Backflow testing & repair in Danville, CA
BackflowCare tests backflow prevention assemblies in Danville (Contra Costa County) and files the results with East Bay Municipal Utility District. The property owner hires a certified tester, and the test must be performed by a tester on EBMUD’s approved backflow testers list. If a device fails, we make minor repairs and file the passing retest with EBMUD.
- County
- Contra Costa County
- Water supplier
- East Bay Municipal Utility District
- Annual test
- EBMUD: owner hires a certified tester
- Our price
- $199 per device ($25 off for new customers), or from $180/year on a plan
- ZIP codes
- 94506, 94526
What EBMUD requires in Danville
- Testers must be certified as a General Backflow Tester by AWWA, ABPA, NCBPA or ASSE and also pass an EBMUD exam.
- The completed test form is due by mail within 30 days of EBMUD’s notification.
- Since July 1, 2025, customers with a private well must test annually and submit the results (EBMUD Regulations, Section 26).
Source: EBMUD backflow program (official page), checked October 17, 2026.
Rules for new and replacement devices in Danville
- The customer must install, test and maintain the required device and pays all of its costs.
Source: EBMUD 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 Danville property owners
Which water supplier serves Danville?
East Bay Municipal Utility District supplies water in Danville (ZIP 94506, 94526) and runs its backflow program.
Who tests backflow devices for EBMUD customers in Danville?
The property owner hires a certified tester, and the test must be performed by a tester on EBMUD’s approved backflow testers list.
When is the backflow test due in Danville?
The completed test form is due by mail within 30 days of EBMUD’s notification.