Watershed Sanitary Survey

The Safe Drinking Water Act Surface Water Treatment Rule and the State of California Title 22, Code of Regulations, requires all domestic water suppliers treating surface water to conduct a Watershed Sanitary Survey of their watersheds and to update the survey every 5 years. The purpose of the survey is to evaluate the potential contaminant sources within the watershed that may impact drinking water quality. Following is the final 2020 Watershed Sanitary Survey.

Watershed Sanitary Survey – Final (PDF)