Rye's historic streets, waterfront estates, and landmarks like Playland and the Rye Golf Club sit on some of Westchester's most established properties — and New York State requires every backflow preventer on them to be tested annually by a certified tester. Whether your water comes via Westchester Joint Water Works or Veolia, Guardian Backflow Testing LLC delivers the full certified test for a $75 flat rate: testing, NYS certification paperwork, and filing with your supplier. One call, one visit, compliance handled — backed by 35+ years of experience and ABPA membership.