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Top-Rated Water main install, replace or repairers in New London - Updated Nov 2026

Avatar for Diamond Plumbing & Heating, LLC
Diamond Plumbing & Heating, LLC
3.7(
86
)
Water Main - Install, Replace or Repair

Serving New London, CT and surrounding areas

Approved

Super Service Award Winner

In business since 2003

Emergency services offered

Warranties offered

"Amir and team were prompt and delivered on a challenging well to city water conversion project. Very strong work ethic and they take pride in what they do. Would have given full five stars if they had told us they would giving us a better heads up that they needed to work into the night to finish the project."
4 High Efficiency Combi Install
Sewer main replacement
Surrey Ln
Clay sewer main replacement
Clay sewer main replacement

+13

5 neighbors recently requested a quote
Recommended by84%of homeowners
Befitting Plumbing & Heating LLC
5.0(
3
)
Water Main - Install, Replace or Repair

Serving New London, CT and surrounding areas

Approved

In business since 2023

Free estimates

Credit card accepted

"Had a client in a multi family situation who needed a tremendous amount of existing cast iron replaced in one day. Matthew was hired to remove and replace with new pvc. Got it done in a timely manner so residents would not be down all day and could turn the water back on quickly.Would highly recommended to anyone with all plumbing repairs."
Response time2 days
Recommended by66%of homeowners
Avatar for At Your Service Plumbing & Heating, LLC
At Your Service Plumbing & Heating, LLC
4.7(
46
)
Water Main - Install, Replace or Repair

Serving New London, CT and surrounding areas

In business since 2016

Free estimates

Emergency services offered

"In the time of COVID-19, my husband and I had a hard time finding a plumber to come out as swiftly as possible when we noticed discoloration on the wall behind our toilet. Tim came recommended through another, very similar reviewing and contracting website, and we could not be happier. Within an hour of speaking with him, he was at our house assessing the job. He removed the toilet, cut into our wall (very carefully and as neatly as possible), replaced our original copper piping with pex tubing, and reinstalled the toilet - all on the same day. I could not be happier with how quickly and efficiently he got us back up and running, as this is our only bathroom. We received our invoice promptly with a detailed explanation of the work performed and also a picture of the repair. Very fair pricing for the extensive emergency repair required. I plan on using Tim again for all future plumbing work. We highly recommend him!"
Our Work
Our Work
Our Work
Our Work
Our Work

+46

Response time8 hrs
Recommended by88%of homeowners
Avatar for Griswold Plumbing Services, LLC
Griswold Plumbing Services, LLC
4.6(
132
)
Water Main - Install, Replace or Repair

Serving New London, CT and surrounding areas

In business since 2009

Emergency services offered

Credit card accepted

"The servicemen were exceptionally polite, knowledgeable and professional. They diagnosed a long standing problem that other plumbers did not and fixed it right then and there. I thought the price for putting in the new vent on the pump was great ($475). $200 for cleaning out the shower drain (full of hair visible to the eye after they popped the cover to show me) was a little high. But I would definitely hire again if needed. Thank you!"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+9

Recommended by93%of homeowners
Avatar for Pacific Stone & Tile
Pacific Stone & Tile
4.6(
321
)
Water Main - Install, Replace or Repair

Serving New London, CT and surrounding areas

In business since 2007

Free estimates

Credit card accepted

"Pacific Stone did a nice job. Person in charge of scheduling measurements and installation was pleasant and courteous. Within a few days of my inquiry they came out to my house to take measurements and they brought samples to choose from. Installation was done within a few weeks after that. Took away the old countertops and sinks. They know what they're doing. One of the installers was actually the owner and they were prompt and professional and cleaned up well."
boston job
boston job
w boyston job
Albany ny
marlboro ma

+3

Recommended by91%of homeowners
Avatar for SSA Home Improvement LLC
SSA Home Improvement LLC
5.0(
9
)
Water Main - Install, Replace or Repair

Serving New London, CT and surrounding areas

In business since 2006

Free estimates

Emergency services offered

"It took a little longer than anticipated, but the over all work was done to my satisfaction.
I originally picked the paint color off the website and after they painted the first coat, I didn't like it, but I asked them to repaint with a new color and it was done as I requested."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+16

Recommended by100%of homeowners
Avatar for Drain Blasters
Drain Blasters
5.0(
9
)
Water Main - Install, Replace or Repair

Serving New London, CT and surrounding areas

In business since 2020

Emergency services offered

"We called Don for our septic inspection and to check on some plumbing concerns we had with our house and I just have to say we were amazed. Not only did he fit us right into the schedule, he was extremely thorough and efficient. It's not often you have someone so easy to work with and extremely timely. 10/10 recommend and will absolutely be using hin for any future hiccups/needs. Trust me, you need to call him if you need anything done!! Absolutely impressed"
Recommended by100%of homeowners
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FAQs for water main install, replace or repair projects in New London, CT

Most standard homeowners' policies don’t cover water main line replacement costs because this project is considered wear and tear, not sudden damage. Check your declarations page for exclusions and talk with your agent about add-on service-line coverage if you want help footing the bill for your water main line replacement costs.

Yes—hire a licensed plumber any time the job taps into a city-owned line or local codes. Professional plumbers carry the right permits, tools, and insurance, and they know how to avoid costly mistakes that could flood your yard or trigger fines. Pros can also provide expert recommendations on the type of system and materials that will work best for your situation, and they can guide you on best practices for ongoing maintenance.

The New London, CT homeowners’ guide to water main install, replace or repairs

From average costs to expert advice, get all the answers you need to get your job done.