For Water Subcommittee Meeting April 30, 2026
TO: Water Subcommittee Members
APPROVAL: Tanya Williams, City Manager
FROM: Nicole Hemmans, Senior Administrative Analyst
Title
Provide the Water Subcommittee with a Status Update on the Rialto Supplemental Recycled Water Supply Project, Which Is Being Developed in Coordination with and Led by the Inland Empire Utilities Agency.
Body
RECOMMENDATION:
Staff recommends that the Water Subcommittee receive and file the project update.
BACKGROUND:
In April 2024, the City of Rialto and Inland Empire Utilities Agency (IEUA) entered into agreement to define the terms and conditions for the sale of recycled water supply for the benefit of the Chino Basin Project (CBP).
As part of this agreement, IEUA is developing the City of Rialto Supplemental Recycled Water Supply Project as one piece of IEUA's larger CBP. The Rialto Supplemental Recycled Water Supply Project will provide supplemental supply to IEUA's CBP and will develop new local water supply that enhances the overall water supply reliability and resiliency of the region. The IEUA CBP will include the construction and operation of a recycled water pump station and pipeline connection between the City of Rialto's Wastewater Treatment Plant (WWTP) and the IEUA Advanced Water Purification Facility (AWPF) being currently designed at IEUA's Regional Plant 4 (RP-4) in Rancho Cucamonga.
IEUA is currently advancing the CBP and moving steadily toward final design of the proposed recycled water pump station and pipeline connection between Rialto's WWTP and RP-4. Over the past several months, a series of coordination meetings have been held to refine key elements of the project. The City and RWS/Veolia, has been actively engaged in these discussions and has played an important role in evaluating and identifying preferred tie-in options at the WWTP and proposed pipeline alignments within the WWTP, to facilitate reliable delivery of recycled water to the proposed IE...
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