Backflow testing for ACWD customers
Customers use a certified backflow tester who is authorized and registered to work for ACWD customers; ACWD publishes the list of approved testers. BackflowCare tests assemblies for ACWD customers in Fremont, Newark and Union City, and files the results with ACWD.
- Area
- Alameda County
- Cities we serve
- Fremont, Newark, Union City
- Annual test
- Owner hires a certified tester
- Our price
- $199 per device ($25 off for new customers)
- ACWD contact
- Backflow Prevention, 510-668-6584
ACWD testing rules
- After a backflow device is installed, the law requires it to be tested by a certified tester at least once a year.
- Homes with a backup supply such as a private well or spring must have the proper backflow prevention device.
Source: Alameda County Water District backflow program (official page), checked October 17, 2026.
ACWD rules for new and replacement devices
- One of ACWD’s certified Cross Connection Specialists surveys the property and, if needed, asks the customer to install a backflow prevention device at the meter.
- ACWD publishes standard installation drawings that show the required type and location of devices.
Source: Alameda County Water District backflow program (official page).
ACWD backflow questions
Who tests backflow devices for ACWD customers?
Customers use a certified backflow tester who is authorized and registered to work for ACWD customers; ACWD publishes the list of approved testers.
Which cities does ACWD serve?
We serve ACWD customers in Fremont, Newark and Union City.