's customer
base has increased by over 6,300 connections for a total of 17,282 as of December 2005. The
Utility's infrastructure has grown to meet the demands of the increased population with the
addition of new wells, increased reservoir capacity by 4.2 million gallons, the addition of
numerous pump stations and miles of water main.
The following are some of the Utility's assets and resources as of December 31, 2005:
Assets:
Reservoirs:
18
Reservoir Capacity:
9,088,000 Gals.
Water Mains (miles)
340 +
Pump stations
23
Wells:
21
Well Pumping Capacity
11,182 GPM
WATER QUALITY
Resources:
Employees:
Groundwater Supply
Reclaimed Water:
Effluent Water:
CAP Water:
Long Term Storage Credits:
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13,384 AF/year
1,500 AF/year
1,000 AF/year
6,748 AF/year
19,200 AF
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.
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
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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
l residences within the Oro Valley area. The Utility provides all water quality testing results to
l the Arizona Department of Environmental Quality (ADEQ) and works closely with that
1 agency to ensure all federal and state standards are met.
The Utility's state certified water operators are legally 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 response to any adverse water situation. The Town's water system is in full
compliance with all state and federal regulations.
In 2005, the Utility received 709 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 1.9 to 4.8 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
shorten the life of water using appliances.
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
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.
There are two categories of drinking water standards. A National Primary Drinking Water
Regulation or 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 that can adversely affect public health and are known or anticipated to occur in
water. They take the form of Maximum Contaminant Levels or Treatment Techniques. A
National Secondary Drinking Water Regulation or secondary standard is a non -enforceable
guideline regarding contaminants that may cause cosmetic effects (such as skin or tooth
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.
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However, the ADEQ requires the Utility to sample these contaminants every three years. A
contaminant list and the most recent analysis for the Utility are included in Appendix A.
It is important to remember that the detection of a contaminant in drinking water does not
necessarily represent a threat to public health. Current technology allows water utilities to
detect extremely low levels of contaminants in drinking water. All drinking water, including
bottled water, may reasonably be expected to contain at least small amounts of some
contaminants. 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,
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.
Other 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
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 four years, the Utility has collected
1,905 samples for analysis of Total Coliform bacteria; none of which resulted in a detection.
This is a direct result of a successful disinfection program and proficient sampling methods.
Two inorganic compounds found in groundwater are presently of special interest. These
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.
As of January 2006, all water systems need to comply with the EPA's new Maximum
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
standard presently exceed the 10 ppb standard. In 2004, the Utility conducted compliance
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. Fluoride at a level of 1.0 ppm has been shown
to help prevent tooth decay. In highconcentrations, fluoride can be harmful. Oro Valley's
groundwater has fluoride at low concentrations ranging from 0.15 to 1.0 ppm.
Water regulations do not stagnate, but continue to evolve in complexity and cost. In early
2006, EPA released the STAGE 2 Disinfectants and Disinfection By -Products Rule. This is
an important 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 new Ground Water Rule, scheduled for mid-2006, is expected to require many
small groundwater systems to add disinfection to their systems. The Utility's disinfection
program was implemented for both systems in 2002. EPA's proposed rule revisions to Lead
and Copper should also be published early 2006. It will be a targeted update of the current
rule including guidance on lead in drinking water in schools, including information on
improved testing, monitoring and maintenance efforts.
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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
cost, requiring the support needed to ensure regulatory compliance and the safety of the
drinking water system.
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CURRENT WATER SUPPLY
Developed Water Resources
• Groundwater: 13,384 acre feet per year
• Reclaimed water: 1,500 acre feet per year
The Town of Oro Valley has a groundwater supply of 13,384 acre feet (AF) per year based
on the Arizona Department of Water Resources (ADWR) Designation of Assured Water
Supply. A requirement of the Assured Water Supply is that the Town must be a member of
the Central Arizona Groundwater Replenishment District (CAGRD). Each year, the
CAGRD assesses the Town an increasing portion of the annual groundwater pumped at an
increasing rate to replenish what is deemed "excess groundwater withdrawal".
The current well capacity of the potable water system could deliver 11,182 gallons per
minute which is equivalent to 18,037 AF per year. Each year, the Utility measures the
groundwater levels in all of its wells. Static groundwater level measurements taken in
January 2006 indicate an average decline of 5.6 feet for Utility wells located within its
service area during the past year. The decline in individual wells ranged from 0.3 feet to 21.4
feet. Static water levels in two of the wells, Well D-8 and Well E-3, increased by 3.2 feet
and 7.3 feet respectively. Both of these wells were taken out of service in August 2005
which may account for their water level rebounds. Detailed information on the individual
wells and their associated water levels may be found in Appendix B.
