You probably don’t think about your main water line until something feels off. A wet spot in the yard that wasn’t there last week. Pressure that’s weaker than it used to be. A water bill that crept up without anyone using more water. By the time most homeowners notice, the line has usually been failing for a while. That’s where Maplewood Plumbing comes in. Whether your service line is leaking, corroding, or made of something that shouldn’t still be in the ground, we replace it the right way.
Our Comprehensive Repair & Replacement Services
Not every water line issue needs the same fix. Some lines need full replacement. Others can be repaired in a single spot and last another decade. It all depends on what your line is made of, where it runs, what’s sitting above it, and what shape the rest of your yard is in. That’s why we handle every kind of water line job, from spot repairs to trenchless replacements. Whatever yours calls for, we have the method for it.
Water Line Diagnosis and Leak Detection
Before we recommend anything, we figure out what’s actually wrong. That usually means pressure testing the line, walking the route for surface clues, and using leak detection equipment to pinpoint where water is escaping underground. We also identify what the line is made of, since the material has a lot to do with whether repair makes sense or whether the whole run needs to go. Getting the diagnosis right up front saves money and avoids the kind of guesswork that turns into a bigger bill later.
Traditional Excavation Replacement
Excavation is the most direct way to replace a water service line. We dig a trench along the line’s path, remove the old pipe, and install a new one from the meter to the house. For shorter runs, lines under open lawn, or situations where the old pipe is too far gone for anything else, this is usually the most practical option. You can see exactly what’s being replaced, and the new line goes in clean. The trade-off is the disruption. There will be a trench across part of the yard, and depending on the route, that can mean working around landscaping, sidewalks, or driveways. We keep the footprint as small as we can and put things back the way we found them. But on some properties, trenchless makes more sense.
Trenchless Pipe Bursting
“Pipe bursting” replaces a water line along its existing route without trenching the whole length. We dig small access points at each end, then pull a bursting head through the old pipe. The head breaks the old line outward into the surrounding soil while pulling a new pipe in behind it. The new line ends up in the same path as the old one, the yard stays mostly intact, and the work is usually finished in a fraction of the time a full trench would take. It’s a strong option for lines running under driveways, mature trees, patios, or finished landscaping you don’t want torn up. It’s not right for every situation. The existing line has to be in a route that can be followed, and the soil around it has to give a little. But when conditions are right, it’s a clean, efficient way to handle replacement.
Trenchless Directional Drilling
Directional drilling is the other trenchless approach. Instead of following the existing line, we bore a new path underground from one access point to another and pull the new pipe through. That makes it useful when the original route can’t be reused, when the line needs to take a different path to avoid an obstacle, or when there isn’t a serviceable existing line to burst through. Like pipe bursting, it cuts way down on the digging. You end up with two small work areas instead of a trench across the yard. It takes more planning than excavation, but for the right property, it’s worth it.
Lead Service Line Replacement
Plenty of older homes in the St. Louis area still have lead service lines running from the meter to the house. Lead pipes are a health concern no matter what shape they’re in, and the rules around them have tightened a lot in recent years. If your line is lead, replacement isn’t really optional. It’s just a question of when and how. We handle lead service line replacement from start to finish (including coordinating with the utility for anything on the public side of the meter and pulling the necessary permits.) The new line goes in with modern, lead-free material, and we make sure the connections at both ends are done correctly. And if you’re not sure whether your home has a lead service line, don’t worry, we identify the material as part of the diagnosis.
Water Line Repair and Spot Fixes
Not every water line problem calls for replacing the entire run. If the line is in generally good shape but has a single failure point, like a pinhole leak, a damaged section near the meter, or a connection that’s let go, a spot repair is often the right move. This means pinpointing the failure, digging up only that section, and replacing the damaged length of pipe. Spot repair makes sense when the rest of the line still has plenty of life left in it. It doesn’t make sense when the material is failing along the whole run. We’ll be straight with you about which one you’re dealing with. If a repair will hold up, we’ll recommend it. If it’ll buy you six months before the next leak, we’ll tell you that too.
