Water Line Leak Between the Meter and the House in Houston: Signs, Who Is Responsible, and Repair vs Replacement Cost

A water line leak in the front yard is one of the quieter plumbing failures a Houston homeowner can have. There is no drip, no stain on a ceiling, no puddle on the garage floor. The first sign is often a water bill that jumped, a strip of grass that stays green through an August drought, or the meter reader leaving a note. By then the line may have been running for weeks, and because the pipe sits in the ground between the city’s meter and your house, the first question most people ask is whether it is even their problem.

This guide covers what the service line is, how to confirm it is leaking with your own meter, who owns which side of the pipe, what a plumber does to find it, and what repair and replacement cost in Houston.

What the Water Service Line Is

The water service line is the single pipe that carries water from the meter at the street to the point where it enters your house, usually at the main shutoff valve near a hose bib, the garage, or the slab edge. On most Houston homes it is 3/4 inch or 1 inch, buried roughly 12 to 24 inches deep, and runs 30 to 100 feet depending on the setback.

What it is made of depends mostly on when the house was built and whether anyone has replaced it since:

• Galvanized steel, common before about 1970 in Oak Forest, Bellaire, Meyerland, Spring Branch, and the older parts of the Heights. It rusts from the inside, narrows, and eventually leaks at threaded joints.
• Copper, the standard from the 1960s through the 2000s. Durable, but thin Type M copper and Houston’s chloramine-treated water can produce pinhole leaks, and a copper line that was nicked by a shovel or sits against a rock will fail there.
• Polybutylene, the gray plastic used widely in 1978 to 1995 subdivisions across Katy, Cypress, Spring, Sugar Land, and Pearland. It becomes brittle from the inside and fails without warning; see our polybutylene pipes guide.
• PVC or CPVC, on some 1980s and 1990s homes and many budget replacements. It cracks at glued fittings when the soil moves.
• PEX and HDPE, what most service lines are replaced with today. Flexible, joint-free over the run, and the right choice for Houston clay that heaves and shrinks with the seasons.

Signs the Service Line Is Leaking

Service line leaks hide well because the ground absorbs the water. The signs show up at the edges:

• A wet, soft, or sunken patch in the yard, or a strip of grass that is greener and thicker than the rest, often in a line between the meter box and the house.
• Water standing in the meter box on the house side of the meter, or a meter box that is always muddy when the neighbors’ are dry.
• The meter moving with everything off. This is the test that settles it, and it takes ten minutes; the steps are below.
• A water bill that climbed with no change in household use. A 3/4-inch line with a modest split can lose thousands of gallons a month. Our high water bill guide walks through the other suspects.
• Lower pressure at every fixture, especially if it dropped suddenly. A leak big enough to drop pressure is a leak big enough to wash out soil. If only some fixtures are weak, the cause is inside; see low water pressure in Houston.
• The sound of running water at the main shutoff or in a wall near where the line enters, when nothing is on.
• Cracks in the driveway or sidewalk that appeared over the line’s path, or a corner of the slab that started moving. Water under a Houston foundation is a foundation problem in the making.

The Ten-Minute Meter Test

You can confirm a leak and narrow down which side of the house shutoff it is on without a plumber.

1. Make sure nothing inside is using water: no washer, dishwasher, ice maker filling, irrigation, or a toilet that runs. Shut off the irrigation controller’s water supply if it has its own valve.
2. Open the meter box lid at the curb and find the meter. Most Houston meters have a small triangle, star, or wheel that spins with any flow, plus a sweep hand or digital reading.
3. Watch for ten minutes. Any movement means water is leaving the system. Note the reading if the meter is digital.
4. Now close the main shutoff at the house (the valve where the line enters, not the valve at the meter). Our how to shut off your water main guide shows where it is on most Houston homes.
5. Watch the meter again for ten minutes.

