Districts and Zones
The Sonoma County Water Agency manages and operates eight different sanitation zones and districts throughout Sonoma County. Learn more about each district or zone by clicking on a link below.
- Occidental County Sanitation District
- Russian River County Sanitation District
- Sonoma Valley County Sanitation District
- South Park County Sanitation District
- Airport/Larkfield/Wikiup Sanitation Zone
- Geyserville Sanitation Zone
- Penngrove Sanitation Zone
- Sea Ranch Sanitation Zone