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Page 1 of 2 <br />Item #5 <br /> CITY COUNCIL AGENDA REPORT <br /> <br />February 3, 2026 <br />Public Works - Utilities Division <br /> <br />TITLE: RECEIVE AN UPDATE ON THE REGIONAL GROUNDWATER FACILITIES <br />IMPROVEMENT PROJECT – PHASE 1 FEASIBILITY STUDY RESULTS <br /> <br />SUMMARY <br />This report provides the City Council with an informational update on the Phase 1 Feasibility <br />Study for the Regional Groundwater Facilities Improvement Project. <br /> <br />RECOMMENDATION <br />Receive an update on the Regional Groundwater Facilities Improvement Project – Phase 1 <br />Feasibility Study Results. <br /> <br />BACKGROUND <br />On June 18, 2024, the City Council approved an agreement between the City of Pleasanton <br />and Zone 7 Water Agency to perform a Phase 1 feasibility review for the Regional <br />Groundwater Facilities Improvement Project. This work was necessary after per- and <br />polyfluoroalkyl substances (PFAS) were discovered in the City's groundwater supply, and <br />because the City's wells were aging and beginning to fail. Therefore, this effort supports the <br />City’s evaluation of options to recover the use of its Groundwater Production Quota (GPQ) of <br />3,500 acre-feet per year. <br /> <br />The City shared costs with Zone 7 to explore the feasibility of constructing new groundwater <br />wells in Pleasanton. The City's cost-share portion for this phase is not to exceed $1,283,231. <br />The three proposed sites for the Phase 1 feasibility work included Tennis Park, Hansen Park, <br />and Del Prado Park, whichare located on property owned by the City of Pleasanton. <br /> <br />DISCUSSION <br />As the Tri-Valley Groundwater Manager, Zone 7 Water Agency has taken the lead in <br />performing the Phase 1 feasibility study for engineering and construction, water modeling, <br />contract management and feasibility analysis. <br /> <br />The feasibility study was completed in December 2025. An informational update was <br />presented by Zone 7 staff to their Board on January 21, 2026. The Zone 7 agenda report and <br />presentation materials provided to the Board are included as Attachments 1 and 2, <br />respectively. <br /> <br />The purpose of this report is to provide the City Council with the same informational update <br />presented to the Zone 7 Board. <br /> <br />City staff is currently reviewing the final feasibility study report and conducting an independent <br />evaluation. Staff anticipate completing this analysis and plan to return to the City Council in <br />late March or early April with a recommendation and to seek City Council direction on next <br />Page 22 of 80