List of Approved Backflow Devices

CDPH

Approved Backflow Prevention Devices List
Those seeking to acquire the list of approved backflow prevention devices should call the Drinking Water Program at (916) 449-5600 and request a copy of the list [or the portion needed -- the list is by size of device, so if you’re only looking for a 4-inch reduced pressure (RP) backflow prevention device, for example, only a page or two may be needed].

  • The list will only be provided via fax or US mail (no electronic copies will be provided).
  • Copies will be provided only to regulated entities and consultants working in California.
  • There is a limit of one per customer.

 

USC

University of Southern California List of Approved Backflow Devices
(In order to view the approved list, a membership is required and explained on the USC's web site)






















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