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PUBLIC HEARING TO CONSIDER ADOPTION OF THE 2015 URBAN WATER MANAGEMENT PLAN
recommended action
RECOMMENDATION
At the conclusion of the public hearing, it is recommended that the City Council adopt a resolution approving and adopting the 2015 Urban Water Management Plan with any amendments adopted at the hearing and authorizing transmittal to the California Department of Water Resources.
It is further recommended that the City Manager be authorized to take appropriate and necessary actions to carry out the purpose and intent of the Resolution.
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Summary
Urban water suppliers are required by the Urban Water Management Planning Act to update and submit Urban Water Management Plans to the California Department of Water Resources (DWR) every five years. Urban Water Management Plans are prepared by California’s urban water suppliers to support their long-term water resource planning and ensure adequate water supplies are available to meet existing and future water demands. The Urban Water Management Plan is required to assess the reliability of its water sources over a 20-year planning horizon, and report progress on the 20% reduction in per-capita water consumption by the year 2020, as required in the Water Conservation Bill of 2009 SBX7-7. An Urban Water Management Plan is required for a water supplier to be eligible for State water management grants and loans. The plan does not commit the City to additional expenditures, it serves to affirm and track water efficiency and conservation measures, which the City has already instituted.
In addition, the 2015 Urban Water Management Plan (2015 Plan) discusses and documents the latest water supply planning and water conservation information over the past five years, and provides projections for future years. The 2015 Plan considers projected water supplies and demand projections in normal, single dry and multiple dry years, and the City can reliably meet its customers’ water needs now and in the future.
Key changes from the 2010 Urban Water Management Plan include completion of the Delta Water Supply Project, and the passage of emergency conservation regulations that increased the conservation target to 28 percent.
If approved, the City Council’s action will adopt the 2015 Urban Water Management Plan (Exhibit 1 to the Resolution).
A draft copy of the report, including appendices, was made available in the City Clerk’s office on May 20, 2016. The draft report has also been available on the City’s website since May 20, 2016.
DISCUSSION
Background
The Urban Water Management Planning Act at Wat. Code Div. 6, Pt. 2.6, et seq. requires urban water suppliers providing over 3,000 acre-feet of water annually or serving more than 3,000 or more connections, to prepare and submit an Urban Water Management Plan to the DWR every five years. The Act was adopted in 1982 to promote water conservation and efficient water use and has been amended several times since 2000. Urban Water Management Plans are intended to provide a guide to manage urban water demands and the efficient use of water and to provide long-term water resource planning to ensure adequate and reliable water supplies over a 20-year planning horizon considering normal, dry and multiple dry years. Urban water suppliers are required to hold a public hearing (Wat. Code §10642) to provide the public an opportunity to provide input to the Urban Water Management Plan before it is adopted.
On October 13, 2015, the City of Stockton entered into an agreement for Professional Services with Brown and Caldwell Engineering to prepare the City of Stockton’s 2015 Urban Water Management Plan.
Present Situation
With the assistance of Brown and Caldwell Engineering, the City completed preparation of its 2015 Plan in accordance with the requirements of the California Water Code and Urban Water Management Planning Act. The 2015 Plan addresses current regulatory requirements and reflects changes in the City’s water supply and water reliability that occurred since 2010, including the Delta Water Supply Project. Additional recent changes to the Urban Water Management Planning Act require that water suppliers incorporate a description of all water supply projects and programs, including groundwater projects and water quality impacts on water supply reliability.
