Alameda County Backflow Testing Information

Backflow Prevention Resources

• Approved Testers List (PDF) – View a list of local plumbing contractors who are certified backflow prevention device testers authorized and registered to perform work for ACWD customers.

• Backflow Device Installation Drawings – View ACWD backflow prevention device standard installation drawings showing the required type and location of devices, including standard specification requirements.

• Backflow Prevention Explained – Learn about ACWD’s program to prevent contamination of the water supply from backflow or cross connection of non-potable water sources.

• Backflow Prevention Forms – Find required backflow prevention forms, including testing applications and testing reports.

• Backflow Prevention Regulations – View regulations and ordinances that govern the ACWD backflow prevention program.