Waste Discharge Requirements Program

Waste discharges that can be exempted from the California Code of Regulations (CCR) requirements are issued waste discharge requirements (WDRs) and are regulated by the WDR Program. Typical discharge types includes domestic or municipal wastewater, food processing related wastewater, and industrial wastewater.

State regulations addressing the treatment, storage, processing, or disposal of waste are contained in Title 27, CCR, section 20005 et seq. (hereafter Title 27). Discharges that qualify for exemption from Title 27 must be consistent with the exemptions provided in Title 27 section 20090.

General Information

April 4, 2023, The draft  Water Quality Control Policy for Siting, Design, Operation and Maintenance of Onsite Wastewater Treatment Systems (OWTS) Policy renewal documents released in response to public comment and can be found on the OWTS program webpage .

If your activities, discharges, or proposed activities or discharges from your property or business could affect California's surface, coastal, or ground waters, in most cases you will need to apply for a permit from the appropriate Regional Water Quality Control Board.