Master Plumber License: M43276

Backflow Services

Trusted & Google-Certified Plumbing Experts in Galveston, TX

Protecting Your Water Supply with Expert Backflow Services

Preventing backflow is essential for protecting your property’s water quality and keeping drinking water safe. At Galveston Plumbing, we specialize in backflow device installation, annual testing, and repair services. Our certified backflow technicians help homes, businesses, and commercial properties in Galveston stay compliant, safe, and sanitary.

Backflow occurs when water flows in reverse — potentially allowing contaminants to enter your potable water supply. Whether it’s caused by a sudden drop in water pressure or a rise in downstream pressure, the risk is real. That’s why having the right backflow prevention device correctly installed and tested is so important.

What We Offer :

Notes :

Backflow prevention is not just a “nice to have” — in many areas, it’s required by local plumbing codes or water utility regulations. Regular testing (annual or more frequently) is crucial to ensure the device works correctly, especially in critical systems or commercial properties.

Certified Plumbing Services In Galveston

From emergency repairs to full plumbing installations, our certified experts deliver dependable, fast, and high-quality service for every home.

Why Choose Galveston Plumbing?

  • Certified Backflow Experts: Our team is fully trained and certified to install, test, and maintain backflow prevention devices.

  • Regulatory Compliance: We understand Texas and Galveston water regulations, ensuring your system meets local code requirements.

  • Reliable & Thorough: From cross-connection inspections to device certification — we handle the full backflow prevention lifecycle.

  • Preventive Maintenance: Regular maintenance helps avoid contamination risks and expensive backups.

  • Fast & Efficient Service: We work with minimal disruption, using proven tools and techniques to finish jobs promptly.

Your plumbing problem becomes our priority — and we fix it with care, skill, and integrity.

What Our Customer Say

At Galveston Plumbing, customer satisfaction is at the heart of everything we do. Our clients appreciate our honesty, quick response, and high-quality workmanship — and their words speak for themselves.

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Jim Herndon
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Great experience! Jimmy did an awesome job and was very cordial and fair.
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Damon Thomas profile picture
Damon Thomas
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Came out to Bolivar on a Saturday. Jimmy was professional and helpful.
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Justin Thomas profile picture
Justin Thomas
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Came out on a Saturday and got us fixed up quickly.
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Bobby Strahan profile picture
Bobby Strahan
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Amazing service and very quick to respond on a Saturday morning. Jimmy went above and beyond to diagnose and fix my septic issues. Would definitely recommend.
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Krishana Lynn Matthews profile picture
Krishana Lynn Matthews
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Shitters no longer full, Clark.
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John Billings profile picture
John Billings
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Great, fast, and reasonably priced service on the island.
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Cody Tucker profile picture
Cody Tucker
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Excellent service! The Lanhams arrived within an hour of my initial call for a busted pipe. The plumber quickly diagnosed the source of the leak and fixed the problem. Everything was cleaned up well no trash left behind. The guys were very friendly throughout. Highly recommend for prompt, professional service.
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Autumn Johnson
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Absolutely an amazing service experience. Professional and quick to respond to the service request - within 24 hrs called me. They were booked for the week, but had a cancellation and were able to come out the same day. Even though my service request was an insurance claim, and we weren’t sure if the repairs would be covered, the owner of Lanham’s got right to work and quickly resolved the issues with my shower and toilets. He not only showed amazing customer service, but treated me with kindness and told me he would take great care whether the insurance covered the services or not. He went above and beyond and was in and out in less than 40 minutes. Everything works great now. Highly recommended Lanham’s for all of the Galveston county area. 🌟🌟🌟🌟🌟
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Selected Questions

Frequently Asked Questions

Backflow is when water or liquid flows backwards into the clean water supply, threatening contamination.

Two main causes: back-siphonage (when water pressure drops) and backpressure (when downstream pressure is higher).

We install devices like Reduced Pressure Zone (RPZ) assemblies, Double Check Valve Assemblies (DCVA), Pressure Vacuum Breakers (PVB), and atmospheric vacuum breakers.

Most utilities require annual testing, but the frequency may vary depending on risk factors.

Yes — especially if there's a cross-connection like an irrigation system, pool, or boiler. It may also be mandated by local plumbing codes.

No. Backflow devices must be tested by certified testers using specialized equipment to ensure compliance.

We’re certified, experienced, and familiar with local regulations — plus we offer full service (install, test, repair).

Testing usually takes 30–60 minutes, depending on the type and number of devices.

We can repair or replace faulty parts, clean internal components, or replace the device altogether — then retest for compliance.

Yes. These devices prevent water contamination and reduce water waste, helping protect both health and the environment.