The Town of Yountville has updated its Backflow Tester List, an important resource for residents and businesses working to meet annual testing requirements.

Backflow prevention is a critical part of protecting our shared drinking water system. A backflow condition occurs when water flows in the opposite direction, potentially carrying contaminants into the public water supply. To guard against this, the Town’s Cross Connection Control Program ensures that properties with potential cross connections such as fire sprinklers, swimming pools, irrigation systems, wells, and water softeners have appropriate backflow prevention assemblies installed and tested.

Since 2018, the Town’s Utility Operations Division has overseen this program directly to ensure greater accuracy and transparency. Our certified operators hold credentials in both water treatment and distribution, and are also AWWA-certified Backflow Assembly Testers and Cross Connection Control Specialists. Their expertise, combined with state and federal regulatory requirements, helps safeguard the community’s water system.

By keeping the Backflow Tester List current, we provide the public with confidence that only qualified, approved testers are available to perform the required annual testing and maintenance of backflow prevention assemblies.

View the updated list here: Town of Yountville 2025 Backflow Tester List
More information about the program is available on our website: Backflow Prevention Program

If you have questions or would like more information, please contact the Public Works Department at (707) 944-8851.

Thank you for your attention to this important update and for helping us maintain a safe and reliable water system for the entire Yountville community.