Responsibility for a water leak outside your house usually comes down to one reference point: the water meter. Pipes between the street main and the meter belong to the water utility, and pipes from the meter to your house belong to you. That’s the general rule in most service areas, but not every utility draws the line in the same spot, and getting the side wrong can waste days and money before anyone picks up a shovel.
Where the Dividing Line Actually Falls
Every water utility defines a “point of delivery” in its service agreement, and that point decides who fixes what. In many areas the meter itself is the line. In others it’s the curb stop valve near the street, and in some it’s the connection to the public water main.
The only way to know for your address is to check your utility’s code of practice or service agreement, usually posted on the utility’s website or available by phone. If you’re buying a house, ask about the location and condition of the private service line before closing.
What the Water Utility Pays For
The utility owns the public water main under the street and the portion of the service pipe running from the main to its defined delivery point. A leak anywhere in that stretch is theirs to repair, including excavation and putting the street or sidewalk back together. You aren’t billed for the work.
Water main breaks tend to announce themselves: water bubbling through pavement, cracks opening in the road, pressure dropping across several homes at once. A leak closer to the connection may be subtler, showing as a persistent wet patch near the curb.
The meter itself is also generally utility property. If it’s damaged, leaking, or malfunctioning, the utility replaces it at no charge. Don’t open or adjust it yourself.
What You Pay For
Your responsibility covers the private service line, meaning the pipe running from the utility’s delivery point to where it enters your house. If that line cracks, corrodes, or separates at a joint, the repair bill is yours. That includes the plumber’s labor, materials, excavation, backfill, and restoring whatever sat on top of the pipe, whether that’s lawn, driveway, or garden.
Costs vary with depth, pipe material, access, and how much surface has to be disturbed. A simple spot repair might run a few hundred dollars; a full line replacement with trenching across a yard can reach several thousand once landscaping restoration and permits are included.
Standard Homeowner’s Insurance Usually Won’t Cover It
Most standard homeowner’s policies exclude damage to underground utility lines. A pipe bursting inside your house is typically covered; the buried line between the house and the water system is not. Coverage requires a separate endorsement, often called “service line coverage” or “buried utility line coverage,” added to your existing policy for an extra premium.
These endorsements generally pay for repairing or replacing the damaged line, the excavation to reach it, and the landscaping work afterward. Annual premiums for water line protection alone typically run in the range of roughly $75 to $150, though it varies by provider and location. Some utilities partner with third-party warranty companies and offer these plans directly on the water bill. Whether it’s worth adding depends on the age and material of your service line and how deep and accessible it is.
How to Tell Which Side the Leak Is On
Before calling anyone, you can usually figure out which side of the meter the problem is on with a two-step test.
Shut off every water-using fixture and appliance in and around the house: faucets, toilets, ice makers, sprinklers, hose bibs. Then find the water meter, usually in a concrete or plastic box near the curb, and look at the leak indicator, a small triangular or star-shaped dial on the meter face. If that indicator is spinning with everything off, water is passing through the meter, which puts the leak on your side.
Next, find your home’s main shut-off valve, typically where the water line enters the house in a basement, crawl space, or utility closet. Close it fully and check the meter again. If the indicator stops, the leak is in the plumbing inside your home. If it keeps spinning, the leak is in the service line between the meter and the house. That distinction tells you whether to call an indoor plumber or a service line specialist with excavation equipment.
If the indicator doesn’t move at all during the first step, the leak may be on the utility’s side, or it may be too slow for the dial to register. A plumber with acoustic detection equipment can pinpoint the spot without digging exploratory holes.
Signs There’s a Leak in the First Place
Underground leaks are invisible by definition, but they leave signs. Catching them early matters, because even a small leak wastes thousands of gallons over time and can erode soil, pavement, and foundations.
- A water bill that jumps with no change in your usage habits.
- Wet or soggy patches in the yard, especially during dry weather. Grass over the leak may grow faster or greener than the rest of the lawn.
- A drop in water pressure at faucets, showerheads, or appliances.
- The sound of running water when nothing inside is turned on.