If the meter stops when the house valve is closed, the leak is inside the house or under the slab, and the service line is fine. If the meter keeps moving with the house valve closed, the only pipe still connected to it is the service line, and that is where the water is going.

Two caveats: a house shutoff that does not fully close will fool the test, and some homes have an irrigation tee off the service line before the house valve, so a leaking sprinkler zone looks exactly like a service line leak. A plumber checks both before digging.

Who Is Responsible for the Pipe

In the City of Houston and in the municipal utility districts that serve most of the suburbs, the division is generally the meter itself:

• The utility owns and maintains the water main in the street, the tap, the line from the main to the meter, and the meter.
• The homeowner owns the line from the meter’s outlet to the house and everything beyond it, including any part that runs under the sidewalk, the driveway, or the public right-of-way strip between the sidewalk and the curb.

That surprises people, because a leak under the sidewalk feels like a city problem. It generally is not. The exact handoff point does vary by district, so confirm with your utility before anyone digs, and call them first if the water is on the street side of the meter or in the meter box itself; they will usually send a crew at no charge for their side.

Service line coverage is a separate question. Some insurers sell a service line endorsement, and several Houston-area utilities partner with third-party warranty programs that cover the homeowner’s side of the water and sewer lines for a monthly fee. Whether those plans are worth it, and what they actually pay, is covered in our sewer line insurance and service line coverage guide. A standard homeowner’s policy generally covers sudden water damage to the house but not the buried pipe.

How a Plumber Finds the Leak

The meter test tells you the leak is in the service line. It does not tell you where along 60 feet of buried pipe, and digging the whole run to find a split is the expensive way. A leak detection visit narrows it down:

• Isolation. The plumber confirms the meter test, checks for an irrigation tee, and verifies the house shutoff actually holds.
• Pressure testing. With the line isolated, a gauge on a hose bib or at the meter shows how fast the line loses pressure, which hints at the size of the leak.
• Acoustic listening. A ground microphone picks up the hiss of pressurized water escaping, and the plumber walks the line from meter to house to find the loudest point. Clay soil and deep lines make this harder; sandy fill and shallow lines make it easy.
• Tracing. If nobody knows where the line runs, a locator follows a metal pipe or a tracer wire, or the plumber works from the meter and the entry point and assumes the straight line between them.

On most Houston yards this gets the dig down to a single hole a few feet across, instead of a trench the length of the yard.

Repair or Replace?

This is the decision that drives the cost, and it depends on the pipe more than the leak.

Repair makes sense when:

• The line is copper, PEX, PVC, or HDPE and less than about 25 years old.
• This is the first leak, and the cause is obvious and local: a root, a shovel strike from a fence post or a tree planting, a rock, a single failed fitting.
• The leak is in open yard, not under concrete.

Replace the whole run when:

• The line is galvanized steel or polybutylene. There is no sound section to splice into, and the next leak is already forming.
• It is the second leak on the same line. Two repairs usually cost more than one replacement, and the third leak is coming.
• The line is thin old copper with pinhole leaks, the same chloramine-driven failure described in our pinhole leaks in copper pipes guide.
• The repair would mean breaking a driveway or sidewalk anyway. Once the concrete is open, the cost difference between a patch and a new line shrinks.
• The line is undersized for the house and you have been living with weak pressure.

Replacement today is usually a new PEX or HDPE line from the meter to the house in a single joint-free run. Where the line crosses a driveway, sidewalk, or mature tree roots, the new pipe can be bored or pulled under the obstacle through a small pit on each side, which costs more per foot than an open trench but leaves the concrete intact. A new service line also gets a new main shutoff at the house, and the connection at the meter is made by the plumber on the house side of the meter coupling; the utility is generally notified and the work inspected where the city requires a permit.

A galvanized or polybutylene service line is also a strong hint about the pipe inside the house. If the interior is the same material, a whole-home repipe at the same time is often the right call, and our repipe cost guide covers what that adds.

