Guardian Backflow Testing LLC
Guardian Backflow Testing LLC
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    • Home
    • Backflow Test Mamaroneck
    • Backflow Test Larchmont
    • Backflow Test Harrison NY
    • Backflow Sleepy Hollow
    • Backflow Mount Vernon
    • Backflow Test Tarrytown
    • Backflow Testing Yonkers
    • Backflow New Rochelle
    • Backflow Test Rye Brook
    • Backflow Test Ardsley NY
    • Backflow Test Chappaqua
    • Backflow Test Eastchester
    • Backflow Test Dobbs Ferry
    • Locally owned
    • Annual Backflow Test
    • $75 Backflow Testing
    • Veolia Backflow Testing
    • WJWW Backflow Test
    • Missed Required Test
    • Backflow Test Costs
    • Backflow Test Rye
    • White Plains Test
    • Port Chester Test
    • Backflow Scarsdale
    • Property Managers
    • Blog
    • Winter Services
    • Backflow Repairs
    • Emergency Backflow Test
    • Commercial Backflow Test
    • Why $75?
    • Serve & Served: $50 Tests

  • Home
  • Backflow Test Mamaroneck
  • Backflow Test Larchmont
  • Backflow Test Harrison NY
  • Backflow Sleepy Hollow
  • Backflow Mount Vernon
  • Backflow Test Tarrytown
  • Backflow Testing Yonkers
  • Backflow New Rochelle
  • Backflow Test Rye Brook
  • Backflow Test Ardsley NY
  • Backflow Test Chappaqua
  • Backflow Test Eastchester
  • Backflow Test Dobbs Ferry
  • Locally owned
  • Annual Backflow Test
  • $75 Backflow Testing
  • Veolia Backflow Testing
  • WJWW Backflow Test
  • Missed Required Test
  • Backflow Test Costs
  • Backflow Test Rye
  • White Plains Test
  • Port Chester Test
  • Backflow Scarsdale
  • Property Managers
  • Blog
  • Winter Services
  • Backflow Repairs
  • Emergency Backflow Test
  • Commercial Backflow Test
  • Why $75?
  • Serve & Served: $50 Tests
Guardian technician repairing a commercial backflow preventer in Westchester County NY

Backflow Preventer Repairs in Westchester County, NY

When your backflow preventer fails its annual test — or starts leaking, dripping constantly from the relief valve, or spraying water where it shouldn't — it needs repair by someone who knows these devices inside and out. Guardian Backflow Testing LLC repairs all major types of backflow preventers across Westchester County, NY: reduced pressure zone (RPZ) assemblies, double check valve assemblies, and pressure vacuum breakers, from 3/4-inch residential devices to large commercial assemblies.

Signs Your Backflow Preventer Needs Repair

Water dripping or spraying from the RPZ relief valve. A failed annual backflow test. Visible leaks at shutoff valves or test cocks. A device damaged by freezing over the winter. A notice from your water supplier about your device. If you notice any of these, don't wait. A leaking backflow preventer wastes water and can

Failed Your Annual Test? Don't Panic.

Most failed tests don't mean you need a new device. The majority of failures come down to worn internal parts — fouled check valves, tired springs, debris caught in the seats, aging rubber components. We diagnose the exact cause, repair it with quality parts, and retest the device so you get a passing report filed with

Why Guardian for Backflow Repairs

35+ years working on backflow preventers — Christopher is the technician other technicians call when they're stuck. A dedicated backflow specialist, not a plumber who does backflow on the side. Certified, licensed, and insured; proud member of the American Backflow Prevention Association. Honest diagnosis and a fair qu

Repair Pricing

Repairs aren't one-size-fits-all, so we don't pretend they are. Every device and every failure is different. Call or email for an honest, fair quote based on what's actually wrong — no surprises. Our $75 flat-rate annual test stays $75, and our lowest price guarantee stands behind our work.

Frequently Asked Questions

Can a failed backflow preventer be repaired, or does it have to be replaced? Most failed devices can be repaired. Worn check valves, springs, and seals are the usual culprits, and replacing those parts is far less expensive than a new assembly. We'll tell you honestly which one you need. How long does a backflow repair

Our Promise

Every job follows our company promise: we text you 10 minutes before arrival, we're on time if not early, we leave your home or business clean, and we communicate friendly, clear, and honest. Call (914) 240-4876 or visit newyorkbackflowtester.com.

  • Locally owned

Guardian Backflow Testing LLC

Larchmont, NY

914-240-4876

Copyright © 2026 Guardian Backflow Testing LLC. All Rights Reserved.

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