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Water main break: whose pipe it is and what to do
A break in the main under the street is the water utility's to fix. A leak in the service line that carries water from the meter or curb stop into your house is usually the property owner's. Call the utility first either way. It can tell you which side of the line the leak is on, and whether the water is safe to use.
The main, the service line and the meter: who owns which part
Water reaches a house through two pipes. The main is the large pipe under the street that serves the block. The service line branches off it and runs to the house, usually through a shut-off valve near the street (the curb stop) and the meter. Every utility repairs its own mains. Where its responsibility for the service line stops is set utility by utility.
The common split puts the dividing point at the curb stop. In Minnesota, the state Department of Health reports that most systems own the service line to the curb stop and the customer owns it from the curb stop to the building. But a large city can draw the line somewhere else entirely, as the table shows.
| Utility | Where the owner's pipe begins | Source |
|---|---|---|
| San Jose Water (California) | At the meter. The utility owns the pipe from the main to the meter outlet coupling, meter and meter box included; the owner has the line from the meter to the house. | San Jose Water, Who's responsible for what (checked 2026-10-06) |
| Portland Water District (Maine) | At the street line or property line. The curb stop and service box belong to the utility; the owner has the rest of the line, to and into the building. | Portland Water District, System responsibilities (checked 2026-10-06) |
| Denver Water (Colorado) | At the main. The owner is responsible for the service line from the tap on the main, and for the meter pit. | Denver Water, Homeowner responsibility (checked 2026-10-06) |
| New York City DEP | At the main. The owner's service line runs from the house to the City's main in the street. | NYC DEP, Water shut-off warning notice (PDF) (checked 2026-10-06) |
| Fremont Department of Utilities (Nebraska) | At the main. The owner's service line runs under the street when the main is on the far side. | City of Fremont, What's yours? What's ours? (checked 2026-10-06) |
In Denver the meter pit is usually in the front yard, so “the owner's side of the meter” and “the owner's pipe” are different stretches. Before you pay for a repair near the street, ask the utility where its responsibility ends at your address and get the answer in writing. The sewer pipe leaving the house has its own split, set by a different rule: who pays for the sewer lateral, city by city.
The exact wording from each utility
San Jose Water (California): “SJW is responsible for the pipes that bring water from the water main located under the street, all the way to the meter outlet coupling.” (San Jose Water, Who's responsible for what, checked 2026-10-06)
Portland Water District (Maine): “The utility owns the portion from the water main to the street line or property line. The customer owns the remaining portion – to and into the building.” (Portland Water District, System responsibilities, checked 2026-10-06)
Denver Water (Colorado): “The dividing point between Denver Water-owned mains or distributor-owned mains and service lines that are the responsibility of the property owner is located where the property taps into the main” (Denver Water, Homeowner responsibility, checked 2026-10-06)
New York City DEP: “Property owners own and are responsible for their water service line, which connects their home to the City’s water main in the street.” (NYC DEP, Water shut-off warning notice (PDF), checked 2026-10-06)
Fremont Department of Utilities (Nebraska): “If the main is across the street, the service runs under the street. You own and maintain the water service line.” (City of Fremont, What's yours? What's ours?, checked 2026-10-06)
Is it the main or your service line?
Two questions sort most cases. Where is the water coming up, and who else has lost water?
- Water running out of the pavement, the gutter or the street, and neighbors on the block with no water or low pressure too, points to the main, because one main serves the whole street.
- Only your house is affected, and the signs are on your lot, points to your service line. The Borough of Hastings lists the signs: a drop in pressure or flow inside the home, water bills showing unexplained use, wet spots in the yard between the meter and the house or water seeping into the basement or crawl space near the line, and running or hissing at the main shut-off valve when nothing is in use.
The meter test. Turn off every fixture, then watch the meter. EPA's WaterSense program suggests reading the meter before and after a two-hour period with no water use; if it moved, you probably have a leak. Hastings suggests a quicker check. Close the main shut-off valve inside the house, then check the meter. If it is still turning, the leak is underground between the meter and that valve, and the borough's advice is to contact a plumber.
Who to call first
The utility, for anything in the street or at the meter. Use the emergency or after-hours number on your bill or the utility's website. San Jose Water asks customers to report a leak it is responsible for 24 hours a day, and Fremont, Nebraska says that when the leak is from a main, it will repair it. Even if you suspect your own line, the utility can usually confirm which side the leak is on before you hire anyone.
A licensed plumber, for your service line. Utilities often set the terms of that repair. Fremont requires a master plumber licensed by the city and a utility permit before work starts. In New York City, a leak notice gives the owner three days to hire a licensed master plumber, who must pull DEP and DOT permits, and the city shuts the water off if the repair is not made in time.
Shutting the water off. The valve inside the house, where the line comes in, is yours to close. Ask before you turn a valve at the street. San Jose Water asks customers not to shut off water at the meter box, and in Portland, Maine, the curb stop belongs to the utility. Denver describes its curb stop as a valve that helps both the owner and the utility control the flow if the service line leaks.
During a main break
The City of Sherwood, Oregon, asks residents to be patient, leave faucets turned off, and stay away from the leak site if you can. Water may be rerouted while the crew works, but service can still be interrupted.
