OWTS Policy Regional Jurisdictions and Contact list

The OWTS Policy Allows Tier 2 Local agency Management Programs to manage the installation of new and replacement OWTS under that program. Local Agency Management Programs approved under Tier 2 provide an alternate method from Tier 1 programs to achieve the same policy purpose, which is to protect water quality and public health.
For permitting and case specific questions, please contact the respected Regional Water Quality Control Boards or your local agency directly.

For General Questions or assistance, please contact the State Water quality Control Board at  DWQ-WDR@Waterboards.ca.gov

Listed Below are the Regional Water Quality Control Board Pages and their Local Agency Jurisdictions*:

Region 1
Del Norte County, Humboldt County, Mendocino County, Siskiyou County, Sonoma County, Trinity County

Region 2 
Marin County, Alameda County, San Mateo County

Region 3
Santa Barbara County, Monterey County, San Luis Obispo County, City of Atascadero, San Benito County, Santa Cruz County, Santa Clara County

Region 4
Ventura County, Los Angeles County

Region 5
Butte County, Glenn County, Modoc County, Plumas County, Shasta County, Tehama County, Town of Paradise, Amador County, Colusa County, El Dorado County, Lake County, Nevada County, Placer County, Sacramento County, San Joaquin County, Sierra County, Solano County, Stanislaus County, Sutter County, Yolo County, Yuba County, Calaveras County, Fresno County, Kern County, Kings County, Madera County, Mariposa County, Merced County, Tulare County, Tuolumne County

Region 6
Alpine County, Lassen County, City of Adelanto, Town of Apple Valley, City of Barstow, California City, City of Hesperia, Inyo County, Mono County, San Bernardino County

Region 7 
Imperial County, Unincorporated Riverside County, City of Needles

Region 8
Unincorporated Orange County, City of Yucaipa, City of Rancho Cucamonga, City of Redlands

Region 9
County of San Diego