Be aware of situations where your home water supply does or could come in contact with non-potable liquid. Don’t let a cross connection be made if another, safer, way is possible. If cross connecting cannot be avoided, use the proper plumbing device to prevent any liquid from backflowing into the potable water system. For example, a hose bib (outside faucet) vacuum breaker is a simple, inexpensive plumbing device you attach to the faucet before attaching the hose. Other situations require a special backflow prevention device that will isolate potable water from potential contamination.
To protect the quality of tap water in your home never allow hoses to be submerged in sinks, pools, chemical mixing tanks, etc. Be sure your toilet flush valves have an anti-siphon device. Make sure any plumbing work done at your home is by a licensed plumber. Last, but not least, winterize your backflow device (PDF) correctly to prevent costly water leaks and damage next spring.
Helpful Resources
For more information about backflow prevention email Brian Breault, Cross-Connection Control Coordinator, or call at 970-256-4101.