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When a connection is made to the public water system, the water should flow from the distribution system to the customer. However, it is possible under certain circumstances for the flow to be reversed and flow from the customer's plumbing system into the public water distribution system. This is called a "backflow", and if this situation occurs it is possible for the public water systems to be contaminated. If properly maintained and annually tested, the backflow prevention assembly is a mechanical device that will prevent backflow from occurring. To view cross-connection control and backflow prevention assembly requirements, please click here for the Department of Utility Services' Cross-Connection Control Chapter of the City of Henderson Municipal Code . (FAQ7252)
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