Urban Water Management Plan

The City of Lathrop is currently soliciting public review and comment on the 2025 Urban Water Management Plan (UWMP) and Water Shortage Contingency Plan (WSCP). The major change to the 2025 UWMP is to update for consistency with the latest Integrated Water Resources Master Plan amendment. Please find the 2025 UWMP below. If you would like to provide a comment on the UWMP, or would like more information, please contact:

Jonah Sonner, Compliance Engineer

Public Works Department

(209) 941-7430 - jsonner@ci.lathrop.ca.us

A public hearing will be held on May 11, 2026 to consider adoption of the 2025 UWMP. All members of the public are invited to participate and provide feedback or comment on the plan during the public meeting. Please see https://www.ci.lathrop.ca.us/meetings  for details on the meeting location and agenda. 

Background: The Urban Water Management Planning Act, passed by the California legislation in 1983, requires urban water suppliers to develop UWMPs to address changing conditions related to water sources, water availability, water demands, and water reliability for the next 20 years. In 1991, the State added the requirement to include a WSCP to outline the water supplier’s response and plan for changes or shortages in water supplies. Water suppliers are required to update and submit their Plan to the Department of Water Resources every five years. Compliance with the Act is necessary to be eligible for State grants, loans, and drought assistance.

An approved UWMP may be used as a source of information for water supply assessments, and written verifications of water supply. In addition, an UWMP may serve as a long-range planning document for water supply, a source of data for development of a regional water plan and a source document for cities and counties as they prepare their General Plans.

Please see our Water Conservation page for more information.