For a typical 50-foot water line installed with a trench, the water line replacement cost is about $2,700 to $8,000, permit included. That single pipe runs from the meter at the street into your home, and what you pay comes down mainly to its length and how the new pipe gets installed. Treat those numbers as ballpark figures for a house of that kind, since a company can only give you a firm price after looking at your yard.
Cost per foot by method
Since companies charge by the foot, the distance from the meter to your house drives most of the bill. Trenching runs $50 to $150 a foot, while trenchless installation runs $75 to $150 a foot, per Angi's water main replacement guide.
Trenchless work means the crew pulls the new pipe underground without tearing open your whole yard along the route. Its starting price per foot is higher, so on a short line it isn't automatically the cheaper choice.
| Method | Cost per foot | Typical total, 50-foot line |
|---|---|---|
| Trench | $50 to $150 | roughly $2,700 to $8,000 |
| Trenchless | $75 to $150 | roughly $3,900 to $8,000 |
The permit is already counted in both of those figures. Pace off the distance from your meter to the spot where the pipe enters your house, because nothing else moves your price as much as that measurement.
Is trenchless worth it?
Sometimes, but for a short run the answer is often no. On a 50-foot line, trenchless begins around $1,200 higher because the floor is $75 per foot rather than $50, though both methods top out at the same $8,000.
The real value of trenchless is what it leaves untouched. A trench slices straight through the lawn, the driveway, or whatever else sits above the pipe, and fixing those surfaces isn't in the per-foot price. When the line passes beneath a patio or a big established tree, have the company price out both methods so you can compare the totals directly.
Permit and inspection fees
The permit is the city's official go-ahead for the job, and the inspection happens at the end, when a city official checks the pipe before the hole gets filled back in. Angi puts the two together at $150 to $500, and that figure is already baked into the 50-foot estimates.
Don't be surprised to see this fee on your quote even for a small job. It stays the same no matter how short the line is, so it takes a bigger bite out of the bill on short runs than long ones.
The case for swapping out a lead service line
A service line is simply that same pipe running from meter to house, and roughly 4 million of them across the US are still lead, per the Environmental Protection Agency. The odds are highest in older homes.
According to the EPA, swapping out a lead service line cuts down on lead exposure by taking lead out of your water's path entirely. If your pipe turns out to be lead, a replacement does more than fix a leak, so find out what material your line is made of before choosing between repair and replacement.
Getting a fixed price
These ranges assume a 50-foot run, and conditions on your property could push the number either way. A water line company inspects the meter, the path to the house, and everything sitting over it, and then quotes you one fixed price for the whole job.
When you line up quotes, keep the run length and the method in mind. Two bids on the same house can look wildly different simply because one plans a trench and the other plans trenchless.
Common questions
Does insurance pay for the main water line?
In most cases, no. New York City's Department of Environmental Protection states it directly: water and sewer service line repairs can run into the thousands, and most home insurance policies won't pay for them. Your own policy might say otherwise, so check it or call your insurer before assuming anything.
What will installing a new water line set you back?
Per Angi, a trenched replacement can land anywhere between $1,500 and $13,000, and the range is that broad because at $50 to $150 a foot, a long run adds up quickly. Short, simple lines sit at the low end, and long runs with lots of ground to open sit at the high end.
Are plumbers the ones who handle water line work?
Yes, and in most places the law says only they can. Angi points out that local rules in most towns call for a licensed plumber on this kind of job, so check the license before anyone puts a shovel in the ground.
What does a 100 foot water line run you?
For a 100-foot line installed with a trench, the estimate lands near $5,200 to $15,500 once the permit is counted. Doubling the length roughly doubles both materials and the crew's time, which is why the high end nearly doubles the high end for a 50-foot line.