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.

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 occurs when water flows in the reverse direction from its intended path, potentially allowing contaminated water to enter potable water supplies. This phenomenon poses …

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.

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 …

Backflows Northwest is a licensed and insured backflow testing and repair company. All of our testers are Washington State Department of Health certified Backflow Assembly Testers.

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 …

This report should help backflow assembly testers (BATs) and water systems comply with the minimum test report content requirements in the Operator Certification Rule.

Backflow Prevention Explained - Learn about ACWD's program to prevent contamination of the water supply from backflow or cross connection of non-potable water sources.

Backflow is a situation that can occur when hydraulic conditions within a water system deviate from "normal" conditions, possibly allowing contaminated water to enter through a cross …