What is a backflow test?

A backflow test is a procedure that is conducted on a plumbing system to ensure that the water is flowing in the correct direction and is not contaminated by any backflow of water or other substances. Backflow occurs when water from a non-potable source, such as a dirty drain or sewer, flows back into the clean water supply.

During a backflow test, a certified technician will typically check the backflow prevention device, such as a check valve or backflow preventer, to ensure that it is functioning properly and preventing any contaminants from entering the clean water supply. The technician will also measure the pressure of the water in the system to verify that it is within the recommended range.

Backflow tests are required by many municipalities and water authorities to ensure the safety and quality of the water supply. Failure to conduct a backflow test when required can result in fines or other penalties. It is important to have a licensed professional conduct a backflow test on a regular basis to ensure the continued safety of the water supply.