TSBPE-licensed plumbers covering North Dallas since 1995, with over 150 years of combined experience and our own excavation crews.
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North Dallas is not its own city. It is a large piece of Dallas, which means the water arrives through Dallas Water Utilities, the permits come from Dallas, and the rules about what is buried in your yard are Dallas rules. Herndon McFarland Plumbing has worked these neighborhoods since 1995 from a shop on Billy Mitchell Drive in Addison, a few minutes up the Tollway from most of them.
Book your service online with Herndon McFarland Plumbing today.
Supply side work keeps us busiest here, so repiping and pressure problems lead the list. Licensed technicians on our payroll perform all of it.
Fixture work, pipe repair, and sewer inspection are covered too. Everything else is on the plumbing services page.
A letter from Dallas Water Utilities saying the material of your water service line is unknown is not a mistake. The federal Lead and Copper Rule was revised by the EPA in 2024, and it requires public water systems to build and maintain an inventory of service lines, the pipe connecting the water main to a building. Dallas Water Utilities has been assembling that inventory from plumbing codes, permits, old master plans, distribution maps, and inspection records, under a ten year clock to finish it and replace any lead or galvanized lines found.
Here is the part that matters at the property line. Dallas Water Utilities states that the property owner is responsible for the private side of the service line, covering the plumbing inside the premises and everything along the property coming from the meter. The utility keeps the public side and the meter. Yours begins there, so a private line listed as galvanized or unknown is a plumbing job, not a utility project.
Galvanized pipe is steel with a zinc coating, and once the coating fails the steel rusts from the inside out. The bore narrows a little every year, so the symptoms arrive slowly. Dallas Water Utilities offers free lead testing on request through 3-1-1, which is a reasonable first step when the material is listed as unknown.
Discolored Water on the First Draw
Rust sitting in the pipe overnight comes out ahead of the clear water behind it.
Pressure That Fell Over Years, Not Overnight
Sudden loss points at a valve or a break. Gradual loss means the inside of the pipe is closing up.
Upstairs Fixtures Starve When a Downstairs Tap Runs
Narrowed piping cannot feed two draws at once.
Repeat Pinhole Leaks
One is a repair. A second and third in the same house means the piping itself is finished.
The job stays with our own crews from diagnosis through final inspection.
Our about page covers the company, and offers are listed on coupons.
Whether you are holding a letter about your service line, chasing pressure that keeps slipping, or dealing with a drain that quit, we diagnose the cause before quoting the fix. Check our other service areas if you sit outside the district.
Dallas Water Utilities is building a service line inventory required by the EPA’s revised Lead and Copper Rule, and the rule requires notification of customers whose line material is recorded as unknown, lead, or galvanized. Unknown means the records reviewed so far do not confirm what the line is made of, not that lead was found. Dallas Water Utilities offers free lead testing on request through 3-1-1, and a plumber can identify the private side by exposing the line where it enters the house.
The property owner. Dallas Water Utilities maintains the public side and the meter, and states that the owner is responsible for the private side, which includes everything along the property coming from the meter plus the plumbing inside the premises. In practice, a leak between the meter and the foundation is a private repair, and replacing a galvanized or lead private line is arranged by the owner. We locate the line, confirm the material, and lay out the options.
North Dallas falls under the City of Dallas, so Dallas permit and inspection requirements apply. Small repairs such as swapping a faucet or clearing a stoppage generally do not require a permit. Water heater replacement, repiping, sewer and yard line replacement, gas piping alterations, and new fixture rough-in generally do, and the finished work has to pass inspection. We identify the requirement, pull the permit under our license, and stay with the job through inspection.
The quickest check is visual. Galvanized pipe is dull gray steel with threaded fittings and a magnet sticks to it, while copper is unmistakable and plastic supply lines are not metal at all. Look where piping is exposed, such as a garage wall, an attic run, or under a sink. Age is a clue but not proof, since many houses have been partly repiped over the years. We verify the material where the line enters the house.
Two causes are common. The first is restricted supply piping, where corrosion has narrowed the pipe so it cannot feed two fixtures at once. The second is a failing pressure reducing valve, which either lets pressure run high or throttles it as demand changes. Testing static and flowing pressure separates them, because a restriction only shows up under flow. We test first, since replacing a valve does nothing for a corroded line.
A hydrostatic test isolates the drain and sewer system, fills it with water, and watches whether the level holds. A drop means the system is leaking below the slab or out in the yard. It is a standard step during a real estate transaction on an older North Dallas home, after foundation movement, and when a leak is suspected but not located. Static isolation testing then narrows the failure to a branch so the repair is targeted.
From slab leaks under the foundation to sewer line repipes, every job is diagnosed, documented, and done right. A look at recent work across North Dallas.
Excellent customer service, very friendly staff from the person taking the call to the staff fixing the repairs. Very trustworthy company. Shaun explained the step-by-step process and provided very fair prices.
Their positive, upbeat, anxious-to-please attitude made the whole process the very best it could be! All of the employees were a pleasure to work with. I highly recommend Herndon McFarland.
Trent and Reggie were the most professional associates entering our home. They treated our home with respect as if it were theirs. We will use this company again because of them and our experience.
Mention these offers when you schedule. Cannot be combined; see details on each.
Our thank-you to seniors and active or retired military.
One-time use. Cannot be combined with any other coupon or offer. MENTION AT SCHEDULINGSave on any water slab leak repair or full reroute under your foundation.
Cannot be combined with any other offer or coupon. MENTION AT SCHEDULINGSave on any water heater replacement, tank or tankless.
Cannot be combined with any other offer or coupon. MENTION AT SCHEDULINGSave on any plumbing service call or faucet replacement.
One-time use. Cannot be combined with any other offer or coupon. MENTION AT SCHEDULING
