Backflow is a term in plumbing for an unwanted flow of water in the reverse direction. [1] It can be a serious health risk for the contamination of potable water supplies with foul water.

Backflow is the reverse flow of water or other substances into the treated drinking water distribution system. There are two types of backflow: (1) backpressure and (2) backsiphonage.

Apr 11, 2025 · Backflow occurs when water flows backward through your plumbing, potentially contaminating your home’s drinking supply. Your plumbing system is designed to deliver clean …

What is backflow? Backflow is the undesirable reversal of flow of water or other substances, from the normal direction of flow in a piping system, through a cross-connection into the public …

If you maintain a cross-connection on your property, you must protect your family and neighbors, as well as other water customers, from a backflow event by isolating the cross-connection as …

Backflow, reversal of flow from its normal direction, is usually caused by a backpressure or backsiphonage. Backpressure is a condition that manifests itself when the water pressure …

Sep 29, 2025 · Backflow is a reverse flow condition that can cause water or mixtures of water and other substances to be pulled back into a water distribution system. Without proper …

Backflow Prevention Device: Test Form This form is used to submit both initial and annual test results for backflow prevention device (s). Testing must be conducted by a certified tester …

The State Water Resources Control Board mandates water purveyors such as EBMUD to administer a cross-connection control and backflow prevention program, which helps to keep …

Backflow is the flow of water in the wrong direction from a resident’s water system into the public water supply.