What is Backflow?
A backflow is an undesirable reversal of flow of a liquid, gas or solid into the potable water supply.
A backflow preventer or backflow device protects the water system from backflow conditions.
A backflow tester tests backflow devices as often as the water supplier feels is appropriate. This is usually once a year.
To be certified in our area, a tester has to take a 40 hour class on backflow prevention. The tester must then pass a written and "hands on" test given by the American Backflow Prevention Association. Testers must re-certify every three years by passing the same series of tests. The tester's test equipment must be tested for calibration every year and adjusted as necessary. Also, like any small business, testers must comply with state, county, and local regulations.