How to submit a backflow test report to Metropolitan Water Dist. of So. Cal.
Metropolitan Water Dist. of So. Cal. is a public water system in Los Angeles County, California. Backflow preventer assemblies on its distribution system must be tested by a certified tester and the test report filed with the purveyor — here is how filing works.
How to file your backflow test report
Metropolitan Water Dist. of So. Cal. is a wholesale water agency and does not receive backflow test reports. Backflow filings go to the retail water system that serves the address, not to the wholesaler. Look up the retail purveyor for the service address instead.
The California form requirement
California does not mandate a single statewide test form. Most purveyors accept the standard USC/AWWA-style report, which BackflowGo generates — requirements live at the purveyor level.
Listing data is sourced from the EPA SDWIS federal registry and BackflowGo's own purveyor research. All California water systems →