What It Costs in Houston

What moves the number: the length of the run, how much hardscape it crosses, how deep the line sits, whether tree roots are in the path, and whether the yard has sprinkler lines and low-voltage wiring the crew has to work around. Clay soil in winter and spring is heavy and slow to dig; dry August clay is nearly as hard as concrete. The pipe itself is a small share of the total.

Hugo Plumbing locates the leak on a free diagnosis visit, then prices the repair or the replacement as one flat written number before any digging starts. Permit and inspection are included when the city requires them, the work carries at least a one-year warranty with extended coverage by job type, and financing is available on larger jobs like a full replacement. Customers 55 and older and military receive 10% off, not combinable with other offers.

DIY or Call a Plumber?

The meter test is yours to run, and it is worth doing before you call anyone, because it tells the plumber which half of the system to look at. Locating and repairing the line is a plumbing job: it involves pressurized pipe, utility locates for gas and electric before digging, a connection at the meter that the utility has rules about, and a repair that will be buried and forgotten, which means it has to be done right the first time. Boring under a driveway is specialized equipment.

If your meter keeps spinning with the house valve closed, the leak detection visit is free and the repair is quoted in writing on the spot. If water is pooling against the foundation or the ground is sinking, shut the line off at the house or the meter and call the 24/7 emergency line at (713) 409-7176, call or text. If shutting it off leaves you with no water at all, our no water in the house guide covers getting through the gap.

A service line leak will not fix itself, and every day it runs is metered water and softer soil under the house. Our hidden water leak guide covers the inside-the-house checks if the meter test points the other way.

Frequently Asked Questions

Who is responsible for a water line leak between the meter and the house in Houston?

In Houston and most surrounding MUD districts, the utility generally owns the meter and everything on the street side of it, and the homeowner owns the service line from the meter outlet to the house. A leak on the house side of the meter is the homeowner’s repair, even if it sits in the front yard or under the sidewalk. Confirm with your utility, because the exact handoff point varies by district, and ask whether you have service line coverage through your insurer or a utility-partner program before you pay out of pocket.

How do I know if my main water line is leaking underground?

Turn off every fixture and appliance inside, then watch the meter for ten minutes. If the low-flow indicator or the sweep hand moves with nothing running, water is leaving the system somewhere. Next close the main shutoff at the house and look again: if the meter stops, the leak is inside the house; if it keeps moving, the leak is in the service line between the meter and that valve. A green or soggy strip in the yard, soft ground, water in the meter box on the house side, and a bill that climbed with no change in use all point the same direction.

How much does it cost to repair or replace a water service line in Houston?

As a general Houston-area market range as of October 2026, a single spot repair on an exposed section runs roughly $400 to $1,200, while a full replacement from the meter to the house runs roughly $2,000 to $6,000 for a typical 40 to 80 foot run, with longer runs, driveway or sidewalk crossings, and 1-inch lines pushing higher. Boring or pulling the new line under hardscape instead of cutting it usually costs more per foot but saves the concrete. Hugo Plumbing locates the leak on a free diagnosis visit and quotes the repair or replacement as one flat written price before any digging.

Should I repair or replace a leaking water line?

Repair a single leak on a relatively young copper, PEX, or PVC line that was damaged by a root, a shovel, or a settling fitting. Replace the whole run when the line is galvanized steel, polybutylene, or thin older copper, when this is the second leak on the same line, or when the repair would require opening a driveway or sidewalk anyway. A second leak on an aging line is the line telling you the rest of it is in the same condition, and two repairs often cost more than one replacement.

Can I use water while the service line is leaking?

Usually yes for a few days, as long as the house still has pressure and the leak is not undermining the foundation or flooding a neighbor. The water you lose is metered, so the leak is costing you on every day it runs, and a leak under or beside the slab can soften the soil enough to cause foundation movement. If you see water pooling against the house, the ground sinking, or pressure dropping fast, shut the main off at the house or the meter and treat it as urgent.

If your meter won’t stop, call Hugo.