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TRUSTED BY GREENWICH, CT HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon862
    Verified sump pump installation services reviews

Top-Rated Sump pump installation pros in Greenwich - Updated Nov 2026

Avatar for Budget Dry Waterproofing, Inc.
Budget Dry Waterproofing, Inc.
4.4(
240
)
Sump Pump or Interior Foundation Drains - InstallSump Pump - Repair or Replace

Serving Greenwich, CT and surrounding areas

Approved

Super Service Award Winner

In business since 2006

Free estimates

Emergency services offered

"Our service person was Bill Fanning. He was excellent and explained everything in full detail! Bill was polite and respectful, and advised us on the best new sump pump to replace our non-working sump pump."
Drain at base of bilco
going up on the wall
finished wall area
completed
finished sump pump area

+37

Response time1 day
145 neighbors recently requested a quote
Recommended by86%of homeowners
Avatar for Groundworks
Groundworks
4.9(
13
)
Sump Pump or Interior Foundation Drains - Install

Serving Greenwich, CT and surrounding areas

Approved (Corporate)

Super Service Award Winner

In business since 2025

Free estimates

Warranties offered

Groundworks is the North America's leading and fastest-growing foundation repair and water management solutions provider. Groundworks is a vertically integrated company with its own manufacturing operations and a world-class software solution, allowing us to serve our customers more effectively. From the first phone call to the annual maintenance offered, our customers have peace of mind knowing we're there with one mission to repair, protect and improve their home. For state licenses visit Groundworks.com/licensing

Foundation
Foundation
Foundation
Concrete
Concrete

+16

415 neighbors recently requested a quote
Avatar for Aldos plumbing
Aldos plumbing
5.0(
35
)
Sump Pump - Repair or ReplaceSump Pump or Interior Foundation Drains - Install

Serving Greenwich, CT and surrounding areas

Approved

Free estimates

Emergency services offered

Small jobs welcome

"I texted him and he came out after 30 minutes. It was super quick and amazing. He showed me that it was just a silt underneath the pump and also showed me what to do for future problems. It was a quick job and he's our go to guy for a plumbing work."
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+41

1 neighbors recently requested a quote
Recommended by44%of homeowners
Avatar for Advanced Professional Management, LLC
Advanced Professional Management, LLC
4.2(
939
)
Sump Pump or Interior Foundation Drains - Install

Serving Greenwich, CT and surrounding areas

Approved

In business since 1999

Emergency services offered

Warranties offered

"They came out on a weekend and we're our saving grace during one of the most frustrating experiences we've had in this house. We couldn't use any plumbing without flooding the basement with sewage, it was early stay at home days, and we felt like we would go mad. They showed up and gave us an price for replacing the broken pipe, and set in to work. They worked for the entire weekend essentially, staying extremely late at night and showing up early the next morning, and at one point driving far out at night to get supplies since their usual local place was closed (again, quarantine time) . The reason it took so long was because after opening up the floor to get to the end of the pipe to replace it they found more damaged pipes, and replaced those as well. By the end of it they had spent the entire weekend on a job they expected to only last an afternoon, had charged us not nearly enough for the amount of work they did, and fixed a leaking bidet we had for free for good measure. They also advised us to do camera scan to look for any other problems, which they couldn't do until the water drained out, and even did an initial mop of the basement (which, remember, sewage flooding). I'm honestly half convinced these people are magic helpful brownies or something, it's unreal how helpful they were! Somehow our drier which has not succeeded in drying clothes for over a year has started working in a single cycle since they left, despite the fact they didn't even do anything with it, and in fact specifically said they don't do driers and offered to recommend someone else when we mentioned it. Suffice to say, I cannot recommend them highly enough"
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+33

Response time11 hrs
Response rate100%
3 neighbors recently requested a quote
Avatar for Atomic Rooter Inc
Atomic Rooter Inc
4.5(
126
)
Sump Pump or Interior Foundation Drains - Install

Serving Greenwich, CT and surrounding areas

Approved

In business since 1977

Free estimates

Emergency services offered

"The service person came promptly and was able to install the faucet and a trash disposal unit that had been taken out when the countertop was replaced.  There was a slight adjustment that needed to be made in the piping for the trash disposal unit.  Everything was done in a professional manner.  However, the price was a bit high in my opinion to just put back what was disconnected.
"
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+6

