A new tankless water heater, installed by a licensed plumber.
Mention Monty the Mole
Drain and Sewer Services in Flower Mound, TX
A new tankless water heater, installed by a licensed plumber.
Mention Monty the Mole
A sink that empties slowly is annoying. A main sewer line backing up into your shower is a different situation entirely. Molberg Plumbing handles both ends of that range for Flower Mound homeowners, plus everything in between, from a kitchen line packed with hardened grease to a sewer main that has pulled apart underground.
Our licensed plumbers find the actual problem, walk you through what we found, and fix it correctly the first time. That’s what plumbing with probity looks like on a service call.
Every service Molberg runs in Flower Mound, on one list. Not sure which? Call it in and describe what it is doing.
From routine repairs to emergencies, Molberg Plumbing is ready to help.
Call 817-475-2800
Sewer trouble rarely shows up all at once. It builds quietly, then announces itself at the worst possible moment. Call Molberg Plumbing if you notice any of these:

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David is a top notch plumber! He is very knowledgeable, professional and explained everything to our understanding. He took care of our clogged drain. Very personable and showed up on time. Highly recommend Molberg Plumbing!!
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Drain lines collect residue for years before anyone notices a problem. Cooking grease cools and hardens against the pipe wall. Hair binds with soap scum. Food particles settle into the low spots. Eventually the opening narrows enough that water starts standing in the sink, and by that point the buildup usually coats the full interior of the line.
Store-bought chemical cleaners tend to open a small channel through the blockage and leave the rest behind, which is why those drains clog again within a month or two. The harsher products can also go to work on older pipe joints while they’re down there.
Our plumbers clear drains with professional cabling and jetting equipment that scours the pipe instead of poking a hole through the clog. Kitchen, bath, laundry, floor drains, we handle all of them. If we spot something upstream worth knowing about while we’re in the line, we’ll tell you about it rather than leaving it for the next company to find.
Your main sewer line carries waste from the entire house out to the city connection, so when it starts losing capacity, every fixture feels it. Buildup accumulates gradually, often across several years, restricting flow long before a full backup happens.
Routine sewer cleaning keeps that line open and gives us a chance to catch developing issues early. For Flower Mound homes with mature trees along the line or plumbing that’s been in the ground since the nineties, it’s one of the more practical maintenance items on the list.
Before we run any equipment, we look at what’s actually happening inside the pipe, explain the findings, and get your approval. You won’t get a bill from us for work you didn’t agree to.
When cabling can’t fully restore a line, hydro jetting usually can. The process sends water through a specialized nozzle at high pressure, stripping grease, soap buildup, mineral scale, and fine root hairs off the pipe walls and flushing the debris completely out of the system.
The difference matters. Cabling punches through a blockage. Jetting cleans the pipe back toward its original diameter, which means the line stays open much longer.
Hydro jetting works in most pipe materials, uses nothing but water, and is a strong option for homes dealing with repeat clogs, heavy kitchen use, or a sewer line that has been cabled more than once in the past year. We inspect first to confirm the pipe is a good candidate, since a badly deteriorated line needs repair rather than cleaning.

Not every sewer problem gets the same fix. Here’s what we run into most often around Flower Mound and the surrounding Denton County neighborhoods:
Soil is the biggest factor. Flower Mound sits on expansive clay that swells when we finally get rain and contracts hard through a Texas summer. That movement never stops, and over enough seasons it pulls joints apart, cracks older pipe, and drops sections of line into low spots where waste pools instead of flowing.
Tree roots are the second half of the story. Once shifting soil opens a gap anywhere in the line, roots from nearby trees find the vapor escaping through it within a season or two. A root thread thin enough to slip through a hairline crack can grow into a mass thick enough to stop a main line within a few years.
Other contributors we see regularly:
Identifying the cause changes the recommendation. Roots in an otherwise solid pipe get handled very differently than a line with a twelve foot belly in it, and we want you to understand that difference before you spend money.
When the pipe itself is damaged, cleaning is a temporary measure at best. Every sewer repair we perform starts with a camera inspection so we can see the condition of the line, confirm the depth, and mark the exact location of the failure before anyone picks up a shovel.
From there we lay out the options, including trenchless repair where the line qualifies. Molberg Plumbing is Picote Solutions certified, so we can restore many damaged sewer lines with minimal digging and far less disruption to driveways, landscaping, and patios. You get a clear scope and a clear price, and we don’t start until you tell us to.
Some lines are past saving. Widespread root damage, a collapsed section, or decades-old pipe deteriorating along its full length all point toward replacement rather than another repair.
When that’s the right call, we handle the whole project: permits, careful excavation, quality pipe and fittings, correct slope, code-compliant installation, and testing before we call it finished. We keep the dig footprint as tight as the site allows and put your yard back together when the work is done.

Monty digs a straight line from your call to a working pipe.
Reach us 24/7. A real person answers, and same-day slots are on the table for most projects.
We diagnose the real problem, walk you through the options, and put the price on paper first.
Repairs usually happen on the spot. Bigger jobs get scheduled around you, and every job is backed by our workmanship warranty.
One slow fixture usually points to a localized clog in that branch line. When several drains act up at once, when you smell sewage indoors, or when running the washer makes a tub gurgle, the main line is the more likely culprit. A camera inspection settles the question quickly and shows us exactly where to focus.
Usually. Mechanical root cutting and hydro jetting remove the intrusion, and a trenchless liner can seal the entry point so roots can’t return through that joint. Digging only becomes necessary when the pipe has structural damage severe enough that a liner won’t hold.
Homes with mature trees over the line or original cast iron benefit from a cleaning every year or two. Newer homes on PVC with no tree pressure can often go much longer. We’d rather look at your line and give you an honest interval than sell you a schedule you don’t need.
If you’re buying a home, absolutely. A camera scope before closing on a Flower Mound property with an older sewer line can save you from inheriting a five-figure repair. For a home you already own, it’s most useful if you’ve had repeat clogs or you know there are large trees along the line.
Coverage varies widely and often depends on whether the failure was sudden or gradual. Many policies exclude wear and tear, which is how most sewer line deterioration gets classified. Check with your carrier, and we’re glad to provide documentation and camera footage for a claim.
Keep grease out of the kitchen sink, use strainers in the tub and shower, and treat anything labeled flushable as though it isn’t. Those three habits prevent a surprising share of the clogs we get called out for.
Water heaters, repipes and sewer lines don’t wait for a good month. Get the price on paper first, then pay it off over time.
12 months
No interest if paid in full*
Also 6 and 15 months, or fixed-rate plans up to 180 months. On qualifying work through GreenSky.
See Financing Plans2 years
VIP workmanship warranty
Extended coverage on installs and replacements with Molberg-supplied parts. Renews yearly with the $199 VIP plan.
See VIP Membership*Subject to credit approval. Call 866-936-0602 for financing costs and terms.
Drain problems don’t hold steady. They get worse, and they almost always get worse on a holiday weekend or the night before company arrives. Molberg Plumbing has served Flower Mound and the surrounding Denton County communities since 2018 with licensed plumbers, straight pricing, and free estimates. We’ll show you what the camera sees, explain your options in plain terms, and get your drains moving again. Call now or request an appointment online.
Call 817-475-2800We serve Fort Worth, the DFW area and Houston’s north side. Find your city below.
Tarrant · Denton · Parker Counties

Montgomery · Harris Counties

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