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Backflow Testing and Water Pressure Control in Lake Havasu City

We test and install backflow prevention devices and repair or replace pressure reducing valves to protect your plumbing and your water supply.

  • Annual Backflow Testing
  • PRV Install & Repair
  • 40+ Years of Service

Two Small Devices That Do a Big Job

Most people never think about the pressure reducing valve or the backflow preventer on their property until something goes wrong. Both protect you every day.

A pressure reducing valve, or PRV, keeps the water coming into your home or building at a safe, steady pressure. When a PRV fails or was never installed, high pressure strains every pipe, fitting, fixture, and appliance you own.

A backflow prevention device keeps used or contaminated water from flowing backward into the clean water supply. Many commercial properties, irrigation systems, and fire sprinkler systems are required to have one and to have it tested every year.

We install, test, and repair both, so your plumbing stays protected and your property stays in compliance.

Signs Your Water Pressure Is Too High

  • Pipes that bang or hammer when a faucet or appliance shuts off.
  • Toilets that run or refill on their own.
  • Dripping faucets and leaking fixtures that keep coming back.
  • A water heater relief valve that drips.
  • Water heaters, washing machines, and other appliances that wear out early.

Our Pressure and Backflow Services

  • Water Pressure Testing

    We test the incoming water line to measure your current pressure and find out whether you need PRV service.

  • Pressure Reducing Valve Installation, Repair, and Replacement

    We install new PRVs and repair or replace failing ones to bring your pressure back to a safe range and help prevent fixture damage.

  • Annual Backflow Testing and Inspection

    A master plumber performs the required annual test and inspection of your existing backflow device to confirm it is working and in compliance.

  • Certification Paperwork

    We provide the documentation, including municipal certification paperwork, confirming your system meets local code.

  • Backflow Device Installation and Repair

    We install new certified backflow prevention devices and repair existing ones to protect your water supply and meet code requirements.

  • An Upfront Price

    We explain what we find and confirm the upfront price before any repair or replacement work begins.

What Proper Pressure and Backflow Protection Does for You

  • Longer life for your pipes, water heater, and appliances.

  • Fewer leaks, drips, and running toilets caused by high pressure.

  • Quieter plumbing, without banging pipes.

  • Clean, safe drinking water protected from contamination.

  • Backflow testing done on time, with the paperwork your water provider requires.

Why Choose Craig Plumbing for Pressure and Backflow Work

  • A Master Plumber Handles Your Test

    Your annual backflow test and inspection are performed by a master plumber.

  • Paperwork Taken Care Of

    We provide the certification paperwork, so you have what you need for your water provider.

  • We Fix What the Pressure Damaged

    If high pressure has already caused leaks, worn-out fixtures, or a failing water heater, we repair those too. One company, one call.

  • Residential and Commercial

    We work with homeowners, property managers, and businesses, including commercial buildings that need regular backflow testing.

  • We Are a Licensed Master Plumbing Contractor

    We are licensed, bonded, and insured, with current licenses in Arizona, Nevada, and California.

Water Pressure in Our Area

Many neighborhoods here are built on hillsides, and water pressure can vary a lot from one street to the next. Homes in lower areas can see pressure well above what household plumbing is designed to handle, which is why a working PRV matters.

Our mineral-heavy water adds wear too. Scale can build up inside a PRV over time and keep it from regulating pressure the way it should. If your pressure has changed suddenly, or your fixtures have started leaking all at once, have the valve checked.

For businesses, irrigation systems, and properties with fire sprinklers, your water provider will usually send a notice when your annual backflow test is due. We can take care of the test and the paperwork.

Pressure and Backflow Service Across the Tri-State Area

We are based in Lake Havasu City and provide backflow testing, backflow device installation, and PRV service for homes and businesses across Mohave County, plus Laughlin, Nevada, and Needles, California.

2051 Holly Avenue, Lake Havasu City, AZ 86403

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  • Showed up right on time at 8 am. Did a complete re pipe of the whole house. Excellent work throughout! Complete site clean up after finishing. Both gents explained anything they did that they though I might not understand why. Completely finished and out the door by 4pm. If you want quality work at fair price Craig Plumbing is the place to call.

    Larry Evans Google review
  • We have used Craig Plumbing a few times for different services. They never disappoint. Noel replaced our water heater and fixed a leak under our sink today and Did a professional job. We even learned a few new things. This company is our go to!

    Mary Huebner Google review
  • Frank was awesome he found the leak and fixed it quickly even though it was the drain for the AC unit in attic. Thanks so much!

    Alice Hayes Google review
  • Jason was here before the scheduled time, which I'm not complaining about. He even completed the job before the scheduled time. He was very informative and honest!! Awesome experience and will definitely be using Craig Plumbing from now on!! Thank you so much!!!

    Martin Lopez Google review
  • Happy happy. Craig is everything I expect in a pro. Plans ahead, tries to have on hand what he might need and quick too. He'd be even quicker if I werent asking questions while he's working. Great job!

    Cheryl Samuelson Google review

Pressure and Backflow Questions

How much does backflow testing or PRV replacement cost?

Every plumbing job is different, so the price depends on the problem, the parts, and the work involved. We diagnose the problem, explain it clearly, and confirm an upfront repair price before we start.

What is backflow, and why does it matter?

Backflow happens when water flows the wrong way, from your property back into the public water supply. A pressure drop in the city line can pull water from an irrigation system, a boiler, or other equipment back into the drinking water. A backflow prevention device stops that from happening.

Who needs annual backflow testing?

Commercial properties, irrigation systems, fire sprinkler systems, and some homes are commonly required to have a backflow device tested every year. Your water provider sets the requirement and will usually let you know when a test is due.

What is a safe water pressure for a home?

Most homes work well somewhere between 40 and 80 psi. Many plumbing codes call for a pressure reducing valve when incoming pressure is above 80 psi. We can test your pressure and tell you where you stand.

How do I know if my pressure reducing valve is failing?

Watch for a sudden change in water pressure, banging pipes, running toilets, or several fixtures starting to leak at the same time. A pressure test shows whether the valve is still doing its job.

Do you provide the paperwork for my backflow test?

Yes. We provide the documentation, including municipal certification paperwork, confirming your system meets local code.

How do I schedule a backflow test or pressure check?

You can book service online any time through our Contact page, or call (928) 453-7173. Our office is open Monday through Friday, 7:00 AM to 4:00 PM. For plumbing emergencies, call us any time.

Protect Your Plumbing and Your Water

Whether your backflow test is due or your water pressure is too high, we can help. Book your service online, or call our office Monday through Friday, 7:00 AM to 4:00 PM. For a plumbing emergency, call (928) 453-7173 any time.