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Sanitation Districts

Community service districts (CSD) are separate legal entities, own their assets and infrastructure.

District 1 - South Park County Sanitation District

District 3 - Graton Community Service District

District 4 - Sea Ranch Sanitation Zone

District 5 - Sonoma Valley County Sanitation District

District 7 - Occidental County Sanitation District

District 8 - Penngrove Sanitation Zone

District 9 - Russian River County Sanitation District

District 10 - Geyserville Sanitation Zone

District 11 - Airport/Larkfield/Wikiup Sanitation Zone

District 12 - Canon Manor

The County Board of Supervisors acts at the CSD Board of Directors except for the Sonoma Valley CSD (which is comprised of the Mayor of Sonoma, the First District Supervisor, and the County Board of Supervisors’ Chair).

Sanitation zones (SZ) have assets and infrastructure owned by the Sonoma County Water Agency with the County Board of Supervisors acting as the zone Board of Directors.

Graton elects their own Board of Directors.

Sewage from the Canon Manor area is governed by the City of Rohnert Park (with waste going to the City of Santa Rosa Llano wastewater treatment plant).

Permit Sonoma issues building sewer permits for Forestville.

Contact Information

Contact Us by Phone
2550 Ventura Avenue
Santa Rosa, CA 95403
38.465074, -122.723705

Sanitation Codes & Standards

Sanitation Codes and Standards
Codes set forth uniform requirements for contributors to the wastewater collection and treatment systems.