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There are 40 highly-rated local plumbers.
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Verified Reviews for Plumbing pros in Cos Cob, CT
*The Angi rating for Plumbing companies in Cos Cob, CT is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Plumbing needs.
*The HomeAdvisor rating for Plumbing companies in Cos Cob, CT is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Plumbing needs.
Last update on October 04, 2025
Find Plumbers in Cos Cob

Drain Away Sewer Service Inc
Drain Away Sewer Service Inc
At Drain Away Sewer Service, Inc., we put our customers needs first! We offer a range of drain services and we know that our customer's are the backbone of our success. Response times are quick through our 24-hour emergency service and we pride ourselves on providing competitive, up-front costs. Whether you take advantage of our maintenance and service contracts for savings, or you use us for one-time emergency services, Drain Away Sewer Service, Inc. will deliver on professional, reliable and quality work. Drain Away Sewer Service, Inc. provides both residential and commercial drain cleaning services 24 hours a day, 7 days a week and 365 days per year. Offering over 10 years of experience in the drain cleaning business, our qualified staff is prepared to handle everything from a clogged toilet to main sewer services. We are centrally located to service both Westchester and Fairfield Counties.
"Richard from Drain Away service came out the next day and fixed the clogged drain. He was also very helpful with getting Servpro out to do clean up. Richard provided full and efficient services. Very pleasant and reasonably priced. I would definitely recommend Drain Away for any plumbing issues and would use them again if needed."
Paula A on February 2025
At Drain Away Sewer Service, Inc., we put our customers needs first! We offer a range of drain services and we know that our customer's are the backbone of our success. Response times are quick through our 24-hour emergency service and we pride ourselves on providing competitive, up-front costs. Whether you take advantage of our maintenance and service contracts for savings, or you use us for one-time emergency services, Drain Away Sewer Service, Inc. will deliver on professional, reliable and quality work. Drain Away Sewer Service, Inc. provides both residential and commercial drain cleaning services 24 hours a day, 7 days a week and 365 days per year. Offering over 10 years of experience in the drain cleaning business, our qualified staff is prepared to handle everything from a clogged toilet to main sewer services. We are centrally located to service both Westchester and Fairfield Counties.
"Richard from Drain Away service came out the next day and fixed the clogged drain. He was also very helpful with getting Servpro out to do clean up. Richard provided full and efficient services. Very pleasant and reasonably priced. I would definitely recommend Drain Away for any plumbing issues and would use them again if needed."
Paula A on February 2025

Westfair Water Systems, Inc.
Westfair Water Systems, Inc.
Award Winning Water Treatment Company. A+ BBB Rating. Westfair Water Systems has been a leading force in the water treatment industry in Westchester and Fairfield Counties for over 15 years! Our Certified Technicians are trained to deal with the most complex water situations. We pride ourselves on customer service and satisfaction. Call to Schedule a FREE WATER TEST, estimate or appointment today!
"excellent installation"
Abe R on June 2025
Award Winning Water Treatment Company. A+ BBB Rating. Westfair Water Systems has been a leading force in the water treatment industry in Westchester and Fairfield Counties for over 15 years! Our Certified Technicians are trained to deal with the most complex water situations. We pride ourselves on customer service and satisfaction. Call to Schedule a FREE WATER TEST, estimate or appointment today!
"excellent installation"
Abe R on June 2025

All Star Rooter LLC
All Star Rooter LLC
***WE DO NOT OFFER INSTALLATION OR REPLACEMENT OF SEWER LINES*** ***WE SPECIALIZE IN CLEANING AND CLEARING OF SEWERS AND DRAINS*** All Star Rooter offers dependable sewer and drain cleaning services to Fairfield and New Haven County, CT and the surrounding area. With over 30 years of experience, we provide the best possible service to ensure that your drains and sewer stay in proper working order at affordable prices. Our services include professional sewer and drain cleaning, video inspections, water jetting, and clearing of leader lines. There are many factors that cause sewers and drains to backup. Our video inspection service will find out exactly what we are dealing with. Also, our water jetting system will remove most problems with your drain lines or sewer lines. We proudly serve all of Fairfield and New Haven Counties, including Greenwich, Norwalk, Danbury, Stamford, Bridgeport, New Haven, Ansonia, Orange, Milford and the surrounding communities.Plumber. 15 years of experience.
"Awesome job! Very happy"
Monalisa H on July 2025
***WE DO NOT OFFER INSTALLATION OR REPLACEMENT OF SEWER LINES*** ***WE SPECIALIZE IN CLEANING AND CLEARING OF SEWERS AND DRAINS*** All Star Rooter offers dependable sewer and drain cleaning services to Fairfield and New Haven County, CT and the surrounding area. With over 30 years of experience, we provide the best possible service to ensure that your drains and sewer stay in proper working order at affordable prices. Our services include professional sewer and drain cleaning, video inspections, water jetting, and clearing of leader lines. There are many factors that cause sewers and drains to backup. Our video inspection service will find out exactly what we are dealing with. Also, our water jetting system will remove most problems with your drain lines or sewer lines. We proudly serve all of Fairfield and New Haven Counties, including Greenwich, Norwalk, Danbury, Stamford, Bridgeport, New Haven, Ansonia, Orange, Milford and the surrounding communities.Plumber. 15 years of experience.
"Awesome job! Very happy"
Monalisa H on July 2025

