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TRUSTED BY THORNWOOD, NY HOMEOWNERS

  • Average homeowner rating star icon4.8
    Average homeowner rating
  • Verified reviews icon155
    Verified septic tank services reviews

Find Septic tank pros in Thornwood

Avatar for Great Bear Septic Service

Great Bear Septic Service

4.94(
32
)
Approved Pro

Great Bear Septic Service

4.94(
32
)
Approved Pro
Customers say: Quick response
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
27 local quotes requested

Great Bear Septic Services offers the best quality 24 hour emergency septic service. Call us today for a free estimate and same day service. Senior Discounts! From our initial consultation to the cleaning, repair and ongoing maintenance of your home's septic system, you won't find a company more committed to the safety of you, your family and your home. We guarantee your satisfaction every step of the way. When you have questions, our trained, professional, and well-groomed staff is always ready to help. Don't trust your loved ones' safety to anyone else. Additional email - [email protected].

"Couldn't be happier with the service we've been receiving from Great Bear Septic over the years. They are professional, take the time to answer our questions, and are unfailingly cheerful. They are a pleasure to work with. When we first purchased our home ten years ago, we had Earthcare take a look at our system. They tried to talk us into a $20,000+ replacement of our system. Something didn't seem quite right, so on the recommendation of friends, we reached out to Great Bear. Ten years later, with regular pumping from Great Bear, system still works great. In addition to all their other fine qualities, the team at Great Bear is trustworthy! Could not ask for more."

Peter M on November 2022

Great Bear Septic Services offers the best quality 24 hour emergency septic service. Call us today for a free estimate and same day service. Senior Discounts! From our initial consultation to the cleaning, repair and ongoing maintenance of your home's septic system, you won't find a company more committed to the safety of you, your family and your home. We guarantee your satisfaction every step of the way. When you have questions, our trained, professional, and well-groomed staff is always ready to help. Don't trust your loved ones' safety to anyone else. Additional email - [email protected].

"Couldn't be happier with the service we've been receiving from Great Bear Septic over the years. They are professional, take the time to answer our questions, and are unfailingly cheerful. They are a pleasure to work with. When we first purchased our home ten years ago, we had Earthcare take a look at our system. They tried to talk us into a $20,000+ replacement of our system. Something didn't seem quite right, so on the recommendation of friends, we reached out to Great Bear. Ten years later, with regular pumping from Great Bear, system still works great. In addition to all their other fine qualities, the team at Great Bear is trustworthy! Could not ask for more."

Peter M on November 2022


Avatar for Aqua Tech Plumbing

Aqua Tech Plumbing

4.67(
3
)
Approved Pro

Aqua Tech Plumbing

4.67(
3
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
48 local quotes requested

We specialize in plumbing services, repairs, inspections, installations, and more! We guarantee your satisfaction, and we won’t leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Check out all the services we offer below and call -or- click to schedule a free estimate today!

"Very good service. Explained everything. Removed and/or replace with explanations."

Charles M on March 2025

We specialize in plumbing services, repairs, inspections, installations, and more! We guarantee your satisfaction, and we won’t leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Check out all the services we offer below and call -or- click to schedule a free estimate today!

"Very good service. Explained everything. Removed and/or replace with explanations."

Charles M on March 2025


Avatar for County Septic Tank Co., Inc.

County Septic Tank Co., Inc.

New on AngiNew on Angi
Approved Pro

County Septic Tank Co., Inc.

New on AngiNew on Angi
Approved Pro
69 years of experience

County Septic Tank Co., Inc., proudly serves its customers with pride, integrity, and attention to the details that matter most to you. This is one of the many things that sets us apart from the rest. We are locally owned and operated. Give us a call today! We have the knowledge and experience to help asertain any speitc system problem or installation. Through our many years of experience and being the family owned business that we are, we take the mystery and problems out of installing new systems, repairing old ones, or just finding out what is going on and we can figure out a course of action.

County Septic Tank Co., Inc., proudly serves its customers with pride, integrity, and attention to the details that matter most to you. This is one of the many things that sets us apart from the rest. We are locally owned and operated. Give us a call today! We have the knowledge and experience to help asertain any speitc system problem or installation. Through our many years of experience and being the family owned business that we are, we take the mystery and problems out of installing new systems, repairing old ones, or just finding out what is going on and we can figure out a course of action.


Avatar for DeClogg Drain Services, Inc.

DeClogg Drain Services, Inc.

4.92(
73
)
Approved Pro

DeClogg Drain Services, Inc.

4.92(
73
)
Approved Pro
Customers say: Quick response
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers
24 years of experience

DeClogg Drain Services, Inc., is a full service septic and drainage company. We install, repair, and diagnose any septic and drainage issues you may have. DeClogg Drain Services, Inc., is committed to customer service. With over 20 years of combined experience, we are always ready to share our knowledge by answering all of our customers' questions. We take pride in our personalized service and quick professional response. DeClogg provides a wide range of services to get the job done right. If we can't personally solve your problem, we can refer you to another professional who may.

