Welcome to the State of California 

Division of Drinking Water and Environmental Management

CDPH's Division of Drinking Water and Environmental Management (DDWEM) promotes and maintains a physical, chemical, and biological environment that contributes positively to health, prevents illness, and assures protection of the public.

DDWEM's Major Components

  • Drinking Water and Radiation Laboratory (DWRL). DWRL provides analytical support to the DDWEM's programs and CDPH's Radiological Health Branch, and, through interagency agreements, to other State agencies.
  • Environmental Management Branch (EMB). EMB regulates medical waste generators, shellfish production and harvesting operations, and recreational health (swimming pools and ocean beaches); provides sanitary surveillance of state institutions; oversees the Registered Environmental Health Specialist program; oversees radiological surveillance around federal facilities, the state's radon program, and the Medical Waste Management Program; and houses CDPH's Nuclear Emergency Response Program.

On July 1, 2014, the Drinking Water Program and the Environmental Laboratory Accreditation Program moved from CDPH to the State Water Resources Control Board. Find out more at http://www.swrcb.ca.gov/drinkingwater/index.shtml.

  • Drinking Water Program (DWP). DWP regulates public water systems; promotes and provides information on drought preparedness, water conservation and water supply emergency response; oversees water recycling projects; certifies residential 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; oversees the Drinking Water Treatment and Research Fund for MTBE and other oxygenates; and provides funding opportunities for water system improvements, including funding under Proposition 84, Proposition 50 and the Safe Drinking Water State Revolving Fund. 
  • Environmental Laboratory Accreditation Program (ELAP). ELAP provides evaluation and accreditation of environmental testing laboratories to ensure the quality of analytical data used for regulatory purposes to meet the requirements of the State's food, drinking water, wastewater, shellfish, and hazardous waste programs.

Receive Notices about Webpage Updates                                                         

DDWEM has created LISTSERVs to notify customers when webpages have been updated.  Anyone can sign up to receive these notifications.  Subscribing and unsubscribing are done by an automated system.  To subscribe, send a blank email to one or more of the following email addresses.  

For DWP and ELAP, which moved from CDPH to the Water Board on July 1, 2014, the SWRCB maintains email lists to provide updates about its programs.

  • Drinking Water Program Updates: Find out more subscribing here (Click on Water Quality Topics, then check Drinking Water Program Announcements).
  • Environmental Laboratory Accreditation Program Updates:  Find out more subscribing here (Click on Water Quality Topics, then check Drinking Water Environmental Laboratory Accreditation Program).                            
Last modified on: 8/19/2014 3:49 PM