Backflow testing & repair in Atherton, CA
BackflowCare tests backflow prevention assemblies in Atherton (San Mateo County) and files the results with California Water Service – Bear Gulch District. Property owners are responsible for their backflow assemblies, which Cal Water requires to be inspected and tested every year by a certified backflow prevention assembly tester. If a device fails, we make minor repairs and file the passing retest with Cal Water Bear Gulch.
- County
- San Mateo County
- Water supplier
- California Water Service – Bear Gulch District
- Annual test
- Cal Water Bear Gulch: owner hires a certified tester
- Our price
- $199 per device ($25 off for new customers), or from $180/year on a plan
- ZIP codes
- 94027
Rules for new and replacement devices in Atherton
- Only approved, testable backflow prevention assemblies may be installed at the water meter.
- Air gaps must also be inspected every year.
- The assembly installed must be the type Cal Water’s local cross-connection specialist specifies.
Source: Cal Water Bear Gulch backflow program (official page).
Installing or replacing a device takes a licensed plumbing contractor, usually with a permit. We can refer you to one we trust, test the new device once it’s in, and make minor repairs to existing ones.
Backflow questions from Atherton property owners
Which water supplier serves Atherton?
California Water Service – Bear Gulch District supplies water in Atherton (ZIP 94027) and runs its backflow program.
Who tests backflow devices for Cal Water Bear Gulch customers in Atherton?
Property owners are responsible for their backflow assemblies, which Cal Water requires to be inspected and tested every year by a certified backflow prevention assembly tester.