Drinking Water and Wastewater Services

The County of San Luis Obispo provides water services in specific areas. Other areas in the County are served by public or private water purveyors. If the location of a property is outside of the water purveryor boundaries, it likely requires a private groundwater well.

Unsure who your water provider is? Click here to view the water systems map and search by location.

County Service Areas (CSA)

• Pay your Water Bill
• Sewer and Water Connections (Will Serves)
• Potable Water Delivery and Availability     
• CSA 1 - Nipomo
• CSA 7/7A - Oak Shores
• CSA 10/10A - Cayucos Area
• CSA 12 - Avila Beach Area
• CSA 16 - Shandon
• CSA 18 - San Luis Obispo Country Club Area
• CSA 23 - Santa Margarita

Flood Control Zones

• Zone 1/1A - Arroyo Grande Creek Channel
• Zone 3 - Lopez Water Project
• Zone 9 - San Luis Obispo Creek Watershed

Regional Systems

• State Water Project
• Nacimiento Water Project
• Los Osos WasteWater Project
• Los Osos Water Recycling Facility Tours

Reports, Tools and Data

• Water Systems Map Viewer
• Drinking Water Data and Databases  (SWRCB)
• Information for Public Drinking Water Systems (SWRCB)
• Well Completion Reports and Standards (DWR)
• Public Works Water Quality Lab
• Consumer Condifence Reports (SWRCB)
• GAMA Groundwater Information System Map (SWRCB)
• Watershed Sanitary Surveys 
• State Household Water Supply Shortage Reporting System                                              

Click here to go back to the SLOCountyWater Information Directory home page.