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Information for Public Drinking Water Systems

The Division of Drinking Water (DDW) regulates public water systems; oversees water recycling projects; permits water treatment devices; supports and promotes water system security; and performs a number of other functions. For more about DDW activities, click on a link below.

The Division of Financial Assistance provides funding opportunities for drinking water system improvements; provides support for small water systems and for improving technical, managerial, and financial (TMF) capacity; and certifies drinking water treatment and distribution operators.

Private domestic wells are not regulated by DDW; the GAMA Program has information pertinent to private domestic well water quality.

Announcements

Backflow Prevention Devices/Cross-Connection Control
Permits for Herbicides to Control Aquatic Plants (SWRCB)
US EPA's Public Drinking Water Systems Programs
Contact Information

 

(Updated 6/8/16)