A backflow prevention assembly is a certified assembly that prevents the undesirable reversal of flow of water or other substances through a cross-connection into the District’s water system, or consumer’s potable water system.
The Safe Drinking Water Act Amendments of 1986, and regulations of most states, state that the water purveyor has the primary responsibility of preventing water from unapproved sources, or any other substances, from entering the public potable water system. The health agency has the overall responsibility for preventing water from unapproved sources to enter either the potable water system within the water consumer’s premises or the public water supply directly. Kitsap Public Utility District operates and maintains a cross connection control program, in accordance with the Department of Health requirements per Washington Administrative Code (WAC) 246-290-490 which states,
"Purveyors have the responsibility to protect the public water systems from contamination due to cross connection. Cross connections which can be eliminated shall be eliminated. The Purveyors shall work cooperatively with the local authorities to eliminate or control potential cross connections."
In accordance with WAC 246-290-490, Kitsap PUD requires all backflow prevention assemblies will be tested upon installation, repair, or relocation and annually by a certified Backflow Assembly Tester (BAT). All tests must be completed annually to avoid potential termination of service.
A cross connection is any physical or potential arrangement whereby the KPUD’s water system is or may be connected, directly or indirectly, with any other water supply system, sewer, drain, conduit, pool, storage reservoir, plumbing fixture, or other device which contains, or may contain, contaminated water, sewage, or other waste or liquid of unknown quality which may be capable of having the potential to contaminate the District’s water supply as the result of backflow or backsiphonage. By-pass arrangements, jumper connections, removable sections, swivel or changeable devices, and other temporary or permanent devices through which, or because of which, a backflow or back-siphonage may occur, are considered to be cross-connections.