Washington State and the Department of Health mandates that all community water systems must initiate and maintain a viable Cross Connection Control Program. Cross Connection Control is a vital part of ensuring clean and safe water delivery.
What is a “Cross Connection”?
A cross connection is any actual or potential connection between a potable water supply and any pipe, vessel, tank, plumbing fixture, equipment, or device through which it is possible for used, polluted, or contaminated water or any other substance to enter into the public water system.
Examples of Cross Connection Include:
- Irrigation or in-ground sprinkler systems
- Fire sprinkler systems
- Swimming pools
- Chemical dispensers
If you have any of these in your home or business, you need backflow prevention.
A backflow is any undesirable reversal of flow from the intended direction as the result of either: backsiphonage (the reversal of flow due to a negative or reduced pressure within the public potable water supply) or backpressure (the reversal of flow caused by pressure which exceeds the operating pressure of the public potable water supply).
Properly installed and maintained backflow prevention assemblies stop contaminated water from reaching your tap or the water system. Most cross connections will need to have an approved mechanical backflow prevention device or assembly installed. The type of assembly will depend on the potential hazard present. They must be tested annually and the City of Fircrest requires a copy of each test report.
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