TSBPE-licensed plumbers covering Lewisville, from a dripping angle stop to a sewer line under the driveway. Permits pulled, labor guaranteed.
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The water in a Lewisville tap starts in Lewisville Lake, gets treated at the city’s own plant, and arrives at the house with a disinfectant residual still in it. That is normal, and it is also hard on the rubber parts inside your fixtures over time. Herndon McFarland Plumbing has worked across the Dallas area since 1995, and our team carries over 150 years of combined plumbing experience into houses on both the old streets and the new ones.
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Lewisville sends us small repairs and full excavations in the same week, and we kept the trade wide enough to take both. Everything below is listed in detail on our plumbing services page.
No part of that list gets handed off. Our licensed technicians do the work, which is what lets us stand behind it in writing.
The city’s water treatment process page walks through it step by step. Water is pumped out of Lewisville Lake to the plant. Ferric sulfate, lime, polymer, chlorine, and ammonia go in. Solids settle out, the water passes through 44 inches of anthracite coal, and small amounts of chlorine and ammonia stay in it to keep it safe as it travels through the distribution lines to your house.
That last step is the one plumbers care about. Chlorine combined with ammonia makes a disinfectant that holds up over long distances, which is exactly why the city uses it and exactly why it is rough on rubber. Flappers stiffen and stop sealing. Washers inside angle stops and faucet cartridges harden. Older rubber supply lines go brittle at the ends, where you cannot see them until they let go.
None of that is a reason to distrust the water. It is a reason to treat those parts as consumables. When we are already under a sink or behind a toilet in a Lewisville house, we replace the supply line and the flapper rather than put a worn part back in service. A running toilet is usually a small piece of rubber that quit, and it can waste more water in a month than a visible drip does in a year.
The same page notes that activated carbon goes in during the summer months to control taste and odor. If your water tastes different in July, you are not imagining it, and that is a filtration question rather than a repair.
Older streets and newer subdivisions bring different plumbing problems, and a crew that only knows one of them will guess at the other.
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Tell us what you are seeing and when it started, and we will find the cause before quoting the fix. Drains, gas, water heaters, leaks, and sewer lines all stay with our licensed crews from diagnosis through the final inspection.
Book your service online with Herndon McFarland Plumbing.
Lewisville pumps raw water from Lewisville Lake to its own treatment plant, where it is settled, filtered, and disinfected before entering the distribution system. Chlorine and ammonia are left in the water so it stays safe on the way to your house. That residual is doing its job, and it also shortens the life of rubber components in toilets, angle stops, faucet cartridges, and older flexible supply lines. Treating those parts as wear items instead of permanent fittings prevents most of the small leaks we get called out for.
It depends on what the job touches. Clearing a stoppage or swapping a faucet washer is not permitted work. Replacing a water heater, repiping, altering gas piping, replacing a sewer line, or adding fixtures typically requires a permit and inspection through the City of Lewisville. We determine the requirement before the job starts and handle the paperwork and the inspection when it applies, so what is in the walls and under the slab matches what the city has on record.
Almost always a flapper that has lost its seal. The rubber hardens, the seat picks up mineral film, and the flapper no longer drops flat, so water trickles past until the fill valve kicks on again. A fill valve set too high or a cracked overflow tube can do the same thing. Put a little food coloring in the tank, wait without flushing, and if color appears in the bowl the flapper is leaking by. It is a small repair that stops a real amount of waste.
Repair makes sense when the failure is a replaceable part: a thermostat, heating element, thermocouple, gas control valve, anode rod, or relief valve. Replacement is the better call when the tank itself is leaking, the shell is heavily corroded, or the unit keeps failing in different ways as it reaches the end of its service life. We inspect the unit, identify what actually failed, and explain the difference in what each path buys you before you decide.
Not every house does. Homes with a below grade area, a crawl space that holds water, a yard that drains toward the foundation, or a history of standing water after heavy rain are the candidates. A sump pump gives that water a controlled path out instead of letting it sit against the structure. If you already have one, test it before storm season by pouring water into the pit and confirming the float trips and the discharge runs clear of the house.
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
