
A mechanical device installed on water supply lines to prevent contaminated water from flowing backward into the clean water supply. Required by plumbing codes at cross-connection points where potable water could contact non-potable sources.
A mechanical device installed on water supply lines to prevent contaminated water from flowing backward into the clean water supply. Required by plumbing codes at cross-connection points where potable water could contact non-potable sources.

Las Vegas homes with irrigation systems, swimming pools, or fire sprinklers typically require backflow preventers. Annual testing is mandated by the Southern Nevada Health District to ensure the device functions correctly and protects the municipal water supply.
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