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Plumbing, Heating, Cooling & Electrical Experts

Backflow Prevention in Worcester, Middlesex & Norfolk Counties

Clean water is essential to every home, and keeping it safe starts with proper backflow prevention. At Landry Mechanical Inc Plumbing HVAC & Electric, we specialize in protecting your drinking water from contamination caused by pressure changes in your plumbing system. Our licensed professionals perform certified backflow testing in Millbury and beyond, ensuring your system meets local safety regulations and keeps your water supply secure.

Homeowners and businesses across the MetroWest and Blackstone Valley areas depend on our team for timely inspections, reliable repairs, and preventative solutions that keep their water systems safe and efficient. From residential properties to commercial facilities, we make water protection simple, effective, and worry-free. Call us or fill out our easy online form to schedule your appointment today.

backflow prevention pipes

What Is Backflow Prevention?

Backflow prevention protects your home’s water supply by stopping dirty or contaminated water from flowing backward into clean lines. When water pressure changes unexpectedly (such as during a pipe burst or heavy usage) it can cause pollutants to enter your drinking water. A backflow preventer keeps water moving in the right direction, protecting your family’s health and ensuring your system remains compliant with safety codes.

Backflow Services We Offer

At Landry Mechanical, we provide a complete selection of services designed to protect your water supply and maintain consistent system performance. Our technicians handle everything from new installations to annual inspections with precision and professionalism. With certified training and a commitment to quality, we make sure your backflow prevention system continues to safeguard your home or business year after year.

Backflow Installation

We install backflow prevention devices for both residential and commercial properties, ensuring clean water remains separate from potential contaminants. Each installation is customized to your property’s layout, water pressure, and usage needs. Our team follows all local and state regulations, providing a system that’s both compliant and built to last.

Backflow Repair and Replacement

If a test shows damage, wear, or improper valve function, our technicians provide expert repair or replacement. We use high-quality parts and industry-approved methods to restore your device’s performance and reliability. Whether it’s a small component repair or a full replacement, we ensure your water system remains protected from contamination risks.

Maintenance

Routine inspections and maintenance keep your system compliant and efficient year-round. Our technicians clean components, and replace worn parts before they lead to failure. We also provide convenient scheduling reminders, so you never miss an annual inspection required by local codes.

Need fast help with plumbing, heating, AC, or electrical? Call or schedule service today!

Homeowners Trust Landry Mechanical

When it comes to protecting your home’s water supply, precision and experience matter. Homeowners rely on Landry Mechanical because we approach every project with care, attention to detail, and a deep understanding of local plumbing systems. Our focus on quality service and long-term safety has made us a trusted name for backflow prevention and other essential water protection solutions.

  • Certified specialists: Our licensed professionals are trained to install and maintain backflow devices in full compliance with state and local regulations.
  • Thorough inspections: We take the time to evaluate your entire water system to catch potential pressure or connection issues before they cause contamination.
  • Reliable documentation: After every service, we provide detailed reports to verify compliance and system performance for homeowners and inspectors.
  • Plumbing expertise: With decades of hands-on experience, our technicians understand how backflow devices integrate with larger plumbing networks for complete protection.
  • Customer-first care: From scheduling to final inspection, we communicate clearly, arrive on time, and leave your property as clean as we found it.

Protect Your Water Supply Today

Don’t wait until a backflow issue threatens your water quality. Schedule your backflow prevention service with Landry Mechanical today and let our experts ensure your system is fully protected. Check out our customer reviews to see why homeowners across Worcester, Middlesex & Norfolk Counties  count on us for dependable, detail-oriented service.

Summer Ready Drain Special

$99

Drain Cleaning

This May Thru June!

