For Utilities Commission Meeting May 19, 2026
TO: Honorable Chairperson and Commission
APPROVAL: Yazdan Emrani, P.E., Director of Public Works
FROM: Nicole Hemmans, Senior Administrative Analyst
Title
Request for the Cable Advisory and Utilities Commission to Recommend the City Council/Rialto Utility Authority Board Conduct a Public Hearing to Consider Adopting the 2025 Upper Santa Ana River Integrated Regional Urban Water Management Plan Comprised of the Urban Water Management and the Water Shortage Contingency Plans. (ACTION)
Body
RECOMMENDATION
Staff requests that the Cable Advisory and Utilities Commission recommend that the City Council/RUA Board conduct a Public Hearing to consider adopting the 2025 Upper Santa Ana River Integrated Regional Urban Water Management Plan comprised of the Urban Water Management and the Water Shortage Contingency Plans.
BACKGROUND
California Water Code Section 10621(a) requires urban water suppliers to update their Urban Water Management Plan (UWMP) at least once every five (5) years, with the 2025 UWMP due to the California Department of Water Resources (DWR) by July 1, 2026.
As previously presented to the Water Subcommittee on March 27, 2025, the City of Rialto participated in a regional UWMP effort led by San Bernardino Valley in coordination with multiple regional water agencies. This regional approach allows participating agencies to streamline costs, share data, and ensure consistency across water supply planning efforts.
Water Systems Consulting, Inc. (WSC) was selected through a regional Request for Proposals (RFP) process to prepare the 2025 UWMP.
Since that time, staff and the consultant team have worked collaboratively to complete the required updates, incorporating current water supply data, demand projections, regulatory requirements, and long-term planning assumptions.
ANALYSIS/DISCUSSION
The Final 2025 UWMP has now been completed and includes updated information related to:
* Water supply reliabi...
Click here for full text