What is Backflow and Cross-Connection?

Backflow, within the context of the water industry, is a reversal of the flow of water from the customer's plumbing system, back to the public water supply. This condition can occur when there is a loss of pressure in the public water system's distribution lines, allowing water from the customer's plumbing to drain or siphon back into the public water distribution lines buried beneath the ground.

More information please refer to:
Louisiana Department of Health

Backflow Protection & Cross-Connection Control [PDF]

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