Emergency and Frozen Line Service
A line can rupture overnight, freeze during a cold snap, or start gushing the day before a holiday. When that happens, the priority is getting the water shut off and stopping the damage, then figuring out the longer-term fix. We handle emergency water line calls across St. Louis, including frozen and burst lines that are common during Missouri winters. If your line has frozen, we work to thaw it safely without making the damage worse, then check whether it can stay in service or needs to be replaced before the next freeze.
Free Estimate. Written Quote. No Pressure.
Call (314) 645-6350 or book online to schedule an inspection, so you know exactly what’s wrong and exactly what it’ll cost before anyone picks up a shovel.
How Do Water Lines Fail?
Water lines don’t usually fail all at once. They wear down over years, and what feels like a sudden problem is almost always something that’s been building.
A lot of it comes down to what the pipe is made of. Galvanized steel, common in homes built before the 1960s, corrodes from the inside until the opening narrows to almost nothing. By the time pressure problems show up at the fixtures, the inside of the pipe often looks more like a clogged artery than a water line.
Lead service lines, still in the ground at some older St. Louis homes, are a health issue regardless of condition. Polybutylene lines from the seventies and eighties are known for failing at joints and along the pipe walls. Even copper, which holds up better than most, eventually develops pinhole leaks once it’s been buried long enough in the wrong soil.
The ground plays a role too. Each winter’s freeze-and-thaw cycle puts pressure on joints and connections. The clay soil common in St. Louis yards shifts as it dries and rehydrates, which slowly stresses anything buried in it. Settling, frost heave, and decades of small ground movement all add up.
And then there’s age. Even a properly installed line in good soil has a working lifespan. Once a line passes a certain point, the question stops being whether it will fail and becomes ‘when’.
Common Signs Your Water Service Line Needs Repairs
Most water line problems show up inside the house before they show up in the yard. Water pressure is usually the first thing to look for. It might feel a little weaker than it used to, or only at certain fixtures, or it gets worse the more water you try to run at once. If you’ve ruled out the fixtures themselves and the problem keeps spreading, the supply line is a likely culprit.
The same goes for volume. If the bathtub takes noticeably longer to fill, the washing machine is slow, or running two fixtures at once leaves both starved for water, the line probably isn’t moving what it used to.
Discolored water is another sign. Brown, yellow, or rust-tinted water (especially if it clears after the tap runs for a minute and then comes back later) usually points to corrosion inside the pipe. A metallic taste or odor, or rust staining in sinks and toilets, usually comes from the same underlying problem.
Your water bill is another sign most people miss. St. Louis County homes are metered, so a leak in the service line usually shows up as a sudden jump on the bill, or a meter that keeps spinning when nothing in the house is running.
In the City of St. Louis, most homes are billed on a flat rate rather than by usage, so the bill won’t tell you anything is wrong. City residents have to lean more on the other signs, like the wet patches in the yard, the pressure drops, the sounds in the walls.
Sounds can give it away too. A faint hissing or running-water sound when nothing is on, or whistling from pipes when water is in use, both point to a line that isn’t sealed the way it should be. Then there’s the yard. A patch of grass that stays green when the rest goes dry. A soft, soggy spot near the line’s path. Ground that’s starting to sink. All of those mean water is leaking out below the surface, often from a line that’s well past replacement.
EXPERT TIP: If your line has already been repaired more than once, that’s usually the answer right there. Pinhole leaks rarely stop at one. Once a line starts going, patching it tends to buy time rather than fix the problem.
Who’s Responsible for Your Water Line?
Once a line starts to fail, the next question most homeowners have is: “who handles it”?
The answer depends on where the problem is and which side of the city you’re on. A lot of people find out the hard way that “the water line” isn’t one single thing, it’s three different pieces of plumbing, and the responsibility for each one falls in a different place.
Water Main vs. Water Service Line vs. Water Distribution Line
The water main is the large pipe under the street that carries treated water through the neighborhood. It belongs to the utility (either the St. Louis City Water Department or Missouri American Water, depending on where you live) and they handle any repairs to it. If you see water bubbling up through pavement or a sinkhole forming in the street, that’s a water main issue and your utility is the right call.
The water service line, sometimes just called the main line into your house, is what runs from the water main, under your yard, to inside your home. It’s typically buried about three and a half feet underground and connects to the meter and the shutoff valve on its way in. The public side (from the city main to the meter) is generally the utility’s responsibility. The private side (from the meter to the house) is yours.