Rodris Rooter LLC
Rodris Rooter LLC
My focus is to provide a professional and affordable service for all customers based on our expirienced technicians and high quality equipments ready to take care of any drain problem or any emergency 24/7
"Great , Perfect!"
Linda D on September 2025
My focus is to provide a professional and affordable service for all customers based on our expirienced technicians and high quality equipments ready to take care of any drain problem or any emergency 24/7
"Great , Perfect!"
Linda D on September 2025

Cassidy Plumbing and Heating, Inc
Cassidy Plumbing and Heating, Inc
We are a fully licensed and insured plumbing and heating service offering comprehensive services for plumbing and heating in Westchester NY, Putnam NY, Southern Dutchess and the surrounding areas. Our services include toilet repair, hot water heaters, leak repair, drain cleaning, boiler services and much more. A complete listing of the services offered by our professional plumbers can be found on our website. In addition to plumbing and heating services for existing homes and new construction, we offer 24-hour emergency service for plumbing emergencies. Check our website www.cassidyplumbinginc.com for our specials.
"Appointment made quickly, arrived on time, work done quickly. Made sure I was happy with the work.. Well done"
Michael W on June 2025
We are a fully licensed and insured plumbing and heating service offering comprehensive services for plumbing and heating in Westchester NY, Putnam NY, Southern Dutchess and the surrounding areas. Our services include toilet repair, hot water heaters, leak repair, drain cleaning, boiler services and much more. A complete listing of the services offered by our professional plumbers can be found on our website. In addition to plumbing and heating services for existing homes and new construction, we offer 24-hour emergency service for plumbing emergencies. Check our website www.cassidyplumbinginc.com for our specials.
"Appointment made quickly, arrived on time, work done quickly. Made sure I was happy with the work.. Well done"
Michael W on June 2025

Old Faithful Pump Co
Old Faithful Pump Co
We are an owner/operator company with 17 years of experience. We are committed to offering honest service and competitive prices. We use quality material and perform work to the highest standard to ensure longevity of the equipment you will rely on every day. We are a full service well pump & water treatment company offering 24 Hour Emergency Pump Service.We also offer water testing, water filtration, UV lights, water softeners and installation and service of water tanks.
"Joe is very experienced and very professional to replace my well pump, bring up the well cap to above ground level and installed house water filter. He discussed the job in detail and gave a fair quote. He came on time and did the job at high quality. He cleaned up everything before he finish. He took the 5% Angies list coupon as well. Will use him again and highly recommended if you need well pump service!"
Zeqiang G on September 2018
We are an owner/operator company with 17 years of experience. We are committed to offering honest service and competitive prices. We use quality material and perform work to the highest standard to ensure longevity of the equipment you will rely on every day. We are a full service well pump & water treatment company offering 24 Hour Emergency Pump Service.We also offer water testing, water filtration, UV lights, water softeners and installation and service of water tanks.
"Joe is very experienced and very professional to replace my well pump, bring up the well cap to above ground level and installed house water filter. He discussed the job in detail and gave a fair quote. He came on time and did the job at high quality. He cleaned up everything before he finish. He took the 5% Angies list coupon as well. Will use him again and highly recommended if you need well pump service!"
Zeqiang G on September 2018

Atomic Rooter Inc
Atomic Rooter Inc
For over thirty years we've made every effort to ensure our customer's satisfaction. From our conception we've adhered to traditional values, integrity being first and foremost. Perhaps the best fruit of our efforts is that over 75% of new business now stems from referrals. We understand the importance of good customer service and pledge to serve our customers with respect and professionalism. We would very-much like your business, but know full-well we must earn it. Atomic Rooter, Inc. is family owned and operated. We welcome your calls. Should you have any questions or require service, please do drop us a line.
"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"
Lora H on July 2024
For over thirty years we've made every effort to ensure our customer's satisfaction. From our conception we've adhered to traditional values, integrity being first and foremost. Perhaps the best fruit of our efforts is that over 75% of new business now stems from referrals. We understand the importance of good customer service and pledge to serve our customers with respect and professionalism. We would very-much like your business, but know full-well we must earn it. Atomic Rooter, Inc. is family owned and operated. We welcome your calls. Should you have any questions or require service, please do drop us a line.
"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"
Lora H on July 2024