Response time8 hrs
Response rate100%
1 neighbors recently requested a quote
Avatar for Cassidy Plumbing and Heating, Inc
Cassidy Plumbing and Heating, Inc
4.5(
32
)
Sump Pump - Repair or ReplaceSump Pump or Interior Foundation Drains - Install

Serving Greenwich, CT and surrounding areas

Approved

Super Service Award Winner

In business since 1992

Emergency services offered

Warranties offered

"I had lost water pressure on Saturday and made a emergency call to a unknown company from google. I talked to a person immediately from Cassidy Plumbing and was told I would get a call from an employee in one hour. An employee called and would come over in 15 minutes. I was amazed at the response time. He check out my water system thoroughly and told me that I wasn't getting water in the well tank causing me to lose pressure but also I was not getting any pressure straight from the well either. It was either the water pressure tank with the pressure switch or the water pump that was causing this problem. The pressure gauge was also broken. He explained fully what needed to be done, the price for each issue and since he was not able to do anything until Monday, I was first on the list.
Cassidy Plumbing called me in the morning and told me that they would be their in one hour. They came promptly and went to the well tank first and found out the pressure switch had corroded and the well tank was also not doing it's job. The tank was about 15 years old and the switch was more than 25 years old. I was told and saw everything that needed to be replaced and the price. When replacing the valve close to the water filter housing the piping broke off and upon looking at it this was corroded too! I was able to get a discount for the water filter housing since they were working on that section of piping and it was unexpected. Afterwards they tested the water pressure to make sure all was working and that the register near the pressure switch was functioning.
My water room is the size of a closet. Inside is the water heater, water softener system (tank for salt and two tall cylinders), electrical box, telephone box, cast iron plumbing for toilet and the well tank. It was tight to say the least and they did a neat job of putting everything together and cleaning up.
I have had to replace my well pump and another time the electrical wiring to the pump and both these companies could not compare to the professionalism and services that Cassidy Plumbing and Heating."
Heating System
Heating System
Plumbing
The Team
Navien Water Heater

+3

Response time2 days
Response rate100%
8 neighbors recently requested a quote
Avatar for MVP Plumbing and Heating, LLC
MVP Plumbing and Heating, LLC
4.7(
18
)
Sump Pump - Repair or Replace

Serving Greenwich, CT and surrounding areas

Approved

In business since 2012

Free estimates

Emergency services offered

"Matt was quick to respond to my enquiry. Prompt for the appointment and did excellent work. He was very helpful with other plumbing questions and issues I had around the house. I've had him back to install a waste disposal, an outside faucet and change two sinks in the master. Highly recommend."
Faucet
Modern Powder room
Wall mount faucet
Navien Combi
Old boiler

+1

Response time1 day
Recommended by100%of homeowners
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Sump Pump Installation FAQs, answered by experts

Submersible and pedestal sump pumps are two popular types of sump pumps. Submersible models are covered by water in a sump pit, which helps keep the motor cooler and quieter. Pedestal sump pumps stick out of the sump pit, so the motor stays dry and is easier to access. Submersible sump pumps are the pricier option, but they also have longer life spans.

Sewer ejector pumps need to be cleaned at least once a year by a professional. You shouldn’t attempt to clean it yourself because it can release sewer gasses that are toxic to humans and can be fatal. But to keep the system as clean as possible between professional inspection and cleaning services, be sure to only flush human waste and toilet paper. Avoid flushing items that can clog the system, like paper towels, grease, oil, or menstruation products.

Sump pump repairs are typically handled by plumbers or waterproofing specialists who are experienced in handling basement and foundation-related issues. Plumbers can address issues like clogs, electrical problems, and mechanical failures, and waterproofing professionals may be ideal if the sump pump is part of a larger drainage or waterproofing system. 

Some people may also call on a general handyperson for minor sump pump repairs. However, for complex problems, hiring a certified plumber or waterproofing expert ensures the work is done correctly and prevents further issues.

No. Sump pumps have different capacities, which refers to the volume of water that they can remove. They also come in various horsepower ratings, which measure the size of the pump’s motor. For many homes, 1/3 horsepower is enough. But if you live in an area that floods often, you might need a more powerful model.

You shouldn’t shower while a sump pump isn’t working. Although household wastewater isn’t supposed to go into the sump pit, it’s best to wait to shower until your sump pump is running properly and able to move excess water out of the basement. If you need to shower when the sump pump isn’t working, aim for a short shower.

The Greenwich, CT homeowners’ guide to sump pump installation services

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