Backflow will occur when the water pressure in the public water supply is lost, reduced, or if the customer’s water pressure becomes greater than the public supply. Depending on the type of cross connections that exist, contaminates can flow back into the customer’s water system and eventually into the public water supply. In addition to disease and illness, death can result when drinking water becomes contaminated by chemicals such as lead, cyanide, caustics and arsenic compounds. Pesticides and herbicides used widely in the home have also caused death via cross connections. Identifying potential hazards associated with cross connections, and eliminating or protecting against them is the concern of Hallsdale-Powell Utility District and the local public health agencies. Because almost all water systems have cross connections, the water system personnel must maintain a constant vigil for their detection and elimination.
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