Welcome to the State of California 

Public Drinking Water Systems

The Drinking Water Program (DWP) regulates public water systems; oversees water recycling projects; permits water treatment devices; certifies drinking water treatment and distribution operators; supports and promotes water system security; provides support for small water systems and for improving technical, managerial, and financial (TMF) capacity; provides funding opportunities for water system improvements.  DWP is within the Division of Drinking Water and Environmental Management.

The following links provide information for public water systems and other interested parties.  For other water-related topics, click here.