Current system demand, coupled with less than average rainfall, over the past years are large
contributors to declining groundwater levels. In fact, it appears that we are currently in the
midst of one of the worst droughts Arizona has seen in a very long time. How severe this
current drought will be and how long it will last cannot be predicted, but even under normal
rainfall conditions it would take many years for the water table to recover to previous levels.
The Town of Oro Valley also has a reclaimed water supply of approximately 1,500 AF per
year. This was acquired in 2003 through an Intergovernmental Agreement (IGA) with
Tucson Water. The IGA contains a complex formula for computing the annual allotment of
effluent produced from the waters of Oro Valley. The Town's effluent is treated at Pima
County Wastewater Facilities and then delivered through Tucson Water's reclaimed water
conveyance system.
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Undeveloped Water Resources
• Central Arizona Project Water: 6,478 acre feet per year
• Effluent Water: 1,000 acre feet per year
• Long Term Storage Credits: 19,211 acre feet
The Town currently has an allocation of Central Arizona Project (CAP) water in the amount
of 6,748 AF per year. At this point in time, the infrastructure necessary to convey CAP water
to the Town does not exist, making direct use impossible.
Currently, the only CAP water the Town utilizes is for recharge pursuant to an agreement
with Kai Farms. The Town has been recharging 2,500 acre feet of CAP water per year and
has accrued long term storage credits of approximately 18,800 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 accrued through
this project are approximately 411 acre feet. The Utility plans to begin using its long term
storage credits to offset the cost of pumping groundwater that is assessed annually by the
CAGRD. The Utility will continue to recharge CAP water until such time the water is
needed for direct delivery.
Included in the Town's Designation of Assured Water Supply is 4,000 AF per year of
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 summer of 2007 and will provide reclaimed
water to Painted Sky Elementary School and the Hilton El Conquistador Golf Courses. It is
estimated that approximately 1,000 AF per year of reclaimed water will be delivered to these
customers. In the future, an additional 1,500 AF per year of effluent will be available to the
Town due to additional growth. This effluent will be used for reclaimed water or for
groundwater storage credits.
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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, a proposed
Conservation 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 supply. Funding for the Water Resource Plan has been
included in the Utility's budget for FY 2006-07.
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n Reclaimed Water
n The second phase of the Reclaimed Water Delivery System is currently in the design stage
n with construction expected to be completed by summer of 2007. The use of reclaimed water
l for turf irrigation will have a beneficial impact on the Utility's ability to meet potable water
n demands during peak use months. The Utility will continue to aggressively look for ways to
!1 expand the customer base of the reclaimed water system for irrigation purposes other than
l turf.
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
indicates the need to continue to add new wells and rehabilitate existing wells long after
implementation of the reclaimed water system. The Utility has been looking at various ways
to modify how and where they pump groundwater in an attempt to mitigate any negative
impacts on the aquifer. The Utility has begun a hydrology study aimed at addressing this
issue. In February 2006, a six inch diameter well was drilled to a depth of 2,000 feet. The
purpose of this project is to explore a deeper aquifer to determine if this lower depth is suited
for long-term groundwater pumpage. From the information obtained, hydrologists can better
predict the response of the aquifer to various pumpage regimes and ultimately recommend a
prudent course of action relative to the location, design and construction of new wells within
the Utility's service area.
CAP Water
In addition to the existing allocation, the Town anticipates acquiring a portion of the
unallocated Municipal and Industrial CAP water as part of the reallocation process conducted
by the State. ADWR has recommended that the Town of Oro Valley be allocated an
additional 3,557 AF per year out of approximately 60,000 AF per year available through this
process. CAP administrative staff has informed the Utility that the reallocation process is
expected to be completed in the summer of 2007.
J CAP Water Delivery System
The Town has been cooperating with other local water providers and the United States
J Bureau of Reclamation (Reclamation) to develop a regional CAP water delivery system
3 within the northwest Tucson area. To date, a conceptual plan for the direct delivery of CAP
J water to customers in the northwest area has been developed and various treatment methods
J have been researched and investigated. In concept, the northwest water providers would
construct a turnout for CAP water in the vicinity of Tangerine Road and Interstate 10, a
reliability 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. The preliminary cost estimate of this system is approximately
210 million dollars which would be split among the four participating water providers. The
costs for this project will be further developed during FY 2006-07. Oro Valley's share of
this project is estimated to be 70 million dollars. Even though this is an extremely complex
project and will likely take a number of years to accomplish, the Town of Oro Valley is
committed to the direct use of CAP water and will continue to work with our partners to see
that this concept becomes a reality.