- Skip the laundry. Sherwood advises no laundry during a main leak, and dark colors for the first load after the repair, because discolored water left in the pipes can stain light fabric.
- Keep sediment out of the water heater. Richmond's public utilities department advises avoiding hot water while the water is discolored. A heater that fills with stirred-up sediment needs flushing later.
- Water you already have. EPA lists melted ice cubes and the water in your hot water tank and pipes as emergency sources. To draw from the tank, Sherwood says to turn off the gas or electricity to the heater first.
Brown or cloudy water after the repair
When the main is back in service, the change in pressure can leave air and sediment in the lines. Sherwood's notice says that water is still treated and safe to drink; your own utility's notice is the one that counts for your address.
- Run cold water first. Sherwood suggests the bathtub tap, on cold, for about two minutes or until it runs clear, then each faucet in the house. If it is still discolored, wait about 20 minutes and try again.
- Hold off on hot water until the cold runs clear. If only the hot water is discolored, Richmond says to let the sediment settle, run the hot water briefly, or have the heater flushed.
- If the color does not clear, call the utility. Richmond's guidance adds that a plumber may be needed when the problem is in the home's plumbing.
Boil water notices
After a water pipe breakage, EPA notes that local authorities may recommend using only bottled, boiled or disinfected water until service is restored. Not every break leads to a notice. If one is issued, CDC's drinking water advisory guidance covers the household details:
- Bring water to a full rolling boil for 1 minute, or 3 minutes above 6,500 feet, and let it cool. Boil it even if it went through a home filter or a filter pitcher.
- Do not use the water or ice dispensers in the refrigerator or freezer.
- Brush teeth with boiled or bottled water.
- A dishwasher is generally safe if it has a sanitizing cycle or a final rinse of at least 150°F. Laundry can be washed as usual.
If you cannot boil water, EPA's emergency disinfection method is 8 drops of 6% unscented bleach, or 6 drops of 8.25% bleach, per gallon, stirred and left to stand for 30 minutes. Double the dose if the water is cloudy or colored.
After the notice is lifted
Your utility's instructions come first. Hendersonville, North Carolina, publishes a typical checklist for flushing a house after a boil water advisory:
- Run the cold tap until the water is clear, then run every cold line (showers, outdoor spigots) for five to ten minutes.
- Flush the hot water side: at least 15 minutes for a typical 40-gallon tank, 30 minutes for 80 gallons or more. Then run the dishwasher empty once.
- Replace water filters, cartridges, faucet screens and aerators, following the manufacturer's instructions.
- Flush the refrigerator water dispenser with at least a quart of water, and empty the ice maker of ice made during the advisory, discarding what it makes over the next 24 hours.
Water damage and insurance
Who pays for damage depends on whose pipe failed, and state law can limit a utility's liability for its own main. In Colorado, municipal water suppliers are not liable for damage from a break unless the utility was negligent, Denver Water explained in 2017, when it described the customer care policy it uses anyway to help pay for cleanup and some property damage after a main break. Its safety team's advice to anyone affected: know your options, take pictures of your property and possessions, and keep your paperwork organized. Ask your own utility whether it has a claims process.
For damage from the owner's own pipe, Denver Water says it is not responsible for water damage caused by a property's service line or internal plumbing, and that such damage may or may not be covered by a typical homeowner's policy, so ask your agent. New York City's repair notice says repairs may be covered by the property's insurance or by a service line protection program the owner is enrolled in. How those plans work, and what they leave out: service line insurance and warranties.
Common questions
Who is responsible for a water main break?
The utility. The main is the large pipe under the street, and every utility on this page repairs its own mains. What changes from one utility to the next is where the main ends and your service line begins: at the meter, at the curb stop or property line, or right at the tap on the main.
Is my water safe to drink after a main break?
Follow your utility's notice. Some breaks end with a boil water advisory and some do not. Sherwood, Oregon, for example, tells customers that discolored water after a repair is still treated and safe to drink. If a boil advisory is issued, CDC's guidance is a full rolling boil for 1 minute, or 3 minutes above 6,500 feet.
Why is my water brown after a water main break?
Richmond's public utilities department lists a change in water pressure in the system, often from a main break, as a common cause, along with sediment in the pipes and trapped air. Utilities advise running the cold tap until it clears and holding off on hot water and light-colored laundry until it does.
Who pays to fix the water line from the meter to the house?
The property owner, at every utility we checked. Some owners are also responsible for the stretch from the meter or curb stop to the main, under the street included: Denver Water, New York City and Fremont, Nebraska all draw the line at the main.
Does homeowners insurance cover a broken water service line?
It depends on the policy, and the utilities say so. Denver Water tells owners that water damage may or may not be covered and to ask their agent; New York City's repair notice says repairs may be covered by the property's insurance or by a service line protection plan if the owner is enrolled.
Sewer Line Record is an independent reference built on public records and published sources. It is not an inspection, and nothing here states that a specific sewer line is failing, safe or code-compliant. Utility rules change; the linked source is the authority, not this page. Sources checked 2026-10-06.