- BBB A+ Rated
- Mesquite Chamber of Commerce Member
- 30+ Years Experience
Plumber in Midlothian, TX
Midlothian homes keep getting bigger, and so do their plumbing projects: a gas line for the outdoor kitchen, a second water heater, a leak somewhere along a long run of yard line. Those jobs deserve a Master Plumber, a proper diagnosis and one flat price in writing.
James Armstrong Plumbing has served the Dallas area since 1995. James Armstrong holds Texas Master Plumber License M-39428 with a gas endorsement, and the company has been BBB A+ accredited since 2018.
Call 214-918-6109. Monday to Friday.
Licensed Master Plumber
License #M39428
The “Armstrong Clean Promise"
No mess, no stress — that's our guarantee.
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Our Services
Comprehensive Plumbing Solutions for Homes & Businesses in Midlothian
Most Requested 
Plumbing Repairs and Installation
Get fast help from a trusted plumber in the DFW for leaks, fixture installs, and upgrades. We restore your plumbing with smooth, reliable work.
Water Heater Services
From quick fixes to full replacements, our water heater services in Dallas-Fort Worth, keep your hot water steady. We work on all standard and tankless models.
Most Requested 
Drain Cleaning Services
Stubborn clogs disappear with our drain-cleaning solutions in Texas. We clear the buildup fully so your drains flow the way they should.
Sewer Line Plumbing
Our team handles sewer line plumbing in the DFW , with careful inspection and precise repairs. We keep wastewater moving safely away from your home.
Gas Line Plumbing
Safe and reliable gas line plumbing in the DFW, is just a call away. Whether it’s a leak, repair, or new line, we follow strict safety standards.
Emergency Service
Emergency Service — Available 24/7
Burst pipe? Major leak? Don’t wait. Our emergency team serves the entire DFW area around the clock.
Technician available now
Why Choose Us
Why DFW Homeowners Choose James Armstrong Plumbing
Licensed & Certified Technicians
Our plumbers are fully licensed, professionally trained, and committed to delivering quality workmanship that meets today’s industry standards.
Transparent, Upfront Pricing
No hidden fees and no surprises. Just clear, honest pricing you can trust before we begin any repair or installation.
Fast & Friendly Service
We respect your time. Our technicians arrive promptly, work efficiently, and treat you and your home with courtesy and care.
The Armstrong Clean Promise
Floor protection, shoe covers, and a meticulous cleanup on every job. If your home isn’t cleaner than we found it, we pay for the cleaning.
5-Star Rated by Homeowners Like You
Local families choose us for reliable plumbing and friendly service. Your comfort, safety, and satisfaction are the reasons we do what we do.
Emergency Response Available
Afterhours emergency calls accepted. Call (214) 918-6109.
Midlothian's Ground and What It Does to Plumbing
Midlothian is known as the Cement Capital of Texas because of the limestone under Ellis County. Above the rock sits Blackland Prairie clay, a highly expansive soil. It swells when wet and shrinks hard in a dry summer.
That movement is behind the problems we see most here:
- Slab leaks, where lines under the foundation are stressed until a joint or fitting gives way
- Sewer line separations and bellies, where a section of drain line sinks and holds water and waste
- Yard line breaks, especially where the service line enters the house and the ground moves differently on either side of the foundation
Older homes near historic downtown Midlothian add original cast iron drains and, in some, galvanized supply pipe to that list. Newer homes along the US-287 and US-67 corridors are mostly PEX, which tolerates movement better, but their fittings, yard lines and sewer lines still move with the clay.
Permits Inside and Outside Midlothian City Limits
Inside city limits, the City of Midlothian generally requires a permit and inspection for gas line work, water heater replacement, repiping, sewer line replacement and moving fixtures. Gas lines for outdoor kitchens and pool heaters are exactly the kind of work an inspection should see.
Many homes with a Midlothian address sit outside city limits in unincorporated Ellis County, where the rules can be different. Confirm which applies to your address, and the current requirements, before work begins.
