What should a water supplier do to control cross-connections and protect their public water systems against backflow?
The Texas Commission on Environmental Quality gives public water suppliers two options: 1. Require backflow prevention at each service connection that may create a threat to the public water supply. 2. Require backflow devices and assemblies within a premises as outlined in the state required plumbing codes. The water suppliers usually do not have the capability to repeatedly inspect every consumer’s premises for cross-connections and backflow protection. Generally, this would include the water service connection to each dedicated fire protection system or irrigation piping system and the water service connection to each of the following types of premises: (1) premises with an auxiliary or reclaimed water system; (2) industrial, medical, laboratory, marine or other facilities where objectionable substances are handled in a way that could cause pollution or contamination of the public water system; (3) premises exempt from the State Plumbing Code inspection and premises where an interna
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