"Vic is responsive, professional and reliable"

Paul N on October 2023

DeClogg Drain Services, Inc., is a full service septic and drainage company. We install, repair, and diagnose any septic and drainage issues you may have. DeClogg Drain Services, Inc., is committed to customer service. With over 20 years of combined experience, we are always ready to share our knowledge by answering all of our customers' questions. We take pride in our personalized service and quick professional response. DeClogg provides a wide range of services to get the job done right. If we can't personally solve your problem, we can refer you to another professional who may.

"Vic is responsive, professional and reliable"

Paul N on October 2023


Avatar for ProSeptic

ProSeptic

4.57(
338
)
Approved Pro

ProSeptic

4.57(
338
)
Approved Pro
Customers say: True professional
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
154 local quotes requested

Welcome to ProSeptic. We are the Hudson Valley's only full service septic, drain and plumbing company located in Poughkeepsie, NY. We handle anything that has to do with water and waste-water in your home. Our prompt, courteous, and professional staff tackles every job with a commitment to customer satisfaction. Your satisfaction is our number one priority. Our goal, at ProSeptic, is to serve our customers. You will never hear us "run down" our competition, but instead we strive to set an example - setting the standard to which other companies in our industry are measured. Give us a call today.

"Went well and efficient"

Dianne C on November 2025

Welcome to ProSeptic. We are the Hudson Valley's only full service septic, drain and plumbing company located in Poughkeepsie, NY. We handle anything that has to do with water and waste-water in your home. Our prompt, courteous, and professional staff tackles every job with a commitment to customer satisfaction. Your satisfaction is our number one priority. Our goal, at ProSeptic, is to serve our customers. You will never hear us "run down" our competition, but instead we strive to set an example - setting the standard to which other companies in our industry are measured. Give us a call today.

"Went well and efficient"

Dianne C on November 2025


Avatar for Fred A. Cook Jr. Inc.

Fred A. Cook Jr. Inc.

4.77(
50
)
Approved Pro

Fred A. Cook Jr. Inc.

4.77(
50
)
Approved Pro
Customers say: Quality work
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
57 local quotes requested

With over 40 years of experience, Fred A. Cook Jr. is your solution for all you septic cleaning and pump out needs. We take great pride in our extreme professionalism, timeliness and superior customer service on every job. Satisfaction guaranteed!

"Reasonable price "

Liang Z on August 2025

With over 40 years of experience, Fred A. Cook Jr. is your solution for all you septic cleaning and pump out needs. We take great pride in our extreme professionalism, timeliness and superior customer service on every job. Satisfaction guaranteed!

"Reasonable price "

Liang Z on August 2025


Avatar for S&G Septic Inspections LLC

S&G Septic Inspections LLC

4.74(
17
)
Approved Pro

S&G Septic Inspections LLC

4.74(
17
)
Approved Pro
Customers say: True professional
24 local quotes requested
4 years of experience

I pride myself on my professionalism, as well as my ability to complete every job to the homeowner's total satisfaction. I never leave a job unfinished, or a homeowner not 100% satisfied with my level of service - Call today!

"Santiago and his team did an amazing job replacing my entire septic system in a timely manner considering the enormity of the project and the rainy weather conditions. Santiago was in constant communication with me and explained every step of the project, and coordinated everything with the town for all the required inspections. S&G Septic is a professional crew that I highly recommend."

Oliver C on April 2024

I pride myself on my professionalism, as well as my ability to complete every job to the homeowner's total satisfaction. I never leave a job unfinished, or a homeowner not 100% satisfied with my level of service - Call today!

"Santiago and his team did an amazing job replacing my entire septic system in a timely manner considering the enormity of the project and the rainy weather conditions. Santiago was in constant communication with me and explained every step of the project, and coordinated everything with the town for all the required inspections. S&G Septic is a professional crew that I highly recommend."

Oliver C on April 2024


Avatar for E. Garrity Water Solutions, LLC

E. Garrity Water Solutions, LLC

4.88(
42
)
Approved Pro

E. Garrity Water Solutions, LLC

4.88(
42
)
Approved Pro
Customers say: Quick response
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
30 local quotes requested

At E. Garrity Water Solutions we focus on quality water improvements over quantity. We use our years of experience and expertise to complete your project with perfection. Customer service and honesty are the most important aspects of our business, and your satisfaction is guaranteed. Please call us today for an estimate. We look forward to working with you.