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n CAP Water Pilot Project
The Town of Oro Valley, along with other regional water providers, has requested assistance
n from the Bureau of Reclamation and the University of Arizona to investigate water quality
n and salinity issues related to the direct delivery of CAP water. In addition to Oro Valley, the
n participants in this study include the Town of Marana, Tucson Water, Metropolitan Domestic
n Water Improvement District and Flowing Wells Irrigation District. In a previous pilot study
n sponsored by the Bureau of Reclamation and completed in 2002, slow sand filtration and
n reverse osmosis (SSF/RO) were shown to be an effective means of treatment for CAP water
and would cost an estimated 25% of the cost for other treatment methods. 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.
Additionally, this study will be conducted in a completely coordinated and cooperative effort
with the existing SSF/RO study in Yuma, Arizona. The regional water providers support that
effort and are committed to using the positive results of the Yuma study as a starting point in
the evaluations. The use of halophyte (salt tolerant plants) irrigation will be investigated as a
concentrate disposal option in this study.
Cooperative Regional Water Supply Organization
Oro Valley Water Utility is a member of the Southern Arizona Water Users Association
(SAWUA). SAWUA is group of municipal and agricultural water providers that meet
regularly to discuss local, state and federal water matters. Members of SAWUA have
recently developed a proposal for a plan to develop a Cooperative Regional Water Supply
Organization that would be a voluntary, non-profit organization created to obtain, manage
and use renewable water supplies. This organization would include participation from
municipal providers that currently have CAP water allocations or are interested in acquiring
additional CAP water or other available supplies such as effluent or reclaimed water. As the
southern Arizona region grows, even pending reallocations of CAP water will not be
sufficient to meet future demands which could result in increased competition for water
supplies. SAWUA is proposing that the regional water providers work together to secure our
water future. The primary objectives for the organization include: obtaining additional
supplies of renewable water, facilitate optimal use of the resources and future project
development to meet these objectives. Additionally, the organization would provide for
regional representation of members on issues pertaining to renewable water resources as well
as water issues related to the Colorado River and CAP water. Details on this proposed
organization will be presented to each member's governing body to determine support for the
organization prior to moving forward with establishing it.
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.
The Utility's water conservation program is discussed in detail below.
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WATER CONSERVATION PROGRAM
Oro Valley, like most of southern Arizona, continues to endure a prolonged drought. It is
therefore even more incumbent upon the Town, the Utility and its customers to embrace
water conservation strategies as an integral part of the overall water management plan of our
community. As such, the Water Utility Commission and Utility Staff continue their efforts to
build upon the foundations of responsible water management for this community that began
three years ago.
The Utility's conservation program continues in its comprehensive approach to broaden
community awareness, develop inter -departmental partnerships, educate staff and customers,
perform and participate in research programs and provide the Town with the most up-to-date
and practical water conservation program possible. To do this we embrace these five
concepts: incentives, consultations, audits, research and education.
Incentives:
At this time, the rain sensor program is the only formal incentive within the conservation
program. The Utility has sold approximately 700 rain sensors. While customer interest in
the program continues, the Utility has learned that some customers are reluctant to purchase
the sensor because of their inability to install them properly. Participation in the rain sensor
installation classes has fallen. Staff has observed that many of the sensors purchased have
not been installed or were installed improperly. The Utility received customer comments that
their rain sensors did not work. Those comments were investigated and the mechanical
problems were due to improper installation. Residents in Oro Valley who have properly
installed rain sensors are not experiencing any discontent with them. Rain sensors are a
proven, practical and viable water management tool. In a number of states including,
California, Oregon, Washington, Illinois and Minnesota, rain sensors are required to be
installed on all irrigation systems.
Informally, there are implied incentives consisting of permit fee waivers from other Town
departments for alternative water source installations. Staff is in the process of researching
other municipalities in Arizona for potential code changes regarding graywater usage and hot
water recirculation system installations for our customers.
Consultations:
The Water Conservation Specialist readily provides information and expertise on water
management issues for homeowner associations, developers, golf courses and residential
landscape projects. Assistance is also offered on household water management.
Additionally, the Conservation Specialist works with Planning and Zoning, Parks and
Recreation, and Public Works on a variety of issues including: median design for streets,
water management techniques for Town -managed irrigation systems, code modifications and
storm water mitigation techniques that utilize rainwater detention and passive water
harvesting.
