Alameda County Backflow Testing
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.