Backflow Testing & Repair in Cleveland, OH

Protect Your Home and Water Supply with Certified Backflow Services

If you're facing issues with contaminated water, strange smells from your fixtures, or rising water in your sinks or bathtubs, backflow may be the cause. At Northlake Plumbing, we provide professional backflow testing, prevention, and repair services throughout Cleveland and Northeast Ohio, ensuring your water supply remains clean, safe, and compliant with local regulations.


What Is Backflow—and Why Is It So Dangerous?

Backflow occurs when the normal direction of water flow is reversed, allowing dirty or contaminated water to enter your clean water supply. This can happen due to sudden changes in water pressure—such as during a burst pipe or heavy system usage.

Backflow can lead to:

  • Contaminated drinking water
  • Health risks from exposure to bacteria and sewage
  • Unpleasant odors and discoloration in water
  • Sewage backup in toilets, sinks, and bathtubs

The CDC reports thousands of waterborne illness cases annually due to backflow incidents. At Northlake Plumbing, we treat any signs of backflow as urgent—and we act fast to resolve them.


Fast, Certified Backflow Repair in Cleveland

Our licensed plumbers are fully certified to perform backflow prevention installation, testing, and repair in compliance with Ohio plumbing code. Whether you’re dealing with an emergency or need routine annual testing, we’ve got you covered.

We provide:

  • Same-day backflow repair for emergencies
  • Certified testing and reporting to meet city and state requirements
  • Installation of modern backflow prevention devices
  • System inspections for fire suppression and irrigation systems
  • Testing of check valves, relief valves, and shutoff points

We also handle the paperwork if your municipality requires documentation for compliance.


Do You Need a Backflow Prevention Device?

Ohio law requires backflow prevention devices for many properties—especially those with:

  • Irrigation systems
  • Fire sprinkler systems
  • Boilers or radiant heating
  • Commercial operations
  • Older plumbing prone to pressure drops

If your Cleveland property doesn’t already have one—or if your device hasn’t been tested recently—it’s time to schedule an inspection.


What’s Included in Our Backflow Testing?

Our backflow testing process is thorough and precise:

  1. Shut off the main water supply to isolate the system.
  2. Identify and inspect all backflow prevention devices.
  3. Check test cocks and valves for proper function.
  4. Use calibrated testing kits to verify water flow direction and pressure.
  5. Clean and service valves if signs of leakage or failure are detected.
  6. Document and report results for homeowner records and municipal compliance.

We offer flat-rate pricing with no hidden fees, so you know exactly what to expect.

Why Choose Northlake Plumbing?


Homeowners across Greater Cleveland turn to Northlake Plumbing for one simple reason - we deliver. From the moment you call, we prioritize your safety, comfort, and satisfaction. Here's what sets us apart:

Licensed, experienced plumbers
Upfront, honest pricing
Award-winning customer service
On-time arrival—every time

We’re proud to be one of the most trusted plumbing companies in Northeast Ohio, serving homes throughout Cleveland and surrounding communities.

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Service Area


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  • Beachwood
  • Brunswick
  • Chagrin Falls
  • Chardon
  • Cleveland
  • Eastlake
  • Elyria
  • Euclid
  • Hudson
  • Lakewood
  • Madison
  • Mayfield Heights
  • Mentor
  • Middlefield
  • North Canton
  • Painesville
  • Parma
  • Solon
  • Strongsville
  • Twinsburg
  • Wickliffe
  • Willoughby
  • Willowick