A number of new street projects have been completed in Oro Valley. Along the right-of-
ways and in the medians, irrigation systems have been installed to accommodate the
landscaping. Some of these projects included state-of-the-art central irrigation controller
adaptable equipment. Equipment installations were performed with access to
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n communications wiring for eventual connection to a central computer. These systems are
n capable of handling thousands of valves or zones. One central computer system has already
been installed at River Front Park although it has not yet been activated. The Public Works
Department has requested assistance from Utility Staff to assess the feasibility of connecting
1 Town -owned irrigation systems to a centralized control unit and the cost to implement it.
The Public Works Department is also requesting assistance with establishing and
implementing irrigation specifications for Town projects.
Water Audits:
Water audits are perhaps the strongest aspect of the Town's conservation program. For both
residential and commercial customers, they offer informal one-on-one question and answer
sessions between the property owner and the Town's Water Conservation Representative.
These sessions allow the customer to ask questions freely about their individual water use
needs, problems and concerns, as well as getting hands-on education about irrigation
systems, consumption habits and any adjustments needed to use water more efficiently. Staff
is able to gather data on Oro Valley's residential water use trends, on the type and efficiency
of equipment being used in the landscape and gain insight into common difficulties
confronting the residents. Based on this information, staff is able to assess individual needs
and make recommendations based upon observations made for that specific residence.
As a result of the water audit program, the Utility is beginning to accumulate significant data
on water use trends, equipment, backfiow prevention and much more. During 2003 and
2004, the Utility conducted 214 residential audits for which there is at least one full year of
water use data to examine. The total water savings, based on historical water use prior to the
date of audit, was 7.7 million gallons. The 81 residential audits performed in 2003 showed
an average annual savings per customer of 33,100 gallons in the first year and 30,770 gallons
in the second year following their audit. The 133 residential audits performed in 2004
yielded a first year average saving of 19,015 gallons per residence. This data indicates that
most of the Utility customers are practicing better management strategies provided to them at
the time of their audit.
Staff is also accumulating data on commercial properties and homeowner associations. To
date, the Utility has performed audits on 13 homeowner associations. Eleven of these had
more than one year of data that was evaluated. The results were a collective savings of 3.7
million gallons of water and an average decrease in annual water use of 20 percent.
Research:
The Utility continues its endeavors to partner with manufacturers, organizations and
professionals in the water management industry. Viable and practical technologies and
methodologies are then passed on to customers through education channels, water audits,
consultations and public information.
The Utility is currently testing two "Smart Controllers" that have been installed at Town Hall
and James Kreigh Park. These controllers utilize pager technology to receive real-time
information gathered from weather stations in our area on evapotranspiration rates,
-12-
temperature and rainfall. The controller downloads the information received and makes
adjustments to programmed irrigation schedules accordingly.
In cooperation with the Public Works Department, the Utility is evaluating a new design for
street medians that would detain storm water flows in the medians to augment irrigation of
landscaping within those medians.
The Big Wash Multi -use Pilot Recharge Project continues to progress. The partnership with
the Storm Water Utility has resulted in a commitment for funding by Pima County Flood
Control to assist in the development of the project. A joint proposal with the Storm Water
Utility will be forthcoming later this year. It is hoped that permission will be obtained from
the Arizona Public Land Trust to use trust land for the initial pilot study.
Utility Staff also participated with the Water Conservation Alliance of Southern Arizona
(Water CASA) and the University of Arizona in the Evaluation and Cost Benefit Analysis of
Municipal Water Conservation Programs Study (ECOBA). This study was a unique
undertaking to identify conservation programs utilized by a variety of water providers and
evaluated their costs and relative effectiveness. The study was completed last year and the
results have been published. A copy of the ECOBA study may be purchased from Water
CASA for ten dollars.
Education:
The Utility continues to publish the bi-monthly newsletter, Oro Valley Water Ways, as well
as maintain the literature displays at both the Utility office and the library. Other important
elements of education are public speaking engagements and Town -offered classes. The
Water Conservation Specialist has had speaking engagements with local service
organizations including Rotary, Optimists, Kiwanis and Civitan clubs; the Southern Arizona
Homebuilders Association; the Citizen's Planning Institute, homeowner associations and
individual departments within the Town. The Water Conservation Specialist has also
contributed water management related articles to local news publications. The Utility plans
to broaden the scope of the water conservation web site to allow for more interactive
participation by its customers.
