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Schools If Laughlin you would like your backflow tester training school listed on this page, please send for School Survey Form. Send LaRue your mailing address Hemet to Les O Brien at UF/TREEO. County or Black-Hawk State Albany STATE OF NEW YORK Cetified. County or State Albany STATE OF NEW YORK DEPARTMENT OF HEALTH BUREAU OF WATER SUPPLY PROTECTION Cetified Backflow Prevention Device Testers E. Clarion Blair, Jr. Sprinkler Systems and Backflow Prevention Backflow preventers are installed in the irrigation system to protect our drinking water, save lives and prevent illness. Sprinkler supplies shipped fast! Sprinkler.