Disclaimer: Offer Must Be Presented at Time of Sale. Offer Valid For Drain Cleaning Service ONLY. Cannot Be Combined With Other Offers. Some Exclusions Apply. Offer Valid May 1st, 2026-June 30th, 2026. Call Office For Details. Expires: June 30, 2026

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Hear From Our Satisfied Customers

From the sales team (Tim) to the installation team (Keith, Zach, and many more) these folks have done an outstanding job removing our old system and installing a new full HVAC system. Everyone has been professional and thorough in their work and very easy to deal with from start to finish. Thanks so much!
Sam McCormick
2 days ago
Excellent response and prompt on time repair of my garage heater.
Michael Costa
2 days ago
All needs were anticipated. Costs reflected what was discussed at first contact.
John Gaboury
3 days ago
I was very impressed with the professionalism, knowledge, kindness and class that was shown by my install team, Gavin and Kyle. They explained everything and answered all of our questions. They showed respect for my space and cleaned up the area very well. The units also look great! Very good experience with Landry overall so far!
Katie Savage
3 days ago
Technician was very professional and knowledgeable. He was extremely thorough when discussing issues with service.
Susan Genereux
3 days ago
Everything is seamless: Text message when they’re arriving; Instant electronic billing when they’re done. All work is guaranteed. Technicians are uniformly knowledgeable.
Klaus Shigley
3 days ago
One of our best experiences with any company. Garret, Gaven, Julian, Don, Demitri, Kyle and Ian were beyond professional, respectful, courteous on top of knowing their stuff! Made sure all our questions were answered and our knowledge of how the units worked Big job, scheduled quickly and completed in 1 1/2 days! I would recommend your company, especially the guys mentioned above to anyone/everyone. Outstanding customer service!
Diane Dwyer
4 days ago
Very pleased - highly recommend!
Ellen Deutsch
6 days ago
Sammy is GREAT!! Cleaning was recommended and boy did it work — on my split duct system
Alyssa Goodman
6 days ago
Gavin and Kyle installed a new AC unit yesterday and did a great job. Very friendly and knowledgeable. Greatly appreciate them being here during a very hot 2 days.
Mary Ann Keyser
1 week ago
They did an amazing job replacing my ac system. My mom came home on hospice on a Wednesday. And my central air died that same day. Called them and they came right out Thursday morning to diagnose the problem. Tuesday the following week they were here bright and early. They finished up the install Wednesday. They were professional, neat clean and prompt. I highly recommend them!
Erik Stenquist
1 week ago
I had a scheduled annual check up of my furnace, which was installed around nine years ago. Corey was very nice. Let me know everything was fine. Gave me a couple of optional upgrades. If I was interested Landry get me informed as to when Cory would be showing up. I like the fact that they are certified employees. Great company. UPDATE. My annual furnace update again by Joe and again had a wonderful experience with Landry He was very thorough explained everything no pressure to take his suggestions which I know I will do just not at this moment. I do appreciate the staff and the service that I get from Lang.
Valerie Meadows
2 weeks ago
Fast, courteous, great service. Thank you
David Wojcik
2 weeks ago
I was very pleased with everyone involved in the project. Garrett was especially helpful, thorough and pleasant. Landry is lucky to have him as an employee.
Lois Benotti
2 weeks ago
Clean, respectful, responsive, polite and knowledgeable. Now a days these qualities are scarce and not to be taken lightly because the competition costs as much (or more) and they will trash your house and talk to you down when you ask for a description of the problem… I only say this because it was part of my personal experience with a different company and it was very discouraging.
Yahenys Dominguez
2 weeks ago
Your guys were very professional and explained everything in detail. Snaking a drain can be very messy but they keep everything clean and organized.
Sheila Gravelle
2 weeks ago
Responded in one day (without being subscription member). Kyle reported on time and was polite, professional, and courteous. We are now subscribed customers.
Richard Dumas
2 weeks ago
It was a very pleasant experience ! The technicians were very knowledgeable and fair ! Thank u
Linda Shack
2 weeks ago
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    When you need AC, heating, plumbing, or electrical repairs and replacements, call Landry Mechanical Inc Plumbing HVAC & Electric or book online for appointments in Millbury, MA, and throughout Worcester, Middlesex, and Norfolk Counties.