The Utility has maintained its memberships with the American Water Works Association,
The Irrigation Association, American Rainwater Catchments Systems Association and the
Water CASA. Participation in these organizations is important for keeping abreast of
changes in technology and for relevant training opportunities for Staff as well as sharing
information on practices and applications of new technologies.
Alternative Water Resources
J The first phase of the Town's Reclaimed Water System began delivering reclaimed water to
the golf courses north of Tangerine Road in October 2005. The second phase is expected to
serve turf facilities south of Tangerine Road as well as an elementary school by summer of
2007. The Utility will continue to look for ways to expand the customer base for the use of
reclaimed water beyond turf facilities.
J
13-
J
After two years of successfully implementing this conservation program, the Utility's single
family residential water use has declined. The single family residential water use was 119
gallons per capital per day (GPCD) in 2003 and by the end of 2005 it had dropped to 108
GPCD.
UTILITY OPERATIONS
Production Facilities Division
Utility personnel in the Production Facilities Division are responsible for the operation and
maintenance of 21 wells, 23 pump stations, and 18 reservoirs. The Utility continues to be
proactive in the implementation of maintenance programs and facility upgrades. The
development of an overall preventive maintenance program is on -going. Facility sites are
evaluated annually to determine necessary upgrades to ensure efficient operation of the
facilities. One of the goals for this coming year is to retrofit well level sensing equipment in
each of the production wells to be able to collect monthly data on the aquifer levels of each
well. Monthly monitoring of the aquifer will help the Utility be proactive in identifying well
and or pump problems before they fail. The SCADA system is in a constant state of
improvement to streamline operations and provide critical trending of data. Production
facilities staff is responsible for the installation of security devices at the Utility's facilities as
well as the security program in general.
Due to continuous growth of the Town, the water system continues to grow as well. During
2005 one reservoir, 2 wells and 2 pump stations were added to the potable and reclaimed
water systems. With this additional growth, it is becoming increasingly more difficult to
keep up with the required maintenance programs the Utility is responsible for.
Distribution Facilities Division
Utility personnel in Distribution Facilities Division are responsible for the operation and
maintenance of over 340 miles of water main, approximately 2000 fire hydrants, and
hundreds of valves. The Staff continues to pursue maintenance programs that keep the
distribution system functioning properly and minimize problems that are inherent to water
systems. Data bases have been established for each program that help identify maintenance
cycles and monitor equipment to provide for proactive replacement programs.
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 implement a Geographic Information System (GIS)
program that is expected to be completed later this year. Maps that have been created using
GIS are already providing benefits to Utility staff. When completed, the GIS program will
have a significant impact on operations of the Water Utility. The improved analytical
capability of GIS technology will be used 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
-14-
modeling. Once the GIS program is fully implemented, the dependency on outside
consultants will be reduced which will result in a significant cost savings to the Utility.
Customer Service Division
Customer Service personnel include Customer Service Representatives and Utility Operators.
This Staff is responsible for meter reading, billing and collection for 17,282 customer
connections. They are provided the resources to obtain a variety of training including
handling stress, confrontational customers, security and utility related software. Staying
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.
Last year, the Utility implemented Water on the Web (WOW) 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.
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. This coming year, the Customer
Service Division will be exploring 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.
Utility statistics including new meter installations, customer work orders, and water
deliveries for CY 2005 may be found in Appendix C.
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 ERP will be reviewed
and updated annually to ensure that the most current information is contained therein.
Following 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
to 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.
Utility personnel, with the assistance of a security consultant, continue to review and refine
the security program. A Business Continuity Plan (BCP) is currently being developed that
15-
n
n
will facilitate the ability of the Utility to continue vital administration and business services
in the event of a disaster.
Last year the Utility completed the hydrant lock program. There has been extensive
cooperation with the three fire districts serving Oro Valley Water Utility customers as well as
with other water providers. Additionally, new and/or enhanced fencing has been installed at
all production facilities. Intrusion detection equipment continues to be installed at all
reservoir, booster and well sites and will be completed by the end of January 2007.
The Utility is kept abreast of local, regional and national security issues via Water ISAC
Weekly Situation Reports. The target date for completion of security measures and/or
policies defined in the VA is estimated for FY 2008-09.
CAPITAL IMPROVEMENTS
Potable Water System:
This past year the Utility completed the design and construction of a number of projects.
These projects are part of the Potable Water System Master Plan designed to improve
existing facilities and help the Utility keep up with increased demands due to continual
growth within the Town.
Well C-99: This well is an existing well that was purchased from Tucson. The well is
located within an existing subdivision south of Calle Concordia and west of Oracle Road.
