California Backflow Testing

California Backflow Testing Rules

California requires annual backflow prevention testing under Title 17. Certified testers ensure devices protect drinking water and meet state compliance standards.

California Title 17 Requirements

Annual testing required for all backflow prevention assemblies.

Only California-certified Backflow Assembly Testers (BATs) may test.

Tests after installation, repair/relocation, and annually for compliance.

Water purveyors may disconnect service if compliance is not met.

Why Backflow Testing Matters

Backflow testing prevents contaminants from entering the public water supply,
protects public health, and helps property owners avoid penalties or service interruptions.

This page summarizes requirements from the California State Water Resources Control Board (Title 17) regarding backflow prevention and testing.
For official regulations, please refer to the California Title 17 Cross-Connection Control regulations.

Key Backflow Compliance Programs

California’s annual testing requirements are part of a broader compliance framework. Explore how state rules connect to national standards and cross-connection programs.

U.S. EPA Guidelines

The U.S. Environmental Protection Agency sets nationwide standards for safe drinking water. These guidelines influence California’s backflow prevention and testing programs.

View EPA Guidelines

Cross-Connection Control Programs (CCCP)

Cross-Connection Control Programs (CCCP) ensure local water purveyors enforce California Title 17 testing requirements. These programs provide enforcement at the community level.

Learn About CCCP

Other State Backflow Programs

Many states share similar standards to California’s Title 17. Compare requirements across Oregon, Washington, and Florida.

Compare State Programs

Important Note

The sole goal of these resources is education. BackFlowRates.com is not associated with the EPA or state authorities, nor does it enforce cross-connection programs.

Explore State Backflow Programs

California’s backflow testing standards are part of a larger national effort. Learn how different states approach compliance by visiting our dedicated program pages.

View State Programs

Oregon Backflow Testing

Learn about Oregon’s OHA requirements and annual testing compliance.

Explore Oregon

Discover how Title 17 defines California’s cross-connection standards.

Explore California

Florida Backflow Testing

Understand Florida’s certified tester requirements and enforcement policies.

Explore Florida

Find Certified Backflow Testers Near You

Protect California’s drinking water with annual backflow testing. Browse certified testers and book your service directly through our marketplace.

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