City staff told the board that large data centers can withdraw from tens of millions to more than 1 billion gallons annually depending on size and cooling technology; staff said pretreatment permits, sampling and PFAS monitoring will be used to manage wastewater risks.

Discussion highlights the urgent need for PFAS monitoring in California’s agricultural sectors.

Draft language would require closed‑loop cooling or approved alternatives, trigger surface‑water withdrawal assessments at a future regulatory threshold, and require PFAS monitoring and discharge limits tied to water‑quality standards or EPA reporting limits; committee debated feasibility and implementation timing.

Officials said engineering firm GZA is preparing plans for a temporary dam repair to restore water levels before winter, DES will monitor PFAS in mixing pits and pump-station solids, and older notices indicate a compliance history dating to the 1980s.