"For weeks, we were getting less and less water from our faucets. Finally, we were down to a dispiriting trickle. A first visit from Garrity did not resolve the issue. When, concerned, I called back several days later, they immediately dispatched Joe and Cody, who arrived w/n 15 min. They probed deeply to find out the cause, discovering a cracked pipe and failing well pump, dating from about 30 years ago. They installed a new pump and new well cap up to current code and ensured that the water coming from the well was bacteria-free. This am, Joe was back by 8 am to show us how to flush all chlorine residues from our system and explain what he had done. Joe was determined, undaunted and kept at it until he found the cause of the inadequate water pressure--despite the late evening hour yesterday. His explanations were informative, clear every step of the way and helped us understand what was going on. He was patient, amiable and very good at what he does. Thank you Joe, Cody and Garrity!"

Juliane B on June 2024

At E. Garrity Water Solutions we focus on quality water improvements over quantity. We use our years of experience and expertise to complete your project with perfection. Customer service and honesty are the most important aspects of our business, and your satisfaction is guaranteed. Please call us today for an estimate. We look forward to working with you.

"For weeks, we were getting less and less water from our faucets. Finally, we were down to a dispiriting trickle. A first visit from Garrity did not resolve the issue. When, concerned, I called back several days later, they immediately dispatched Joe and Cody, who arrived w/n 15 min. They probed deeply to find out the cause, discovering a cracked pipe and failing well pump, dating from about 30 years ago. They installed a new pump and new well cap up to current code and ensured that the water coming from the well was bacteria-free. This am, Joe was back by 8 am to show us how to flush all chlorine residues from our system and explain what he had done. Joe was determined, undaunted and kept at it until he found the cause of the inadequate water pressure--despite the late evening hour yesterday. His explanations were informative, clear every step of the way and helped us understand what was going on. He was patient, amiable and very good at what he does. Thank you Joe, Cody and Garrity!"

Juliane B on June 2024


Avatar for J. Meister Pumps & Plumbing, LLC

J. Meister Pumps & Plumbing, LLC

4.75(
4
)
Approved Pro

J. Meister Pumps & Plumbing, LLC

4.75(
4
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
18 local quotes requested

We're dedicated to providing our clients with the very best in service, installation, and repair for all phases of your plumbing needs. We specialize in a variety of residential and commercial services and take pride in the attention to detail put into each of the projects we're involved with. We're known for our quality work and the integrity of our business. We look forward to building long-term relationships with our clients, and guarantee your satisfaction.

"I was given advice over the phone and I fixed issue by changing a foam filter to a string filter"

Brian B on February 2025

We're dedicated to providing our clients with the very best in service, installation, and repair for all phases of your plumbing needs. We specialize in a variety of residential and commercial services and take pride in the attention to detail put into each of the projects we're involved with. We're known for our quality work and the integrity of our business. We look forward to building long-term relationships with our clients, and guarantee your satisfaction.

"I was given advice over the phone and I fixed issue by changing a foam filter to a string filter"

Brian B on February 2025


Avatar for Cassidy Plumbing and Heating, Inc

Cassidy Plumbing and Heating, Inc

4.70(
23
)
Approved Pro

Cassidy Plumbing and Heating, Inc

4.70(
23
)
Approved Pro
Super Service Award
Customers say: True professional
Recommended by 91% of Angi customers
Recommended by 91% of HomeAdvisor customers
294 local quotes requested

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.

"Oct. 6 2025 it went quick. I received an estimate of The job first. The work was done correctly. It didn't take long. If I need plumbing service again. I would contact Cassidy plumbing & Heating."

Ann S on October 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.

"Oct. 6 2025 it went quick. I received an estimate of The job first. The work was done correctly. It didn't take long. If I need plumbing service again. I would contact Cassidy plumbing & Heating."

Ann S on October 2025

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Septic Tanks questions, answered by experts

For the most part, choosing between 30/50 psi and 40/60 psi is based on your water-pressure preference. However, it can also depend a little bit on your house—if you have older plumbing, a lower water pressure can be easier on the pipes (and a bit more gentle on your well pump). 

The lower 30/50 pressure is usually enough for a single-story home, but you may want 40/60 if you have multiple stories, as the extra pressure helps water flow smoothly up to the second floor.

Ensuring you have adequate space for your engineered septic system is crucial. You’ll need to reserve approximately 900 square feet for a three-bedroom home’s system. However, the type of soil you have, soil absorption rate, the size of your home, climate, and local zoning code will impact the actual amount of space you need.

Options include submersible, jet, and centrifugal pumps. Choose based on water needs and well depth.

There are a few things that can make your drain field fail. These include driving or parking vehicles or heavy machinery on the field, excess sodium in the soil, or having a high water table. You can prevent failure by ensuring your installer checks that your chosen location is suitable for a drain field and properly maintaining your system with the help of a professional.

Your toilet will still flush if the septic tank is full, but it might flush more slowly. It may make gurgling sounds as the wastewater slowly drains through the pipes. You may also notice the toilet clogs up more frequently when the septic tank is full, although this can also be a sign of other plumbing issues, like a clog in the pipes.

The Thornwood, NY homeowners’ guide to septic tank services

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