The water distribution line is everything inside the house: the plumbing that carries water from the service line to your sinks, showers, toilets, washing machine, refrigerator, and anywhere else water is used. That’s all on the homeowner too.
When people say “I need my water line replaced,” they almost always mean the water service line. That’s the one we replace most often, and it’s the one this page is mostly about. It’s also worth knowing that water service line work is regulated. It requires permits, has to meet code, and in most St. Louis municipalities can only legally be done by a licensed plumber.
Important Information About the St. Louis County Water Service Line Program
If you live in St. Louis County, there’s a program you might already be paying into without realizing it. Approved by homeowners back in 2000, the Residential Water Service Line Repair Program adds about a dollar a month to your water bill, and it covers exterior leaks on the homeowner side of the line.
If you suspect a leak in your yard, between the meter and the house, you can call the County program directly at 314-615-8420. They’ll line up qualified contractors, take bids on your behalf, and cover the repair.
That said, the program doesn’t cover everything. It won’t help with repairs inside the house, damage from freezing or other acts of God, water meters or utility-owned equipment, landscaping disturbed during the work, the relocation of shutoff valves, or the elective replacement of old or lead pipes.
So if your line is failing because of freeze damage, because it’s lead and you want it replaced for health reasons, or because something has gone wrong inside the home, the County program won’t help you. That’s where we come in.
What To Know About St. Louis City’s Water Service Line Repair Program
The City of St. Louis runs its own version. The City’s program covers breaks in the residential water service line from the water main to the tee head, usually in the tree lawn area near the curb. To qualify, you need to be current on your water bill. They generally do not cover repairs on private property (meaning the section from the tee head to the house), commercial water service repairs, and anything inside the home.
If it’s covered, great. If it’s not, or if the failure is on the section the program won’t touch, give us a call at (314) 645-6350
Why Annual Inspection Still Matters
Whether your line is on the public side and covered by one of these programs, or on the private side and your responsibility entirely, a water line inspection every one to two years is the best way to catch problems before they become emergencies. We can run a check on your service line, identify what it’s made of, and flag anything likely to give you trouble in the next few years. Catching a line that’s starting to corrode is a lot cheaper than dealing with the flood that comes after it lets go.
Water Line Materials We Install
When we replace a water line, the goal is to put in something that outlasts the rest of the house. The right material depends on the property, the route, and the method we’re using to install it.
- Type K copper is the traditional choice and still a good one. It’s durable, holds up well in most soil conditions, and has decades of service life when installed correctly. We use it for excavated runs where conditions support it.
- PEX is a flexible plastic line that’s become increasingly common for water service replacement. It handles freezing better than rigid pipe, doesn’t corrode, and is easier to install in routes with curves or obstacles. It’s a strong option for homeowners who’ve dealt with freeze damage before.
- CPVC is another plastic option, more rigid than PEX, that resists corrosion and handles temperature well. It’s not our most common pick for full water service replacements, but it has its place, usually in shorter runs or specific install scenarios where the rigidity is actually an advantage.
- HDPE, or high-density polyethylene, is what we usually run for trenchless installations. It comes in long continuous lengths without joints, gets heat-fused at any connection point, and is one of the longest-lasting options out there for buried water lines.
When To Call The Experts at Maplewood Plumbing
When it comes to St. Louis water line replacement services, there’s no shortage of plumbers to choose from. So why do homeowners across the city and surrounding suburbs call Maplewood Plumbing? Because we do things the right way, every time.
That means real diagnosis before we recommend replacement, a written estimate before any work begins, pulling the right permits coordinating with the city or utility whenever the public side of the line is involved. A licensed local team handles the job from start to finish. And when the job’s done, we restore the yard, the driveway, or whatever else we had to work around.
We also know this isn’t a project most homeowners budget for. A failing water service line tends to come up suddenly, and the cost can feel like a lot to absorb all at once. If that’s the case, we offer financing options that let you handle the work your home needs now and pay for it on terms that fit your household.
Replace It Now, Pay For It Over Time
A failing water line is one of the few plumbing problems that only gets more expensive the longer it sits. If cost is the holdup, our financing options make it easier to move forward now. Fill out the contact form here and we’ll come take a look.