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Water treatment & purification system installers and replacers in Keene

W.W. Water Systems, LLC
25 Lee Street
5.00(
2
)
Approved Pro
W.W. Water Systems, LLC
25 Lee Street
5.00(
2
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
15 years of experience

W.W. Water Systems, LLC was started in 2010 by John Wentzel. John has 10 years experience in the well water industry and holds a Bachelors Degree in Environmental Geology. John is certified through the Water Quality Association as a water specialist. John is a licensed pump installer in the state of NH and is fully insured. Call today!

"Prompt response and quick to complete"

Michael Z on August 2018

W.W. Water Systems, LLC was started in 2010 by John Wentzel. John has 10 years experience in the well water industry and holds a Bachelors Degree in Environmental Geology. John is certified through the Water Quality Association as a water specialist. John is a licensed pump installer in the state of NH and is fully insured. Call today!

"Prompt response and quick to complete"

Michael Z on August 2018


Avatar for Maine's Best Water Treatment
Maine's Best Water Treatment
674 Richmond Road
4.94(
221
)
Approved Pro
Maine's Best Water Treatment
674 Richmond Road
4.94(
221
)
Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
84 local quotes requested

Do you have Iron, manganese, sulfur, arsenic, uranium or just hard water give us a call. Our customer service is our main priority, we are here to help you. We have many years of experience to give you confidence that we are your number one choice for your next water treatment purification system. Call us today and we look forward to your future business! We keep our prices low so everyone can afford healthy clean water. We are all about community and family. It will not cost you a fortune for healthy water if you give us a call. We also do no interest short term payment plans! There is no reason not to drink clean healthy water.

"I was looking to have a new water filter system installed for my well at my lake house and found Maines Best Water Treatment on Google. Brad quickly responded, then I emailed him my most recent water test results. He recommended the UV system, gave me a price and scheduled me right in. Brad and his helper showed up as scheduled, ontime and clean appearance. They quickly installed my new water filter system, cleaned up after themselves and I was conveniently able to pay the invoice on the spot with Brads ipad tablet payment system. The invoice was exactly as quoted. I will also take advantage of his annual maintenance plan. Professional and affordable. Highly recommended. Also rapid follow up with new clean water test and answered my winterization questions. Knowledgeable."

Chris D on June 2025

Do you have Iron, manganese, sulfur, arsenic, uranium or just hard water give us a call. Our customer service is our main priority, we are here to help you. We have many years of experience to give you confidence that we are your number one choice for your next water treatment purification system. Call us today and we look forward to your future business! We keep our prices low so everyone can afford healthy clean water. We are all about community and family. It will not cost you a fortune for healthy water if you give us a call. We also do no interest short term payment plans! There is no reason not to drink clean healthy water.

"I was looking to have a new water filter system installed for my well at my lake house and found Maines Best Water Treatment on Google. Brad quickly responded, then I emailed him my most recent water test results. He recommended the UV system, gave me a price and scheduled me right in. Brad and his helper showed up as scheduled, ontime and clean appearance. They quickly installed my new water filter system, cleaned up after themselves and I was conveniently able to pay the invoice on the spot with Brads ipad tablet payment system. The invoice was exactly as quoted. I will also take advantage of his annual maintenance plan. Professional and affordable. Highly recommended. Also rapid follow up with new clean water test and answered my winterization questions. Knowledgeable."

Chris D on June 2025


Avatar for Ardito & Sons, LLC
Ardito & Sons, LLC
P.O. Box 17
5.00(
5
)
Approved Pro
Ardito & Sons, LLC
P.O. Box 17
5.00(
5
)
Approved Pro
1 years of experience
Free onsite estimate

Ardito & Sons is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business. We also do not work on Town Water Systems. Only Well Systems We offer a Veteran Discount.

"Richard's response time was immediate. He was highly professional and friendly while exhibiting extensive knowledge for the job. We are very happy and would hire him again."

Katharine S on July 2025

Ardito & Sons is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business. We also do not work on Town Water Systems. Only Well Systems We offer a Veteran Discount.

"Richard's response time was immediate. He was highly professional and friendly while exhibiting extensive knowledge for the job. We are very happy and would hire him again."

Katharine S on July 2025


Avatar for SECONDWIND WATER SYSTEMS, INC
SECONDWIND WATER SYSTEMS, INC
735 E Industrial Park Dr
4.81(
37
)
Approved Pro
SECONDWIND WATER SYSTEMS, INC
735 E Industrial Park Dr
4.81(
37
)
Approved Pro
Customers say: Quality work
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
78 local quotes requested

At Secondwind Water Systems, we specialize in customized water treatment solutions for homes and businesses across New Hampshire. Whether you're dealing with Hard Water, PFAS, Arsenic, Odors, or other water quality issues, we provide testing, diagnosis, and system installation tailored to your unique water chemistry. What sets us apart? We have more certified water professionals than any other company in New Hampshire—ensuring every recommendation we make is backed by deep technical expertise. Our team is dedicated to delivering dependable, high-quality service with solutions that truly work. We stand behind our work with exceptional warranties, ongoing support, and a commitment to doing what’s right for our customers. From softeners and filtration systems to drinking water solutions and advanced contaminant removal, you can trust Secondwind to improve your water—and your peace of mind.