The well had not been used by Tucson Water for over ten years. The Utility equipped the
well to produce 800 gallons per minute (gpm) and will bolster the water supply in the "D"
zone on the south end of Town. Due to the location of the well relative to surrounding
homes, the Utility's design included a sound abatement enclosure around the pump and
motor to mitigate noise from the well.
Well C-99 with sound abatement enclosure
-16-
Shadow Mountain 12-Inch "D" Zone Pipeline: Approximately 5,000 feet of new 12-inch
water main was installed to convey water from Well C-99 along Meadowbrook Drive and
'1 Shadow Mountain Drive to the "D" zone water main located in Calle Concordia.
El Con "D" to "F" Zone Booster: The existing booster station was modified to replace and
upgrade the existing pumps and motors, replace the chain link fence with a block wall, install
sound abatement enclosures and paint the existing reservoir. The upgrades to the pump
station increased the capacity from 1,000 gpm to 2,000 gpm which will now provide fire
flow to the "F" zone in the La Reserve area east of Oracle Road.
Oro Valley Country Club: Over two miles of 8-inch water main was installed in the Oro
Valley Country Club area along with three miles of private water service and fire hydrants.
The new mains will replace a water system comprised of 2-inch and 4-inch pipelines which
were in poor condition and continually breaking. This project will significantly improve
water service and provide fire flow in this area. Completion is expected in May 2006.
Water Plant 15 Reservoir: The design has been completed for a 500,000-gallon reservoir
that will be located in Stone Canyon. The additional storage capacity will provide peak day
demands and fire flow to the "H" zone located in the northern portion of the Town.
Construction on the reservoir is expected to begin in FY 2006-07.
Potable Water System Master Plan/Groundwater Action Plan:
The Utility is currently updating its Potable Water System Master Plan (Master Plan) and the
Groundwater Action Plan (GAP). Both of these planning documents are expected to be
completed by June 2006. The Master Plan will incorporate growth projections, annexations,
service area acquisitions, and implementation of the reclaimed water system. The focus of
the Master Plan will be to evaluate the existing water system, study the projected planning
areas, determine the infrastructure necessary to meet Town policies and growth -related
demands through build out of the Town, and develop construction costs for the
improvements identified. The GAP will evaluate potential actions that may be performed at
existing well sites to increase pumping capacities to meet future potable water demands and
will provide recommended actions for a 10-year planning horizon. The GAP provides
valuable information for use in the Master Plan.
Exploratory Bore:
J The Utility relies on the Town's local well field to supply potable water from a relatively
J shallow aquifer system. As groundwater levels continue to decline, exploring a deeper
J aquifer has become a viable option in water supply planning. As such, the Utility began an
J exploratory bore analysis to examine the aquifer system at a depth of 2,000 feet below
J ground. The project is located on Pusch View Lane behind the Rockridge Apartments. A
j temporary sound wall was constructed to mitigate noise from the 24/7 drilling process.
J Preliminary results indicate there is not a water source located in the deeper aquifer;
however, this site may be a prime location for a traditional well. A final report on the project
is expected by the end of March 2006.
J Potable water capital improvement projects planned for FY 2006-07 include one new well,
construction of the 500,000 gallon reservoir in Stone Canyon, improvements to an existing
-17-
booster station, assorted valve and fire hydrant replacements, and installation of over three
miles of new water mains. The Utility is also working with a local developer to increase the
size of a planned reservoir to enhance system reliability and fire flow capacity for the service
area east of Oracle Road. The Utility would only be required to pay for the incremental cost
of the additional capacity being requested.
During the past 18 months, the Utility has experienced a significant increase in construction
costs. Costs projected in the 2003 Potable Water System Master Plan have increased by
approximately 40 percent largely due to rising fuel costs and the availability of concrete and
steel. Potable water development impact fees are used to repay debt incurred to finance the
construction of these projects.
Reclaimed Water System:
Phase 1 of the reclaimed water delivery system was completed in October 2005. The three
golf courses north of Tangerine road completed the transition from potable water to
reclaimed water in November. By the end of January 2006, the three golf courses had used
85 million gallons of reclaimed water. Based on historical water usage, it is estimated that
these golf courses will be using over 3 million gallons a day of reclaimed water during the
summer months.
The "in -line" booster station that will help provide our reclaimed water supply is being
constructed by Tucson Water and is expected to be completed by spring of 2006. This
facility is important to the Town's reclaimed water system because it will ensure the Town
can receive the entire 3.75 million gallons per day (MGD) commitment by Tucson Water
during peak demand periods.
