Water Quality Control Policy for Siting, Design, Operation and Maintenance of Onsite Wastewater Treatment Systems (OWTS) Policy

OWTS Policy Ex Parte Disclosures

  • October 31, 2022, California Coastkeepers Alliance and State Water Board Vice Chair Dorene D’Adamo Communication Ex Parte Form

OWTS Policy Renewal Staff Workshop October 4, 2022

Please email staff at DWQ-WDR@Waterboards.ca.gov for a copy of the presentation slides

Draft OWTS Policy renewal documents for public comment released September 16, 2022

Please email DWQ-WDR@Waterboards.ca.gov for a pdf copy of the Draft Policy Document

OWTS Policy Renewal Public Notice August 17, 2022

OWTS Policy Update, April, 2018

Board Adopted (Final) Documents:

Board Adopted Policy

Map Tool

More Information

Onsite Wastewater Treatment Systems Policy

  1. Accessory Dwelling Unit Permitting Guidelines Onsite Wastewater Treatment
  2. Local Agency Reporting of Groundwater Monitoring Data
  3. Local Agency Monitoring and Reporting Requirements
  4. Water Quality Control Policy for Siting, Design, Operation and Maintenance
  5. Commercial Food Service Wastewater Issues
  6. OWTS Policy Guidance Timeline Table
  7. LAMP Contact List

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