Backflow Prevention

Backflow is the undesirable reversal of the flow of water or mixtures of water and other undesirable substances from any source (such as used water, industrial fluids, gasses, or any substance other than the intended potable water) into the distribution pipes of the potable water system. 

Cross Connection Control Program

The Cross Connection Control Program (CCCP) works hard to protect your drinking water from contamination by ensuring that all cross connections are protected. 

A cross connection is an actual or possible pathway between our drinking water supply and a source of contamination or pollution. In our homes and businesses, water is often used to dilute, mix, cool and clean. This water may come into contact with dangerous chemicals and substances. Cross connected plumbing may put your drinking water in contact with contaminated water.

The CCCP surveys plumbing systems to identify cross connection hazards and determines if the correct backflow assembly is installed and maintained.

The City surveys commercial properties annually to ensure cross connection compliance and safe drinking water quality. The need for cross connection control exists in all types of premises, whether industrial or residential. 

Annual Testing

The City's CCCP mails out reminder letters annually to all businesses and homeowners that need to have their assemblies tested. This is a simple testing procedure performed by any State Certified Backflow Assembly Tester. 

You can ensure your tester is certified by visiting Washington Certification Services BAT site where you can search by name or certification number.