"Exceptional work and quality. The installer truly knew what he was doing. He was quick, thorough and very efficient."

Bruce S on November 2019

At Secondwind Water Systems, we specialize in customized water treatment solutions for homes and businesses across New Hampshire. Whether you're dealing with Hard Water, PFAS, Arsenic, Odors, or other water quality issues, we provide testing, diagnosis, and system installation tailored to your unique water chemistry. What sets us apart? We have more certified water professionals than any other company in New Hampshire—ensuring every recommendation we make is backed by deep technical expertise. Our team is dedicated to delivering dependable, high-quality service with solutions that truly work. We stand behind our work with exceptional warranties, ongoing support, and a commitment to doing what’s right for our customers. From softeners and filtration systems to drinking water solutions and advanced contaminant removal, you can trust Secondwind to improve your water—and your peace of mind.

"Exceptional work and quality. The installer truly knew what he was doing. He was quick, thorough and very efficient."

Bruce S on November 2019


H2O in the 603 Water Treatment
1 Hardy Road
5.00(
1
)
H2O in the 603 Water Treatment
1 Hardy Road
5.00(
1
)
Free onsite estimate

WILDER PLUMBING & HEATING
425 JAFFREY RD
4.27(
11
)
WILDER PLUMBING & HEATING
425 JAFFREY RD
4.27(
11
)
Customers say: Super punctual
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers

At Wilder Plumbing & Heating we take great pride in the quality of our workmanship. We demand the highest standards in our installations and in the products we use. We can manage all aspects of your project, from designing the best system for your needs to installing and maintaining it. Wilder Plumbing & Heating can do anything from the simplest of repairs to the most advanced mechanical system design. We install and repair residential and light commercial plumbing, heating and cooling systems. We keep up to date on the most recent advances in technology and specialize in high-efficiency hydronic heating systems. Our knowledgeable staff is fully licensed. For your next plumbing or heating project call the professionals at Wilder Plumbing & Heating.

At Wilder Plumbing & Heating we take great pride in the quality of our workmanship. We demand the highest standards in our installations and in the products we use. We can manage all aspects of your project, from designing the best system for your needs to installing and maintaining it. Wilder Plumbing & Heating can do anything from the simplest of repairs to the most advanced mechanical system design. We install and repair residential and light commercial plumbing, heating and cooling systems. We keep up to date on the most recent advances in technology and specialize in high-efficiency hydronic heating systems. Our knowledgeable staff is fully licensed. For your next plumbing or heating project call the professionals at Wilder Plumbing & Heating.


Northeast Water Wells Inc
50 River St
2.33(
3
)
Northeast Water Wells Inc
50 River St
2.33(
3
)
Customers say: Quick response
59 years of experience

Northeast Water Wells has been providing quality water systems throughout Massachusetts and New Hampshire since 1966. We are fully licensed and insured in both states. Being a third generation company Northeast Water Wells focus has always been on the complete system beginning with the well and continuing with our ongoing customer support. At Northeast Water Wells Inc not only do we specialize in Water Well real estate testing but also install and service complete water well pumping systems, install artesian water wells, Geothermal well installation, emergency service and so much more. Northeast Water Wells not only specializes in residential applications but we also cover the following applications as well; Commercial systems, Industrial systems, Municipal systems, Community Wells Systems, Geothermal Wells, Agricultural Water systems and Irrigation Wells. At Northeast Water Wells are services are not limited to well and pump installation we also have a plethora of other services available. Northeast water wells experienced technicians also specialize in Artesian Water Well Abandonment, Well Rehabilitation, Water Well Chlorination, Submersible water pumps, Jet pumps, Constant Pressure Pumps, Pressure Boosting Pumps, Solar/ wind powered pumping systems. Water Pressure holding tanks, Atmospheric Water Holding tanks, Water Quality/ Quantity testing, water conditioning and treatment, filtration, sanitizers, water softeners, hydrofracture, zone fracture, Water Well Maintenance and Well Efficiency Audits. Northeast Water Wells Inc has very strict employee policies including but not limited to the following; Detailed saftey policy, Osha 10, A No tolerance Drug and Alcohol Policy managed by a third party compliance company, routine background and driving record checks. The saftey of not only our employees but also our clients is our top priority.

