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TRUSTED BY COS COB, CT HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon874
    Verified plumbing services reviews

Top-Rated Plumbers in Cos Cob - Updated Nov 2026

Avatar for Atomic Rooter Inc
Atomic Rooter Inc
4.5(
126
)
Drain Clog or Blockage - ClearDrain Clog or Blockage - Clear - For BusinessDrain Line Breakage - Camera Locate+8 more

Serving Cos Cob, 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
Avatar for First String Plumbing, Heating & Cooling
First String Plumbing, Heating & Cooling
5.0(
10
)
Faucets, Fixtures and Pipes - Repair or ReplacePlumbing for a Remodel or Addition - InstallSump Pump - Repair or Replace+10 more

Serving Cos Cob, CT and surrounding areas

Approved

In business since 1983

Free estimates

Emergency services offered

First String Plumbing, Heating & Cooling is built on over four decades of hands-on, master-level experience paired with modern equipment, straightforward pricing and a commitment to serving our neighbors near and far.\n\nWe believe every homeowner in Connecticut and New York deserves a team they can count on whenever they need help. When the lights are at their brightest and all eyes are on us, we will always do what is right and that commitment never fades.

Tankless Water Heater
Water Pipe Repair
Water Pipe Repair
Water Heater Install
14 neighbors recently requested a quote
Avatar for Rodris Rooter LLC
Rodris Rooter LLC
4.8(
24
)
Drain Clog or Blockage - ClearSewer Main - ClearSewer Main - Install, Replace or Repair+3 more

Serving Cos Cob, CT and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Emergency services offered

"Went well. I thought that I might need a new trap or elbow since water was leaking. As it turned out, it was the sprayer that was leaking and not the elbow. The tech did not try to oversell me all new plumbing and I appreciate that."
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+50

Response time5 hrs
Response rate100%
3 neighbors recently requested a quote
Avatar for All Star Rooter LLC
All Star Rooter LLC
4.8(
28
)
Sewer Main - ClearDrain Clog or Blockage - ClearDrain Clog or Blockage - Clear - For Business+3 more

Serving Cos Cob, CT and surrounding areas

Approved

Super Service Award Winner

In business since 2011

Free estimates

Emergency services offered

"I've used All Star Rooter on three occasions and have been very pleased with the work provided. Always professional, punctual and careful, they are specialists. An important indicator of their skill is their position in the industry - three different plumbing companies have recommended All Star Rooter. They will calmly approach a stressful situation and do their best to reach a successful outcome. On this occasion they were able to clear an on-going clog efficiently."
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+9

1 neighbors recently requested a quote
Recommended by85%of homeowners
Avatar for Gallery Of Kitchens & Baths
Gallery Of Kitchens & Baths
4.8(
70
)
Bathtub Install or ReplaceBathtub Install or Replace - For BusinessShower Install or Replace+2 more

Serving Cos Cob, CT and surrounding areas

Approved

Super Service Award Winner

In business since 1990

Free estimates

Emergency services offered

"The team from Gallery of Kitchens & Baths gave our bathroom the upgrade it desperately needed. The Salvatori marble vanity and Pittori cabinetry make it feel brand new and incredibly stylish. The craftsmanship, communication, and professionalism throughout the process were outstanding. Kudos to them!"
Contemporary kitchen.
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+83

5 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for H L Bowman
H L Bowman
4.6(
429
)
Drain Clog or Blockage - ClearWater Heater - Install or ReplaceWater Main - Install, Replace or Repair+6 more

Serving Cos Cob, CT and surrounding areas

Approved (Corporate)

In business since 1946

Free estimates

Emergency services offered

"I had plumbing leaks in a couple of places, but the men that did the work went above and beyond by replacing every component involved top to bottom to ensure there would be no leaks for a long time to come. Very satisfied with the quality of work as well as how quickly it was done."
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+6

488 neighbors recently requested a quote
Recommended by86%of homeowners
Avatar for Candito Plumbing and HVAC, LLC
Candito Plumbing and HVAC, LLC
4.5(
28
)
Bathtub Install or ReplaceFaucets, Fixtures and Pipes - Repair or ReplaceFaucets, Fixtures and Pipes - Repair or Replace - For Business+8 more

Serving Cos Cob, CT and surrounding areas

Approved

In business since 2010

Free estimates

Offers commercial services

"I can’t speak highly enough about John. He responded immediately to fix a problem with a leaking toilet (required new toilet and pipe repair and coordinated the repair work with a great contractor. I highly recommend hiring John. Great work, great price. Great guy ???"
Roof top unit
Roof top unit
Kohler carrier for wall hung toilet
wall hung toilet
Wall hung toilet

+7

Response time1 day
Response rate89%
Recommended by84%of homeowners
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Plumbing FAQs, answered by experts

Soda, coffee, and other soft drinks are highly acidic. This affects the pH in septic tanks, causing them to require more frequent pumping. However, a vast majority of people don't need to worry about septic system disruption. Pouring out the occasional flat soda doesn’t affect septic systems to the same degree as the high-volume dumping from restaurants and convenience stores.

Yes, because any trapped moisture can have a negative impact on the integrity of the wall or façade of the building. Per the 2015 International Residential Code and Commentary: “Weepholes shall be provided in the outside wythe of masonry walls at a maximum spacing of 33 inches (838 mm) on center. Weepholes shall be not less than 3/16 inch (5 mm) in diameter. Weepholes shall be located immediately above the flashing.”

Never pour used motor oil down the drain. Doing so can have serious environmental consequences, including contaminating groundwater, endangering animals, and killing vegetation. It can also clog your pipes, causing backups in your plumbing or the wastewater treatment plant. In most places, pouring motor oil down the drain is illegal, whether you do it in your home or a storm drain.

Yes, you can turn your water back on after you hire an emergency plumber and this professional completes the repairs. Your plumber probably will turn on the water for you, just to test the repairs and look for any other problems. Otherwise, if the plumber doesn’t turn it back on, it’s safe to do it yourself. Open the valve or knob slowly to prevent an unwanted rush of air from getting into your pipes.

No, the pink ring in your toilet bowl isn’t a hard water stain but a type of bacteria called Serratia marcescens. This bacteria can also cause pinkish stains in other areas of your bathroom, like around your tub, shower curtains, and faucets. Thankfully, it’s considered to be harmless. However, if you or anyone in your household is immunocompromised, it can cause issues like urinary tract infections. You can clean the pink ring with bleach and a plastic brush. Wear gloves and goggles when using bleach, and always work in a well-ventilated room.

The Cos Cob, CT homeowners’ guide to plumbing services

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