- Rusty or dirty water at the tap, which can mean soil is entering through a cracked line.
Any one of these warrants a look. Two together make a leak very likely.
What to Do Once You Know
If the Leak Is on the Utility’s Side
Call your water utility’s emergency line. Most utilities run a 24-hour hotline for this. Have your address ready and describe what you’re seeing: where water is surfacing, how long it’s been visible, whether the street or neighboring properties are affected. The utility will dispatch a crew to assess and repair, and you won’t be billed.
If the Leak Is on Your Side
Call a licensed plumber with experience in outdoor service line work. This isn’t a do-it-yourself project. Service lines are buried several feet deep, often run under driveways or landscaping, and may require permits to excavate. A plumber unfamiliar with underground line work can cause more damage than they fix.
If you can’t get someone out immediately and water is actively flowing, close your main shut-off valve. That cuts water to the whole house, but it stops the meter and prevents further soil erosion. Even though the repair is yours, reporting the leak to the utility is still worth doing. Some will note it on your account, which helps later when you ask for a billing adjustment.
When a leak is confirmed but you can’t see any surface evidence, professional leak detection services can locate it acoustically before anyone digs. That costs far less than exploratory excavation and avoids opening the ground in the wrong spot.
Getting a Water Bill Adjustment
Even though the repair is your responsibility, many utilities offer a one-time leak adjustment or courtesy credit when a concealed underground leak drives up a bill.
The specifics vary, but the pattern is consistent. You usually have to show the leak has been repaired, provide a receipt or invoice from a licensed plumber, and submit a written request within a set window after receiving the high bill, often 60 to 90 days. Most utilities limit adjustments to one per property within a 12- to 24-month period, and they won’t adjust bills for discretionary use like filling a pool or watering a lawn.
The adjustment usually doesn’t erase the full overage. Utilities commonly credit a percentage of the excess usage above your normal average, not the whole amount. When a hidden leak has doubled or tripled a month’s bill, even a partial credit is meaningful. Ask about your utility’s specific policy before submitting paperwork so you know what documentation to collect.
Renters, Condos, and Easements
If you rent, the outdoor service line is the landlord’s responsibility. Your job is to report the problem promptly, in writing, as soon as you notice signs of a leak. A landlord who fails to address a known plumbing issue may be violating habitability requirements under state law.
In a condo or HOA community, responsibility depends on whether the pipe is shared infrastructure or dedicated to your unit. Leaks in a main line serving the whole complex are generally the HOA’s responsibility, covered under the association’s master insurance. Leaks in pipes serving only your unit typically fall on you. The association’s governing documents, usually the CC&Rs and bylaws, spell out exactly where the line is drawn. Ask your property manager if you’re unsure.
Even when a water line runs across your yard, the utility may hold an easement giving it the legal right to access and maintain its portion of the line. An easement doesn’t transfer ownership of your land, but it means you can’t block access or build permanent structures over the easement area. If you’ve landscaped over an easement and the utility has to dig, they’re entitled to do so, and the cost of restoring what they removed usually falls on you. Check your deed for recorded easements before planting trees or putting hardscape near a known water line route.
What Happens If You Leave It Alone
Ignoring an outdoor leak because it seems small or the repair looks expensive almost always gets worse. The water doesn’t stop, and neither does the meter.
You keep paying for water soaking into the ground. A leak losing a few gallons per hour reaches thousands of gallons a billing cycle. The pipe keeps deteriorating in the meantime, and a pinhole can become a rupture.
Water migrating underground can also reach a neighbor’s foundation, erode shared landscaping, or undermine a retaining wall. If a neighbor’s property is damaged by a leak you knew about and didn’t fix, you may be liable for their repair costs. Homeowner’s insurance often excludes claims tied to negligence or deferred maintenance, so that liability can land on you personally.
Some municipalities also treat ongoing water waste as a code violation. Depending on local ordinances, that can mean fines, a mandatory repair order, or a shutoff if the utility decides the leak is causing waste or a hazard. The longer you wait, the fewer options remain.