Plumber fixing pipes in commercial building
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.

Clear Pipes and Big Savings

$25 OFF

Drain Cleaning

This July!

Disclaimer: Offer Must Be Presented At Time of Sale. Offer Valid For $25 OFF Drain Cleaning Services ONLY. Cannot Be Combined With Other Offers. Discounts are for completed repairs Only. Discounts do not apply to dispatch fees. Some Exclusions Apply. Call Office For Details. Valid 7/1/2026-7/31/2026 Expires: Jul 31, 2026

Contact Us

Name(Required)

Frequently Asked Questions

Hear From Our Satisfied Customers

Very pleased with the thorough work by Drew Sanford! We had an issue with our central air that took some in depth investigation but Drew did not disappoint and made sure he got to the root of the problem. He was very professional and personable at the same time. So much appreciated and we highly recommended!
Tara Flodin
7 days ago
Garrett and Kyle were true professionals installing our brand new Heat a pump system.
Outstanding customer service, a clean install and very courteous individuals.
Great installation due to great HVAC TECHS.
LANDRY COMPANY should be proud of Harret and Kyle
Thomas Dunn
1 week ago
Garret and Kyle worked from 7:30 am - 6 pm installing a new HVAC system in 100+ degree weather. (Bad timing for the old system to die!) Many thanks to both of them for coming here to install the new system and make life comfortable for us in this sweltering heat.
Lisa Tomas
1 week ago
Aaron and Tory from Landry Mechanical were outstanding. We have a very old HVAC system, and they were able to quickly diagnose the issue and restore air conditioning to our home the very same day. They took the time to walk me through the diagnosis and clearly explained what was wrong and how they were going to fix it. They were professional, clean, efficient, and respectful of our home throughout the entire service call. I really appreciated their expertise and excellent customer service. I highly recommend Aaron, Tory, and the team at Landry Mechanical!
Ernie Granillo
1 week ago
After 25 years our AC needed replacement. Landry used a iPad app to determine the size of the system we needed (we had an undersized system previously which explains why our house never properly cooled down in the middle of summer). They were able to schedule an install the next week. Garret and Kyle did a great job. Super friendly, informative and professional! Couldn’t be happier.
Boris Tolpin
2 weeks ago
Fantastic service Our AC was not working on our 1st really hot day. Landry mechanical
Was going to squeeze us in if unable they set up an early morning house call .We got a call within an hour that they got us in .Rosie was our technician and she was amazing very pleasant and very professional.
I will be referring Anyone who needs anything done mechanically can rely on Landry.
GREAT SERVICE GREAT PRICES AND FOLLOW UP. I REALLY CAN'T SAY ENOUGH THANK YOU'S.
Craig Keevan
2 weeks ago
Sam and Nick did an excellent job for us. Very professional and friendly(and hilarious). Definitely knowledgeable and explained everything so we understood our options. Fair price for all the work involved. Went above and beyond to help us out. Definitely recommend. A+ service
Christine Brunelle
2 weeks ago
Great local company. They did a great job on our AC installation. Installation team was professional, courteous and competent.
Joe Fitzhenry
2 weeks ago
Our entire experience with Landry was excellent. We needed to replace our water heater. The office people started it off well by being friendly and helpful. They were very thorough in giving us our options in the quote. They got it done quickly and even simplified some of the pipe work from the previous set up. Looks great and works great! Very happy we used Landry!
Laura Petronino
3 weeks ago
Mine was just an annual tune up. Mr . Torres showed up well ahead of time and got the job done in no time. He took all my questions and proved himself to be very knowledgeable in what he does. The job is half done and the rest is expected to be done soon but i am fully satisfied and will be knocking on Landry’s door next year for another tune up, God willing!
John Jantuah
3 weeks ago
All needs were anticipated. Costs reflected what was discussed at first contact.
John Gaboury
3 weeks ago
Larry was informative , Great service! And a true Gentleman! I would definitely use Landry Mechanical plumbing again
Yvonne Whittemore
3 weeks ago
We had an outstanding experience from start to finish with Landry HVAC, plumbing and mechanical. Tim L. came out to assess our cooling needs and utilized a LiDAR scanner to ensure that our rooms were properly fitted with the right-sized mini-split units. He addressed every question we had, which set a wonderful tone and made us feel completely comfortable and confident in our decision to move forward with Landry.

Avah served as our dedicated point of contact, and both she and Tim provided prompt, kind, and clear communication throughout the entire process.

Gavin, our lead technician, did an incredible job and is truly a star in his role. He was professional, communicative, and thorough in explaining every step of the installation. We are very pleased with how Gavin and our second technician, Kyle, handled the units, wiring, covers, and the condenser. Gavin provided us with information on how to use, clean and maintain our new mini split units. They were incredibly respectful of our property and took great care to keep our home clean. Additionally, Don the electrician did fantastic work with the electrical components to ensure our system was running safely and smoothly.

This was truly the "dream team," and I cannot recommend Landry highly enough. We will certainly utilize them for all maintenance and future services for our home.
Mercedes Mateo
3 weeks ago
We had a great experience working with Landry. Mike the electrician served all our needs and was very knowledgeable and helpful installing our new lighting. We also had Randy and Jake help us with plumbing issues that involved replacing a toilet and replacing shower valves and where very satisfied with the work they did.
Dustin Pierce
3 weeks ago
We loved our multiple electrical installations by the professionals at Landry Mechanical. They are exceptional and really easy to work with. I'm looking for more projects to call them back to work on.
Terry Higgins
3 weeks ago
Competent, responsive, good value for money. Nice people.
John Mordes
4 weeks ago
Just had an electrical outlet replacement done and the technician Anthoney did a great job!
Dianne Heislein
4 weeks ago
Gavin and Kyle were remarkable! Gavin is extremely well spoken, and his customer service is exceptional. He walked us through every step, and ensured we were happy and satisfied with the results. We look forward to working with Landry again.
Jamie Sinnis
4 weeks ago
    Book Online in Minutes

    schedule service today

    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.