Water in the street? That one is not yours.
A break in the water main belongs to your water system, not to you, and the first call is to them rather than to a contractor. What is yours is the line from the curb to the house. Here is how to tell which one you are looking at.
The main in the street and the curb stop at the property line belong to your water purveyor, so a main break is their repair and their cost. Call them, and keep clear of the water, because a break washes the support out from under pavement that still looks solid. If a boil water notice follows, it is precautionary: losing pressure means the system cannot prove nothing entered the pipe, so NJDEP requires the advisory while they disinfect, flush and sample. It lifts on laboratory results. The part that is yours is the service line from the curb stop to the house, and that is the work we do for homeowners.
What to do right now
Ask whether the neighbors have water
A whole street out, or water coming up through the road, is the main. That belongs to the water system and it costs you nothing. Only your house points at your service line, which is a different problem with a different owner.
Call your water purveyor, not a contractor
They own the main and the curb stop at the property line, and they are the ones who have to isolate it, repair it and decide about a boil notice. If you are not sure who supplies your water, we keep a list of every New Jersey purveyor.
Stay out of the water in the street
A main break moves a lot of water fast and it takes the ground out from under the pavement while it does it. The hole under a street that looks intact is the actual hazard, along with anything electrical the water has reached.
If a boil notice arrives, it is precautionary and it is required
Losing pressure means the system cannot prove nothing got in, so the advisory goes out while they disinfect, flush and test. It is not evidence that something was found. It gets lifted on satisfactory laboratory results, not on a guess.
Do not run the tap clear on your own schedule
Wait for the system to say the advisory is lifted. Sampling has to come back clean from a New Jersey certified drinking water laboratory first, and the number of samples is set by how many people were affected.
When it is your line and not theirs
Only your house affected, rather than the street, points at the service line. These are the signs, and they are the same ones as a water service failing on its own or freezing and splitting in a cold snap.
The service line from the curb to the house
This is the part you own in most New Jersey setups, and it is the part we replace. Where exactly the boundary falls is set by your water system's own tariff, so confirm it with them rather than with any general statement, including this one.
A wet patch that never dries
Grass that is greener in one strip, a soft spot, a small sinkhole, or water at the curb with no rain. A service line leak often shows on the surface long before it shows in the house.
Pressure that fell off and stayed off
Especially when the neighbors are fine. A partially collapsed or corroded service can deliver water and still deliver it badly.
A bill that jumped for no reason
A leak on your side of the curb stop is water you are paying for. It is often the first thing anyone notices, and it is worth acting on rather than waiting for the yard to give it away.
Not every main break is the same break
NJDEP defines three types, and which one a break is decides everything that follows it: whether the state gets called, whether a boil notice goes out, and whether anybody has to sample the water afterwards.
| Type | What it means | What follows |
|---|---|---|
| Uncontrolled outage | Loss of positive water pressure at street level across the system or part of the service area before corrective action, or a loss of positive pressure causing intermittent service. Size of the main and number of connections affected do not matter to the definition. | The full set applies: notify NJDEP, issue a boil water advisory, disinfect the repair, sample, report. This is the one people mean when they say main break. |
| Controlled outage | The break is isolated and the affected section depressurized deliberately, under control, rather than the system losing pressure on its own. | Notification to NJDEP is not routinely required, though a system may issue a precautionary advisory for site-specific sanitary reasons, and must tell NJDEP if it does. An advisory becomes mandatory where temporary service runs through overland lines that were not properly disinfected and flushed. |
| Low pressure event | Positive pressure is held in the main throughout the repair, using full circle clamps, sleeves and the like. While the main stays pressurized and water flows continuously out of the rupture, contamination is unlikely. | No NJDEP notification, no boil water advisory and no water quality testing required. This is why a repair made under pressure is worth engineering for rather than stumbling into. |
The clock, once pressure is lost
These are the deadlines a New Jersey water system is working to while the hole is still open. Worth knowing as a customer waiting on a notice, and worth knowing as a town.
| Within 1 hour | The water system notifies the mayor and the municipal clerk of every affected municipality, by telephone and by email, both. A boil water advisory is also expected to be issued in a timely manner, which the manual puts at within the hour. |
|---|---|
| Within 6 hours | Where notification is required, the water system contacts NJDEP: the hotline on 1-877-WARN DEP (1-877-927-6337), or the Bureau of Safe Drinking Water on (609) 292-5550 during business hours. |
| Within 24 hours | The outside limit for getting the boil water advisory to the affected population, under the Tier 1 public notice delivery requirements at 40 CFR 141.201 et seq. As soon as possible is the standard; 24 hours is the wall. |
| Within 10 calendar days | Copies of the boil water advisory and the Tier 1 Public Notification Certification Form go to NJDEP. |
Why the boil notice outlasts the repair
Because the water has to be proven clean, not assumed clean. The repair gets disinfected to the AWWA standard for disinfecting water mains, the mains get flushed, and then samples go to a New Jersey certified drinking water laboratory for total coliform, with chlorine residual measured at the same points. The minimum number of samples is not a judgement call, it is set by how many people the break affected.
