Backflow Testing and Prevention in Ansonia
Certified annual backflow testing, RPZ valve certification, and cross-connection inspection compliant with Aquarion and RWA standards.

Protecting the Public Water Supply from Cross-Connection
Backflow occurs when an unexpected pressure drop in the municipal water main (such as from a nearby fire hydrant opening or water main break) creates a hydraulic siphon effect. This negative pressure can draw non-potable liquids, chemical fertilizers from irrigation systems, or commercial boiler fluids backward into the clean drinking water distribution network.
To safeguard public health, the Connecticut Department of Public Health and local water authorities (Aquarion Water Company and the Regional Water Authority) mandate annual certified backflow testing on all commercial properties, multi-family residences with dedicated irrigation, and high-hazard plumbing fixtures.

Certified Reduced Pressure Zone (RPZ) and Double Check Testing
Our licensed backflow technicians utilize calibrated differential pressure gauges to conduct precise annual cross-connection surveys. We test Reduced Pressure Zone (RPZ) assemblies, Double Check Valve Assemblies (DCVA), and Pressure Vacuum Breakers (PVB).
We evaluate check valve closing tightness, measure relief valve differential opening points, and verify that the assembly discharges properly under backpressure or back-siphonage conditions.

Complete Compliance Documentation and Filing
Failing to submit certified annual backflow test reports can result in substantial municipal fines or service termination by the water company. Following each test, our team completes all official state and water utility compliance documentation, submitting test reports directly to Aquarion or RWA on your behalf.

Rapid Rebuild and Valve Repair Capabilities
If a backflow assembly fails inspection due to mineral fouling or worn internal springs and rubber discs, our technicians carry complete manufacturer rebuild kits on our service vehicles. We clean internal seats, replace rubber discs and relief valve diaphragms, and re-test the unit immediately, saving you from reinspection fees.

Cross-Connection Control and Backflow Hazard Science
Potable water systems can become contaminated when unexpected hydraulic pressure drops in the street main create back-siphonage. In commercial properties, multi-family residences, and irrigation systems, non-potable liquids can be drawn backward into the clean drinking water network.
Cross-connection control relies on mechanical backflow prevention assemblies—such as Reduced Pressure Zone (RPZ) devices and Double Check Valve Assemblies (DCVA)—that automatically vent contaminated liquids to the atmosphere if pressure drops.
Certified Annual Testing Procedures and State Reporting
Connecticut Department of Public Health regulations mandate that commercial and high-hazard backflow preventers undergo certified inspection annually. Our technicians utilize calibrated five-valve differential pressure gauges to measure check valve spring tension, relief valve opening thresholds, and internal disc seals.
We complete all required state compliance test forms, submit documentation directly to Aquarion Water Company and municipal health officials, and tag each backflow assembly with current certification stickers.
Differential Pressure Gauge Calibration and Test Reporting Procedures
Certified backflow testing requires specialized instrumentation. Our technicians operate calibrated five-valve differential pressure test kits certified annually by independent metrology laboratories to ensure precise differential pressure readings down to 0.1 PSI.
We measure the exact differential pressure across first and second check valves, verify that air inlet valves open before internal pressure drops below one PSI, and test relief valve discharge operation. Test reports are filed promptly with water utilities and municipal building officials.
Frequently Asked Questions: Backflow Testing
Commercial businesses, multi-family apartment buildings, commercial kitchens, medical offices, and residential properties with dedicated underground irrigation or fire suppression systems are required to conduct annual testing.
Need Fast Help with Backflow Testing?
Contact our licensed plumbers on Main Street in Ansonia. Immediate phone guidance and clear written estimates before work begins.
