On Site Wastewater Treatment Systems

Most on-site wastewater systems, especially septic tanks, are regulated by local agencies (e.g., counties), and these agencies are best able to provide permitting information.

Find the State Water Resources Control Board Water Quality Control Policy for Siting, Design, Operation and Maintenance of Onsite Wastewater Treatment Systems (OWTS Policy) here: https://www.waterboards.ca.gov/water_issues/programs/owts/

For now, information may be obtained by contacting Margaret Monahan by email at: margaret.monahan@waterboards.ca.gov or by phone at: (510) 622-2377.

General Waste Discharge Requirements for Discharges of Winery Waste to Land