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ARTICLE · 12 AUGUST 2024

California Direct Potable Reuse Regulations Approved

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On August 6, 2024, the Office of Administrative Law (OAL) approved the direct potable reuse (DPR) regulations that were previously adopted by the State Water Resources Control Board...

United StatesEnergy and Natural Resources
Willis Hon
Willis Hon
Alexander J. Van Roekel
Alexander J. Van Roekel
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On August 6, 2024, the Office of Administrative Law (OAL) approved the direct potable reuse (DPR) regulations that were previously adopted by the State Water Resources Control Board (State Water Board) on December 19, 2023. The approved regulations – which go into effect on October 1, 2024 – will allow public water systems and other agencies in California to obtain permits to develop DPR projects.

DPR is when purified recycled water is placed directly into a public water system or into a "raw" (untreated) water supply immediately upstream of a drinking water treatment plant. The extensive DPR regulations require an exceptionally high level of treatment, reflecting the recommendations of independent expert review panels and advisory groups convened by the State Water Board to ensure the DPR regulations will protect public health.

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