Cross-Connection Control

​​​​Cross-connection control is a vital part of protecting our drinking water quality as the water passes through the distribution system to all the buildings in the city. A cross-connection, or the opportunity for substances other than drinking water to enter the plumbing,  can threaten the quality of our drinking water in the distribution system.  The City of Bellingham requires that all cross-connections or potential cross-connections have a backflow preventer installed and tested annually.

More Information

• Washington State Department of Health Cross-Connection Control
• American Backflow Pre​vention Association (ABPA)
• USC Foundation for Cross-Connection Control and Hydraulic Research
• Washington Administrative Code 246-290-485

For answers to specific cross-connection control questions, contact the Cross-Connection Control Specialists at the Operations Division of the Public Works Department.

Cross-Connection Control Specialists (360) 778-7700

Resources

• Public Works Contacts
• Partial list of state certified testers
• Backflow Assembly Test Report form
• Online Backflow Test Entry