Backflow preventers protect the public water system from cross contamination by industry. They allow water flow only to the customer and prevent back siphoning. Backflows are required in every commercial application and on lawn irrigation and fire sprinkler systems. Backflows need to be tested and recertified each year by a N.C. State certified tester. Our state certified tester can test your backflow and repair or replace if necessary. A certification form is completed to verify that your backflow has been tested and repaired or replaced if needed. This information is forwarded to the county Public Works Dept. Our specialist will remind your business when testing is due again and provide the testing each year.