News & Analysis as of

State Water Boards Toxic Chemicals

Best Best & Krieger LLP

California State Water Resources Control Board Issues New and Revised PFAS Advisory Levels

On October 29, 2025, the California State Water Resources Control Board’s Division of Drinking Water (State Water Board) issued new and revised notification levels and/or response levels for four per- and poly- fluoroalkyl...more

Downey Brand LLP

California Steps Up Its Investigations and Permitting of PFAS

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The State Water Resources Control Board (State Water Board) recently updated the regulated community and the public on the Board’s statewide investigation to study and sample potential sources of per- and polyfluoroalkyl...more

Downey Brand LLP

Latest California State Water Board Investigative Order for PFAS Targets Bulk Fuel Storage Terminals and Refineries

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Last week, the California State Water Resources Control Board (State Water Board) officially released an order (the Order) to investigate and sample for per- and polyfluoroalkyl substances (PFAS) at over 160 bulk fuel storage...more

Downey Brand LLP

State Water Board Issues Notification and Response Levels for PFBS in Drinking Water; DTSC to Finalize Carpets and Rugs with PFAS...

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There has been no shortage of recent regulatory developments concerning per- and polyfluoroalkyl substances (PFAS) in California, which are especially relevant to drinking water systems and the consumer product community. ...more

Farella Braun + Martel LLP

New Screening Levels for Key PFAS Chemicals Will Spur Regulatory Action at Contaminated Sites

In support of the State Water Resources Control Board’s (State Board) efforts to investigate and evaluate the public health effects of per- and polyfluoroalkyl substances (PFAS), the San Francisco Regional Water Quality...more

Nossaman LLP

State Water Board Imposes Stricter Response Levels for PFOA and PFOS

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On February 6, 2020, the California State Water Resources Control Board lowered the response levels (RLs) for perflourooctanoic acid (PFOA) and perfluorooctanesulfonic acid (PFOS), two of the most common compounds in the...more

Allen Matkins

California Environmental Law & Policy Update - February 2020

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Governor Newsom proposes new plan for San Joaquin River Delta - Governor Gavin Newsom revealed a novel approach Tuesday to managing the San Joaquin River Delta that would keep more water in the fragile delta while restoring...more

Downey Brand LLP

PFAS Are Here: First Round of Results Show PFAS in California Drinking Water Supply Wells

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Results from the first phase of sampling drinking water supply wells for per- and polyfluoroalkyl substances (PFAS) were recently published by the California State Water Resources Control Board (State Water Board) and show...more

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