Port Chester's North Main Street restaurant row is one of Westchester's great food destinations — and every restaurant kitchen hides backflow preventers on soda carbonators, espresso machines, and dishwashers that New York State requires tested annually by a certified tester. The village's dense downtown of shops, apartments, and commercial buildings needs the same yearly compliance. Guardian Backflow Testing LLC handles all of it for a $75 flat rate: certified testing, NYS paperwork, and filing with Veolia Water New York. Food-service specialists, 35+ years of experience, ABPA member — scheduled around your business hours.