As required by the Urban Water Management Planning Act, the 2015 Urban Water Management Plan is organized as follows:
• Introduction and Plan Preparation
Requirements, agency coordination and public participation
• Supplier Service Area
Description, climate, demographics
• Water Use Provisions
Current and projected water demand, water use targets
• Water Supply
Current and projected water supply, recycled water
• Water Service Reliability
Supply and demand comparisons, water quality
• Water Demand Management Measures
Summary of water conservation programs
• Water Shortage Contingency Plan
Rationing stages, minimum supplies
The 2015 Plan also reflects recent legislative changes, including passage of the Water Conservation Act of 2009 (Senate Bill X7-7) which calls for a statewide per capita water use reduction of 20 percent by 2020. Senate Bill X7-7 requires water agencies to determine actual water use, a 2015 interim water use target, and a 2020 compliance water use target using one of four methodologies identified by DWR. The City’s 2015 interim water use target and 2020 compliance water use target, using the State’s Method 3, are 172 and 165 gallons per capita per day, respectively. With the City’s actual water use of 130 gallons per capita per day for 2015, the City has achieved the 2015 interim water use target and is on track to meet the 2020 target. The City will continue to evaluate and adjust water conservation measures, identified in the 2015 Urban Water Management Plan to meet the identified 2020 target.
The 2015 Plan discusses and documents the latest water supply planning and water conservation information over the past five years and provides projections for future years. It is a valuable long-range planning document for water supply and is the foundation document for Water Supply Assessments (Senate Bill 610), Written Verifications of Water Supply (Senate Bill 221), and one of many building blocks for an Integrated Regional Water Management Plan in San Joaquin County.
The long-range water supply outlook for a normal year to the year 2040 for the City is described in the following table.
Normal Year Supply and Demand Comparison (acre-feet/year)
|
Water Supply |
2020 |
2025 |
2030 |
2035 |
2040 |
|
Delta Water Treatment Plant |
33,600 |
33,600 |
33,600 |
50,000 |
50,000 |
|
Groundwater |
23,100 |
23,100 |
23,100 |
23,100 |
23,100 |
|
Woodbridge Irrigation District |
6,500 |
13,000 |
13,000 |
13,000 |
13,000 |
|
Stockton East Water District |
6,000 |
6,000 |
6,000 |
6,000 |
6,000 |
|
Supply Total |
69,200 |
75,700 |
75,700 |
92,100 |
92,100 |
|
Demand Total |
35,086 |
37,317 |
39,710 |
42,275 |
45,025 |
|
Supply Minus Demand |
34,114 |
38,383 |
35,990 |
49,825 |
47,075 |
The table demonstrates that for normal water supply years through 2040, the water supply available to the City exceeds the demand by twice as much in most years. The majority of the City’s water supply comes from the Delta Water Treatment Plant for a normal year. The 2015 Plan also analyzes single dry and multiple dry water year supplies, and demands for the City.
Third Consecutive Dry Year Supply and Demand Comparison (acre-feet/year)
|
Water Supply |
2020 |
2025 |
2030 |
2035 |
2040 |
|
Delta Water Treatment Plant |
33,600 |
33,600 |
33,600 |
50,000 |
50,000 |
|
Groundwater |
23,100 |
23,100 |
23,100 |
23,100 |
23,100 |
|
Woodbridge Irrigation District |
0 |
0 |
0 |
0 |
0 |
|
Stockton East Water District |
4,084 |
4,084 |
4,084 |
4,084 |
4,084 |
|
Supply Total |
60,784 |
60,784 |
60,784 |
77,184 |
77,184 |
|
Demand Total |
35,086 |
37,317 |
39,710 |
42,275 |
45,025 |
|
Supply Minus Demand |
25,698 |
23,467 |
21,074 |
34,909 |
32,159 |
In the event of a third consecutive dry year condition, the water supplies available to the City exceed the water demands for the population projections from 2020 to 2040. Once more, the Delta Water Treatment Plant supplies the majority of the water supply for this particular event, and can be supplemented with groundwater. While other sources of water are available, they are also more susceptible to drought conditions. This event assumes Stockton East Water District and Woodbridge Irrigation District water supplies to the City will be reduced or eliminated for a particular dry year.
In accordance with Wat. Code §10621(b) a 60-day notice was provided to all applicable agencies on April 8, 2016, the 2015 Plan was made available for public inspection prior to consideration for adoption and notice of the time and place of the public hearing was provided in the Stockton Record on May 23, 2016
FINANCIAL SUMMARY
There is no impact to the General Fund, or any other unrestricted fund, from this action.