Northeast Water Wells has been providing quality water systems throughout Massachusetts and New Hampshire since 1966. We are fully licensed and insured in both states. Being a third generation company Northeast Water Wells focus has always been on the complete system beginning with the well and continuing with our ongoing customer support. At Northeast Water Wells Inc not only do we specialize in Water Well real estate testing but also install and service complete water well pumping systems, install artesian water wells, Geothermal well installation, emergency service and so much more. Northeast Water Wells not only specializes in residential applications but we also cover the following applications as well; Commercial systems, Industrial systems, Municipal systems, Community Wells Systems, Geothermal Wells, Agricultural Water systems and Irrigation Wells. At Northeast Water Wells are services are not limited to well and pump installation we also have a plethora of other services available. Northeast water wells experienced technicians also specialize in Artesian Water Well Abandonment, Well Rehabilitation, Water Well Chlorination, Submersible water pumps, Jet pumps, Constant Pressure Pumps, Pressure Boosting Pumps, Solar/ wind powered pumping systems. Water Pressure holding tanks, Atmospheric Water Holding tanks, Water Quality/ Quantity testing, water conditioning and treatment, filtration, sanitizers, water softeners, hydrofracture, zone fracture, Water Well Maintenance and Well Efficiency Audits. Northeast Water Wells Inc has very strict employee policies including but not limited to the following; Detailed saftey policy, Osha 10, A No tolerance Drug and Alcohol Policy managed by a third party compliance company, routine background and driving record checks. The saftey of not only our employees but also our clients is our top priority.


IEC Plumbing & Heating LLC
23 Gilbert Rd
4.33(
3
)
IEC Plumbing & Heating LLC
23 Gilbert Rd
4.33(
3
)
Customers say: Quick response
18 years of experience

Local plumbing company with over 20 years experience in the plumbing and heating field. Gas licensed professional work completed

Local plumbing company with over 20 years experience in the plumbing and heating field. Gas licensed professional work completed


Environmental Testing & Research Laboratories, Inc
60 Elm Hill Ave.
4.85(
337
)
Environmental Testing & Research Laboratories, Inc
60 Elm Hill Ave.
4.85(
337
)
Customers say: True professional
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers

ETR Laboratories in an analytic laboratory with a broad range of commercial, industrial and individual clients. We provide analytic services using a wide variety of scientific methods including GC/MS, IC/MS, GIR, NMR and SEM equipment. We can do particle analysis, organic and inorganic chemical analysis and micro analysis on biological and other materials. Private water analysis is our specialty. Award winning. Additional DBA - Environmental Testing & Research Laboratories Inc, ETR Labs, ETR Laboratories.

"as advertised"

Nancy C on July 2018

ETR Laboratories in an analytic laboratory with a broad range of commercial, industrial and individual clients. We provide analytic services using a wide variety of scientific methods including GC/MS, IC/MS, GIR, NMR and SEM equipment. We can do particle analysis, organic and inorganic chemical analysis and micro analysis on biological and other materials. Private water analysis is our specialty. Award winning. Additional DBA - Environmental Testing & Research Laboratories Inc, ETR Labs, ETR Laboratories.

"as advertised"

Nancy C on July 2018


Coletta Radon Systems
430 Tirrell Hill Rd
5.00(
13
)
Coletta Radon Systems
430 Tirrell Hill Rd
5.00(
13
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Coletta Radon Systems was founded by Robert Coletta in March of 2007. Our main goal is to protect you and your family from the harmful effects that radon exposure can have on the respiratory system. Coletta Radon Systems can improve your indoor air quality and guarantee to reduce the radon levels in your home. Coletta Radon Systems installs energy star radon fans, water treatment systems and high efficiency heating and cooling systems. Coletta Radon Systems uses the most current products to say up-to-date and maximize your energy savings. We offer AARST/NRPP certified technicians, guaranteed results, quality workmanship and reasonable rates. Coletta Radon Systems is fully licensed and insured. Coletta Radon Systems strives to ensure that radon levels are low and customers are happy. Call us today to schedule your appointment - (603) 401-3563 or visit us at www.colettaradonsystems.com

"Rob was easy to communicate with and we were satisfied with their work. Our radon levels plummeted as a result of the system installed."

Bonnie S on March 2019

Coletta Radon Systems was founded by Robert Coletta in March of 2007. Our main goal is to protect you and your family from the harmful effects that radon exposure can have on the respiratory system. Coletta Radon Systems can improve your indoor air quality and guarantee to reduce the radon levels in your home. Coletta Radon Systems installs energy star radon fans, water treatment systems and high efficiency heating and cooling systems. Coletta Radon Systems uses the most current products to say up-to-date and maximize your energy savings. We offer AARST/NRPP certified technicians, guaranteed results, quality workmanship and reasonable rates. Coletta Radon Systems is fully licensed and insured. Coletta Radon Systems strives to ensure that radon levels are low and customers are happy. Call us today to schedule your appointment - (603) 401-3563 or visit us at www.colettaradonsystems.com

"Rob was easy to communicate with and we were satisfied with their work. Our radon levels plummeted as a result of the system installed."

Bonnie S on March 2019

Showing 1-10 of 23
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