Reclaimed water system improvements planned for FY 2006-07 include completion of the
design and construction of Phase 2 of the reclaimed water system. This project will provide
reclaimed water to Painted Sky Elementary School and the two Hilton El Conquistador Golf
Courses on La Canada Drive. Construction of Phase 2 is expected to be completed by July
2007. A map of Phase 2 may be found in Appendix E. Alternative water resource
development impact fees and Groundwater Preservation Fees are used to repay debt incurred
to finance the construction of these projects.
Five Year Capital Improvement Program
The following table summarizes the Utility's proposed five year CIP. A detailed schedule of
the capital improvements program may be found in Appendix D.
5 Year
C.I.P.
FY 06/07
FY 07/08
FY 08/09
FY 09/10
FY 10/11
Total
Existing
System
$ 4,786,600
$ 6,198,912
$ 3,641,600
$1,859,988
$ 1,680,556
$ 17,017,656
Expansion
Related
$ 1,900,000
$ 646,875
$ 992,250
$ 7,667,469
$ 1,093,956
$ 12,300,550
Reclaimed
System
$ 5,410,000
$ 0
$ 0
$ 0
$ 0
$ 5,410,000
Total
$12,096,600
$ 6,845,787
$ 4,633,850
$ 9,527,457
$ 2,774,512
$34,728,206
-18-
The capital projects for existing system improvements and expansion related improvements
in FY 2006-07, FY 2007-08 and FY 2008-09 are proposed to be financed with cash reserves
and remaining Series 2003 bond proceeds. The projects identified in FY 2009-10 and FY
1 2010-11 will need to be financed. It is proposed that the reclaimed water system
l improvements will be financed with cash reserves in FY 2006-07. The cash reserves will be
repaid during FY 2007-08 when financing is received.
FINANCIAL 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 2004-05:
Revenue Source
Amount Received
Potable Water Sales:
Residential
$
6,292,884
Commercial
$
476,911
Irrigation
$
763,623
Turf
$
1,083,740
Construction
$
372,886
Reclaimed Water Sales:
Turf
$
0
Groundwater Preservation Fees
$
543,253
Misc. Service Fees & Charges
$
597,145
Interest Income
$
519,039
Development Impact Fees
$
886,402
Alternative Water Resource Impact Fees
$
147,450
Total for FY 2004-05
$11,683,334
Given the Cash Reserves balance, the Water Utility did not have a rate increase in 2005. As
a result of increased construction costs, the Utility had to use Cash Reserves to provide for
additional financing of some of the capital projects. In the coming fiscal year, the Utility
proposes to specifically identify Cash Reserves as a line item in its budget.
The budgeted expenditures are compared to the actual expenditures for FY 2004-05 in the
following table:
Expenditures
Budget
FY 2004-05
Actual Spent
FY 2004-05
Difference
Under Over
Personnel
$ 1,700,436
$ 1,599,695
$ 100,741
O&M
$ 3,011,620
$ 2,906,279
$ 105,341
$17,080,950
$12,651,938
$4,429,012
-Capital
Debt Service
$ 4,425,494
$ 4,560,948
($ 135,454
Totals
$26,218,500
$21,718,860
$4,499,640
ME
f
f
f'.
With the exception of the capital expenditures, the Utility's actual expenditures were less
f. than one percent under the budgeted costs. The capital expenditures were under budget as a
n result of not completing the reclaimed water system as planned in addition to delays in
r construction of potable water projects.
(1
n Debt service payments have increased significantly since the 2003 Bonds were issued. Debt
n service in FY 2002-03 was $3.3 million and in FY 2004-05 it increased to $4.5 million.
Ca Based on debt amortization schedules prepared by the Town's Bond Underwriters, the debt
service in FY 2006-07 will be $5.1 million. The Utility is proposing to delay additional debt
nby using existing cash reserves and remaining 2003 bond proceeds to finance potable water
n system improvements through FY 2008-09.
WATER RATES ANALYSIS
The functions and duties of the Commission include reviewing and developing
recommendations for water revenue requirements, water rates and fee structures. The
Commission annually evaluates staff recommendations based on a water rates analysis to
assure the recommendations meet Town policies and bond covenants.
This year, the Utility used the American Water Works Association (AWWA) Cash Needs
Approach to financial analysis. 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
comprise the Oro Valley Water Utility:
• The Enterprise Fund
• The Alternative Water Resource Development Fund
• The 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 April 5, 2006 as part of the Town's Notice of Intent to
Increase Water Rates as required by Arizona Statutes.
