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TRUSTED BY DANBURY, CT HOMEOWNERS

  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon1.2k+
    Verified sump pump installation services reviews

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

Avatar for TC' s Plumbing & Heating LLC
TC' s Plumbing & Heating LLC
4.8(
230
)
Sump Pump or Interior Foundation Drains - Install

Serving Danbury, CT and surrounding areas

Approved

In business since 1997

Free estimates

Warranties offered

"They called back immediately from my initial message. They came first thing in the morning and by noon my new water heater was installed and up and running. They went over and beyond what I have ever experienced with other plumbing technicians.They explained everything up front and I found them to be highly knowledgeable. I would highly recommend this company and they have acquired a new lifelong customer based on their performance dealing with my situation."
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Recommended by98%of homeowners
Avatar for Groundworks
Groundworks
4.9(
13
)
Sump Pump or Interior Foundation Drains - Install

Serving Danbury, 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

482 neighbors recently requested a quote
Avatar for Connecticut Basement Systems, Inc.
Connecticut Basement Systems, Inc.
4.3(
589
)
Sump Pump or Interior Foundation Drains - InstallSump Pump - Repair or Replace

Serving Danbury, CT and surrounding areas

Approved

In business since 1987

Free estimates

Warranties offered

"I posted an initial review on 2/21/19 on a job done on 1/11/19 to fix groundwater from coming into our basement. The drainage system and sump they installed was not collecting all the water that was coming in, as we had leaking from several areas along an uneven rock ledge. I had reached out to our salesperson by phone and email and never heard back, so I was very frustrated. About 3 weeks after I posted the review, I did get a call from Jeff Allen, one of the supervisors. To make a long story short, he sent out one of their waterproofing specialists to look at the problem. We had already hired an independent mason to try to remedy the problem but he had not yet had a chance to do the job. Jeff convinced me that CT Basement systems would do absolutely whatever it took to fix my water problem. I cancelled the independent mason. Danny, a mason from CT Basement Systems came out and used a very ingenious method to divert all the water to the originally installed water guard trough and then to the sump. It is working beautifully!! I think Danny is a genius and I am so impressed and thankful for Jeff's perseverance and kindness in making this happen. I am now a very happy customer."
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+12

178 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for The Builders & Cleaners
The Builders & Cleaners
4.9(
122
)
Sump Pump - Repair or ReplaceSump Pump or Interior Foundation Drains - Install

Serving Danbury, CT and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"A soft wall due to improperly installed gutter by some other entity or homeowner caused water to constantly leak into the wall from the exterior roofline. This soft wall grow moldy and become riddled with pests/bugs. The contractor identified the potential issues, agreed to explore and open the walls and discuss the conditions, made sound recommendations for repair and did exactly what was noted in the repair (replaced a load bearing exterior wall, fixed the sill plate, completed the roof, shingles etc. and closed up the walls on the inside with insulation and sheet rock.). The work was timely, well done, the workers were clean as they did the job and kept the rest of the property clean. The manager of the job David Apel was and is an excellent communicator with phone/email/text and photos of processes and progress. I am going to use this company in my own investment endeavors on other properties and projects given the level of finished work, the timing and especially the level of detailed communication."
Dust out from the ductwork
Dust out from the ductwork
Clean vent
Clean vent
Dust in the return

+1836

Response time1 day
Response rate92%
Recommended by85%of homeowners
EcoFlow, LLC
5.0(
9
)
Sump Pump - Repair or Replace

Serving Danbury, CT and surrounding areas

Approved

In business since 2014

Free estimates

Warranties offered

"Eco Flo Plumbing spent a lot of time preparing an estimate for me. The company also made two visits to my home for thorough inspections of my job site. The price quoted to me was fair and reasonable, and the sales person was extremely personable! I Wholeheartedly Recommend EcoFlow !"
Response time5 hrs
Response rate89%
4 neighbors recently requested a quote
Avatar for Atomic Rooter Inc
Atomic Rooter Inc
4.5(
126
)
Sump Pump or Interior Foundation Drains - Install

Serving Danbury, CT and surrounding areas

Approved

In business since 1977

Free estimates

Emergency services offered

"Steven was the absolute best… arrived at the very start of only a two hour window, fixed the problem in about an hour. Very polite and courteous. I called three plumbers and he was the first to call me back and the only one who would give me a ballpark figure over the phone. The others wanted to come out and have a look for $70. even though I accurately described the job in detail. I’m thrilled to have a reliable plumber! A more than satisfied customer, Lora Harrigan"
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+6

Response time8 hrs
Response rate100%
1 neighbors recently requested a quote
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Showing 1-10 of 196
Sump Pump Installation FAQs, answered by experts

Yes, many providers offer warranties for new pumps and labor. Confirm terms before scheduling.

If you have a self-cleaning washing machine but you’re still seeing lint, your water pump filter might be clogged. To clean it, you should unscrew the drain hose, then remove the water pump filter. From there, you can inspect it and clean it with warm water before replacing it. Check to be sure your washing machine is functioning by running a short cycle. 

To test for toilet leaks, use water coloring in the water tank and see if the water slips into the bowl from the tank. This test will indicate if there’s a problem with the flapper or refill tube. You can also put water coloring in the bowl of the toilet to see if there is a leak there. If there is, you should see the colored water on the outside of the toilet bowl or on the floor. 

Several indicators suggest it's time for a sump pump replacement. A key factor is age; if the pump is over 10 years old, its lifespan is likely ending. Performance issues are also clear signs, such as the pump running constantly, cycling on and off frequently, making unusual noises or vibrations, or failing to function at all. A faulty or burnt-out motor is another definite sign a replacement is needed. Additionally, if you notice any signs of incorrect installation, the pump should be replaced. For a definitive diagnosis, a vetted plumber can assess the pump and confirm whether a replacement is necessary.

DIY is possible for simple repairs. Professional services ensure proper diagnostics and long-term reliability.

The Danbury, 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.