Aldos plumbing
Aldos plumbing
At Aldo's Plumbing, serving the Tri-State Area, we prioritize customer satisfaction. Our expertise in water heaters ensures that your home projects are handled with care. Contact us today for a seamless experience!
"Everything went great. Aldo was the first to return my request for service on a Saturday afternoon and he came out Sunday morning showing up promptly. He was friendly and very efficient."
Paul R on May 2025
At Aldo's Plumbing, serving the Tri-State Area, we prioritize customer satisfaction. Our expertise in water heaters ensures that your home projects are handled with care. Contact us today for a seamless experience!
"Everything went great. Aldo was the first to return my request for service on a Saturday afternoon and he came out Sunday morning showing up promptly. He was friendly and very efficient."
Paul R on May 2025

Roto-Rooter Plumbing & Water Cleanup
Roto-Rooter Plumbing & Water Cleanup
When you need an emergency plumber or a drain cleaner, call Roto-Rooter Plumbing & Water Cleanup. Your fast & reliable plumber can fix any plumbing problem, including sump pumps, toilet repair, faucet repair, faucet replacement, garbage disposals, water heaters, bathtubs, showers, and outside faucets. Roto-Rooter is best known for drain cleaning & sewer cleaning. We fix drain clogs, clogged toilets or sinks, blockage of main sewer lines, slow draining shower and bathtub drains, sewer lines and leaking or burst pipes. We also specialize in water damage restoration & water cleanup services. We can fix and clean up your flooded basement too. Roto-Rooter is a 24-hour plumber near you and provides emergency service.
"They were a day late"
Tina D on August 2025
When you need an emergency plumber or a drain cleaner, call Roto-Rooter Plumbing & Water Cleanup. Your fast & reliable plumber can fix any plumbing problem, including sump pumps, toilet repair, faucet repair, faucet replacement, garbage disposals, water heaters, bathtubs, showers, and outside faucets. Roto-Rooter is best known for drain cleaning & sewer cleaning. We fix drain clogs, clogged toilets or sinks, blockage of main sewer lines, slow draining shower and bathtub drains, sewer lines and leaking or burst pipes. We also specialize in water damage restoration & water cleanup services. We can fix and clean up your flooded basement too. Roto-Rooter is a 24-hour plumber near you and provides emergency service.
"They were a day late"
Tina D on August 2025
Astacio Plumbing & Heating
Astacio Plumbing & Heating
What sets Astacio Plumbing and Heating apart from the rest of the field is the use of cutting edge technology to increase reliability, save you time and money, and improve safety on the job. Rich stays up-to-date on all the latest developments in plumbing and heating technology to determine how best to serve his customers. His trucks all carry the tools to get the job done on time and on budget, with as little disruption as possible. Astacio Plumbing and Heating has also spent years developing strong relationships with the best companies in the plumbing and heating business so that they can provide great service to you, quick delivery of replacement parts, and reasonable prices on excellent products. See website for additional service area. Additional email - [email protected].
"Dreadful experience. We had been customers of Astacio since 2015 when they installed our first tankless boiler which failed completely after 7 years and needed to be replaced in late 2022. ($10,000+) Their second one just stopped working; a dodgy board? The part is under warranty but they want almost $1,000 to replace it in the boiler; probably less than 2 hours work. I thought they used to be a good local business with ties to the community but be careful; their tankless boilers are unreliable and they'll try to rip you off when your heat goes out in the winter. So much for standing by their work. I'll never use them again."
CATHAL C on December 2024
What sets Astacio Plumbing and Heating apart from the rest of the field is the use of cutting edge technology to increase reliability, save you time and money, and improve safety on the job. Rich stays up-to-date on all the latest developments in plumbing and heating technology to determine how best to serve his customers. His trucks all carry the tools to get the job done on time and on budget, with as little disruption as possible. Astacio Plumbing and Heating has also spent years developing strong relationships with the best companies in the plumbing and heating business so that they can provide great service to you, quick delivery of replacement parts, and reasonable prices on excellent products. See website for additional service area. Additional email - [email protected].
"Dreadful experience. We had been customers of Astacio since 2015 when they installed our first tankless boiler which failed completely after 7 years and needed to be replaced in late 2022. ($10,000+) Their second one just stopped working; a dodgy board? The part is under warranty but they want almost $1,000 to replace it in the boiler; probably less than 2 hours work. I thought they used to be a good local business with ties to the community but be careful; their tankless boilers are unreliable and they'll try to rip you off when your heat goes out in the winter. So much for standing by their work. I'll never use them again."
CATHAL C on December 2024
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.
Repairing a main water line is an urgent matter, so use this guide to get an idea of how much main water line repairs cost to act fast.
- •
Discover the average water tank cost, including installation, maintenance, and tips to save. Get transparent pricing and expert advice for your home project.
This guide to toilet installation cost covers what you can expect to pay when adding a new toilet to an existing or new bathroom.
Replacing or upgrading plumbing in your home? Make sure you know how to measure pipe size accurately to avoid buying the wrong materials.
Wondering why your bath water is yellow? Find out what’s causing it, how to solve the problem, and when to call a plumber.
What is a Pittsburgh toilet? This relic of the past (also known as a “Pittsburgh potty”) may seem strange, but it had a definitive purpose.
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