City Council Agenda
Memo to:
Manteca City Council
From:
Michael Selling, Assistant Director of Engineering/City Engineer
Prepared by:
Wing Chang, Assistant Engineer;
Somporn Boonsalat, Deputy Director of Engineering
Date:
May 12, 2026
Subject:
2025 Urban Water Management Plan and Water Shortage Contingency Plan Adoption
Recommendation:
title
Hold a Public Hearing to consider adoption of a resolution approving the 2025 Urban Water Management Plan and the Water Shortage Contingency Plan.
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Background:
California Water Code Sections 10610-10656 and 10608 requires that all urban water suppliers delivering over 3,000 acre-feet of potable water per year or having more than 3,000 urban connections submit an Urban Water Management Plan (UWMP) once every five years. The City of Manteca's (City) potable water supply is comprised of approximately 60% surface water, provided by South San Joaquin Irrigation District (SSJID), and 40% groundwater provided by City wells. The City currently has close to 30,000 water service connections and in 2024 the City delivered over 15,000 acre-feet of groundwater. The surface water provided by SSJID is required to be included in their UWMP. The City is required to update and submit its 2025 UWMP to the California Department of Water Resources by July 1, 2026.
Failure to complete the UWMP would disqualify the City from State grants earmarked for drought response, recycled water, and infrastructure improvements.
On July 30, 2025, the City approved an agreement for services with West Yost for the preparation of the 2025 UWMP for an amount of $106,070.
The UWMP provides a detailed summary of the present and future water resources and demands within the City's Water System service area and assesses its water resource needs over a 25-year planning period in 5-year increments through 2050. The UWMP includes analysis of the distribution system water losses, detailed reporting on droughts, seismic risk, energy intensity, wat...
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