| Population affected | Minimum samples |
|---|---|
| Fewer than 25 | At least one downstream of the repair, or one from each end if flow direction is uncertain |
| 25 to 1,000 | 3 |
| 1,001 to 2,000 | 4 |
| 2,001 to 3,000 | 5 |
| 3,001 to 4,000 | 6 |
| 4,001 to 7,000 | 7 |
| 7,001 to 10,000 | 8 |
| 10,001 to 50,000 | 9 |
| 50,001 to 130,000 | 10 |
| More than 130,000 | As directed by NJDEP |
Every requirement on this page comes from the NJDEP Division of Water Supply & Geoscience, Water Main Break Guidance Manual (March 2021). Also useful: NJDEP emergencies and security and public notification. Last reviewed 2026-09-18.
For water systems, authorities and towns
If the break is yours to fix, the work is main and valve repair, service connections, road opening and restoration, and getting the street back to a state the town will accept. We do that work as water and sewer main contractors, and it is quoted against the job rather than off a page. Public work has its own thresholds and paperwork, which we cover on selling to NJ towns.
A repair that holds pressure throughout, with full circle clamps or sleeves, is the version that avoids the advisory, the sampling and the notification entirely. That is worth planning for rather than discovering.
What it costs
- Water service replacement, curb to house: $8,000 to $10,000 for a 200 foot service.
- What moves it: the length of the run, the material the town will accept, rock and wet ground, and whether the line has to get under a driveway or a mature tree.
- Main repair: quoted against the job. It is utility work, and a number on a page would be a guess.
Our own northern New Jersey pricing, stated 2026-09-18.
What customers say about this work
We have a busy restaurant in Stanhope, Shakey Jakes. We had a water main break that needed 50 ft of digging. They started at 2 am in freezing cold weather so as not to interfere with business. They did as they said and were very professional.
I had two recent emergencies and James and his team responded the same day. Immediate callbacks even though they were busy, and the pricing was very fair. And he volunteers as an EMT. Five star ++ rating for sure.
Common questions
Who is responsible for a water main break in New Jersey?
The water system. The main in the street and the curb stop at the property line belong to your water purveyor, and repairing a break in the main is their work and their cost, not something a homeowner arranges or pays for. What you own in most New Jersey setups is the service line from the curb stop to the house. Where exactly that boundary falls is set by your water system's own tariff and it does vary, so confirm it with them before assuming either way.
Why did I get a boil water notice after a main break?
Because the system lost positive pressure and cannot prove that nothing entered the pipe while it was down. NJDEP's guidance treats that as an uncontrolled outage, and a boil water advisory is required, delivered as soon as possible and in no case later than 24 hours after the system learns of the incident. It is precautionary. It is not evidence that anything was found in the water.
How long does a boil water advisory last?
Until the repair has been disinfected, the mains flushed and water quality samples come back satisfactory from a New Jersey certified drinking water laboratory. The minimum number of samples is set by how many people the break affected, from three samples for a population of 25 to 1,000 up to ten for 50,001 to 130,000, and above that NJDEP directs it. That testing is why an advisory usually outlasts the repair itself by a day or more.
Does every water main break mean a boil notice?
No, and the difference is whether pressure was lost. NJDEP defines three types. An uncontrolled outage loses positive pressure and brings the full set of requirements. A controlled outage is isolated and depressurized deliberately and does not routinely require notification. A low pressure event, where the main is repaired under pressure using full circle clamps or sleeves and water keeps flowing out of the rupture, requires no notification, no advisory and no testing at all, because contamination is unlikely while the pipe never stops being pressurized.
How fast does a water system have to report a main break?
Where notification is required, NJDEP within six hours, through the hotline on 1-877-WARN DEP or the Bureau of Safe Drinking Water on (609) 292-5550 in business hours. Separately, the mayor and the municipal clerk of every affected municipality have to be notified no later than one hour after the system becomes aware, by telephone and email both. Copies of the advisory and the Tier 1 certification form go to NJDEP within ten calendar days.
There is water coming up through the road. What do I do?
Call your water purveyor and keep away from it. A main break moves enough water to wash the support out from under pavement that still looks solid, so the hole you cannot see is the hazard, along with anything electrical the water has reached. If you do not know who supplies your water, we keep a list of every New Jersey purveyor.
Do you repair water mains?
Yes, for water systems, authorities and municipalities, which is who owns them. That is main and valve work, service connections, road opening and restoration, and it is quoted against the job rather than off a page. For homeowners, the work we do is the service line from the curb to the house.
How much does it cost to replace a water service line in NJ?
With us, $8,000 to $10,000 for a 200 foot service, quoted against a stated distance on purpose, since a price with no length attached is not something you can compare. What moves it: how long the run is, the material going in and what the town will accept, rock and wet ground, and whether the line has to cross a driveway or a mature tree, which can turn an open cut into a bore.
Main break, or a service line that finally gave out?
If it is the main, call your water system first. If it is the line from the curb to your house, that is ours. 24/7 for emergencies.
Call 862-268-2510