Below is a list of AWWA-certified Backflow Prevention Testers who are approved by the District to assist you with the testing process.

These testers are also included on the District’s reminder letters. While this list is not exhaustive and other qualified testers may be available, the individuals listed here have submitted all required documentation and applications to be officially recognized by the District for the current calendar year.

Donny Breedlove: (707) 530-8451

Edgar Ketchum: (707) 350-5152

Frank Haas: (707) 489-8052

Jim Crozier: (575) 302-3808

John (Jack) Wise: (415) 497-3602

Why Backflow Devices Matter

Backflow prevention devices play a critical role in protecting the safety of our community’s drinking water.

These devices are designed to prevent contaminated water from flowing backward into the public water supply. Without proper backflow prevention, substances like fertilizers, chemicals, bacteria, or other pollutants from homes, businesses, or irrigation systems could enter the clean water system—posing serious health risks to everyone connected to it.

To ensure these devices function properly, regular testing and maintenance are required. The District’s Backflow Prevention Program exists to help safeguard the quality of our water and ensure compliance with local and state health regulations.

By maintaining your backflow device and staying up to date with required testing, you're helping protect not only your property but also the health of your neighbors and the broader community.

Clean, safe water starts with prevention. Thank you for doing your part.