K11M
APPENDIX A
WATER QUALITY
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APPENDIX C
UTILITY STATISTICS
Utility Statistics for Calendar Year 2005
Customer Contacts 41,014
New Meters Installed 418
Services Established 2,811
Services Terminated 2,823
Service Orders Processed:
Meter re-reads/accuracy
533
Water quality
62
Water pressure
110
Meter replacements
90
Service repairs
123
Leaks
688
Other
245
Total service orders:
1,851
1,851
Total Groundwater Pumped
3,427,685,300 gallons
10,519.18 acre feet
Total Groundwater Delivered (1)
3,195,392,700 gallons
9,806.30 acre feet
Lost & Unaccounted For Groundwater (2)
Total Reclaimed Water Delivered (i)
232,292,600 gallons
712.88 acre feet
6.78 %
59,909,000 gallons
183.85 acre feet
(1) Delivered water is water that has been billed by the Utility.
(2) ADWR allows a maximum of up to 10% to maintain compliance status.
Accounts By User Type
As of December 31, 2005
16,624
■ Construction - 2%
❑Commercial - 1%
■ Residential - 95%
■ Irrigation - 2%
■ Reclaimed - 0%
■Turf - 0%
Gallons Sold By User Type
January - December 2005
227,638,000
1,944,468,000 59,909,000 -
- 782,067,000
`- 94,326,000
139,698,000
Revenue By User Type
January - December 2005
758
$6,955,583
■ Construction - 3%
❑ Commercial - 4%
■ Residential - 60%
® Irrigation - 7%
❑ Reclaimed - 2%
■Turf - 24%
■ Construction - 4%
❑ Commercial - 6%
■ Residential - 70%
■ Irrigation - 8%
■ Reclaimed - 1 %
■Turf - 11%
Customers by Meter Size & User Type
As of December 31, 2005
100%
90%
80%
70%
60%
50%
40%
30%
20%
10%
0% 5/8" 3/4'
o Turf
❑ Construction 171 114
Ill Irrigation 140
❑ Commercial 39
■ Residential 15,691 548
1" 1.5"
2"
3"
4"
6"
1
1
2
2
36 3
32
110 41
71
3
3
60 45
82
7
1
2
278 59
45
2
1
8"
3
APPENDIX D
5-YEAR CAPITAL IMPROVEMENTS PLAN
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41
fn
r
APPENDIX E
RECLAIMED WATER SYSTEM
Town of Oro Valley
Reclaimed Water System
Volume Pumped
December 31, 2005
Maximum Month
32,490,000
Minimum Month
8,440,000
Maximum Day
1,420,000
Days Pumped
30
Minimum Day
286,000
Average Day
1,996,967
Month Vistoso Highlands
Sun City Stone Canyon
Total
January 0
0 0
February 0
0 0
March 0
0 0
April 0
0 0
May 0
0 0
June 0
0 0
July 0
0 0
August 0
0 0
September 0
0 0
October 0
8,440,000 0
8,440,000
November 5,188,000
10,209,000 3,582,000
18,979,000
December 6,450,000
11,213,000 14,827,000
32,490,000
Year Totals: 11,638,000
29,862,000 18,409,000
0
59,909,000
Monthly Water Pumped / Station
�Vistoso Highlands
■Sun City
®Stone Canyon
40,000,000 -----------------._-__-_.-_-----------------------------
39,000,000 --------
38,000,000---
37,000,000--
36,000,000----
35,000,000
--
--
34,000,000
--
33,000,000
- -
32, 000, 000
-------
31,000,000
--
--
30,000,000-
29,000,000
28,000,000
27,000,000
-
26,000,000-_-.-
--
25,000,000_----.--
24,000,000--
---
23,000,000
----
22,000,000
- -. -
------
- _ _.-------
------------
21,000,000
20,000,000
_ _. _.._-----
19,000,000----
----
---------
--
----
18,000,000
-------
-----
17,000,000
-
- -
16,000,000
-
- -- ---
15,000,000
-------
14,000,000
-----
------ ----
13,000,000
—----
- - -
-
- ----------._..
12,000,000
-
-
11,000,000
-------
-----
10,00U00
-------
--
—
9,000,000
8,000,000
-
7,000,000
-------
-------- -------
6,000,000
_.__
5,000,000-
4,000,0003,000,000
2,000,000
--
-
1,000,000_.----
0
1 2 3
4 5 6 7 8
9 10
11 12
r
- T- ;PHASE 2 RECLAIMED WATER SYSTEM
J