If you have an irrigation system for your yard, boiler, pool/spa, water feature, fire sprinkler system or photo development equipment, state law requires that you get a backflow prevention assembly to prevent contaminated water from flowing back into your drinking water—a serious health hazard. Many businesses are also required to have backflow prevention.
Even the best backflow assembly can fail because of freezing, debris, improper installation and unapproved plumbing connections. That’s why state law requires that backflow assemblies be tested annually by a certified backflow assembly tester—to ensure that the assemblies will function if there is a backflow event.
Cross Connection Control Program
Through the city's Cross Connection Control Program, the Utilities Department maintains a database of assemblies installed throughout the city, monitors their testing and sends customers a reminder notice, an assembly report and an updated list of qualified testers when testing is due. Your efforts in performing required testing and reporting new cross connections when found or created goes a long way in helping protect your drinking water quality. We appreciate your cooperation.
Keeping water safe at your home
To prevent backflow:
- Do not submerge a garden hose into water in a pool, sink or bucket.
- Do not use hose-end applicators to apply garden chemicals to your yard.
Bellevue strives to provide the highest quality water to customers, and protecting against potentially harmful backflows is a very important part of this effort. If you have any questions about backflows or any other water quality issue, please contact Utilities at 425-452-5208.
Backflow Assembly Testers
Backflow Test Form