Meet James Armstrong
Meet the Master Plumber Serving Midlothian: James Armstrong
James Armstrong has been a Mesquite-resident Master Plumber since 1995. What began as helping neighbors fix leaky faucets turned into a career — and eventually a family business, built on one simple rule: treat people right, do the job with integrity, and always stand behind your work. Today, James and his crew serve Midlothian, Sachse, Garland, and the broader DFW metro from the Mesquite headquarters at 844 Dalworth Dr.
“In thirty years of plumbing across the DFW metro, including Midlothian, the drain calls almost always come down to two things: tree roots in the older neighborhoods, and grease and hair buildup in the newer developments. We camera-inspect first, then choose hydro-jetting or snaking based on what we actually see — not on what gets you to the highest invoice.”
James Armstrong, Master Plumber • Texas License M-39428 • Founder, James Armstrong Plumbing
Every job comes with the Armstrong Clean Promise — we leave your home cleaner than we found it, guaranteed. No excuses, no mess, no shortcuts. It’s the kind of commitment that’s earned us thousands of repeat customers and a reputation across the DFW metroplex for honest, reliable work.
Emergency Calls Accepted After Hours & Weekends as well.
Our Process
What to Expect When You Call
Call or Book Online
Speak with a real person, not a call center. We schedule at your convenience.
Same-Day Inspection
A licensed plumber evaluates your issue on-site. No guesswork.
Upfront Quote
You approve the price before work begins. The number you see is final.
Clean, Expert Work
Armstrong Clean Promise — we leave your home better than we found it.
Follow-Up Guarantee
We check in within 24 hours and follow up to ensure everything holds.
No hassle estimate · No obligation · Real person answers
Service Areas
Serving Communities Across Dallas-Fort Worth
- Allen
- Anna
- Arlington
- Azle
- Balch Springs
- Bedford
- Benbrook
- Blue Mound
- Blue Ridge
- Burleson
- Celina
- Colleyville
- Combine
- Dallas
- Everman
- Fairview
- Farmersville
- Flower Mound
- Forest Hill
- Fort Worth
- Frisco
- Garland
- Grand Prairie
- Plano
- Richardson
- Rowlett
- Sunnyvale
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How to Winterize Your Plumbing in North Texas
Hydro Jetting vs Snaking a Commercial Drain: Which One, and When
FAQ
Plumber in Midlothian, TX: Frequently Asked Questions
Have questions? We’ve got answers. Can’t find what you’re looking for? Give us a call anytime.
Yes. We install and pressure test gas lines for outdoor kitchens, fire pits, pool heaters, generators and appliances under a Texas gas endorsement, and quote the job flat in writing. Gas line work generally requires a permit and inspection inside Midlothian city limits.
Turn off every fixture and watch the water meter. If it moves, close the main shutoff at the house. If the meter keeps moving, the leak is on the service line in the yard. If it stops, the leak is inside the house or under the slab, and electronic leak detection runs $300 to $500.
It is worth doing. Many builder warranties cover plumbing systems for a limited period, often two years, so check your paperwork for the exact term. A Master Plumber can look for drain, leak, water heater and gas connection problems and give you a written description to take to your builder.
Midlothian sits on Blackland Prairie clay over limestone, and that clay swells when wet and shrinks in dry weather. The movement stresses water lines under the foundation and can separate or sag sewer lines. A sewer camera inspection runs $150 to $400.
Our shop is in Mesquite, about 45 minutes away, and we work Monday to Friday. For a burst pipe or active flooding, shut off the main water valve and call a plumber in Midlothian who can arrive sooner. We are the better call for planned projects and repairs you can schedule.
Inside city limits, gas line work, water heater replacement, repiping, sewer line replacement and moving fixtures generally require a permit from the City of Midlothian. Addresses in unincorporated Ellis County can have different rules. Confirm with the city or county before work begins. This is general information, not legal advice.