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Top-Rated Water treatment pros in East Northport - Updated Nov 2026

Avatar for Simply PUR Water Filtration
Simply PUR Water Filtration
5.0(
39
)
Water Treatment & Purification System - Install or ReplaceWater Treatment & Purification System - Repair or Service

Serving East Northport, NY and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"Claudia and Vincent were very helpful in explaining how the system works. We decided to do the whole house filtration system. Vincent and his workers arrived on time and were very neat and considerate. It might be a little costly, but you cannot put a price on clean water and your health."
Pentair Fresh Point 575M
Pentair Fresh Point 575M
Farmingville Home
East Williston Home
East Chester Home

+94

Response time1 day
Response rate89%
29 neighbors recently requested a quote
Avatar for Purified Solutions, LLC
Purified Solutions, LLC
5.0(
14
)
Water Treatment & Purification System - Repair or Service

Serving East Northport, NY and surrounding areas

Approved

In business since 2012

Free estimates

Credit card accepted

"Jose and his team were super professional and very knowledgeable. Not to mention honest. Needed my whole house filter changed and ended up adding on a purified water system for drinking. The whole process was seamless. I would definitely recommend them to anyone looking for an honest and reliable company."
Response time9 hrs
Response rate86%
Recommended by92%of homeowners
Avatar for Long lsland Clean Water Service, Inc.
Long lsland Clean Water Service, Inc.
4.6(
67
)
Water Treatment & Purification System - Install or ReplaceWater Treatment & Purification System - Repair or Service

Serving East Northport, NY and surrounding areas

Approved

In business since 1985

Free estimates

Emergency services offered

"From the sales representative, Anthony, to the owners Mark and Madelyn, our family's experience with this company was impeccable. They showed such care and compassion once they found out that the Long Island's hard water in our home caused our 5 month old skin to breakout so badly. She was in such distress and they went above and beyond the call of duty to ensure that the water system was installed ASAP. The installers were so considerate that they even removed their shoes while working in our kitchen, without us asking them to do so. They worked efficiently and were very thorough. Jennifer who handles the office matters, was a pleasure to work with. As she rightfully texted me, It takes a village to raise a child and we truly are blessed to be a part of this water family. We rewashed the baby's clothes and you can immediately feel the difference and the natural products that can only be ordered through the company will save us tons of money from household cleaning supplies to bodywash everything is all natural. I have already convinced my pastors to have the system installed in their new long island home and will continue to recommend this company to everyone I can. Worth every single penny!"
Bypass
Whole House Water Filtration System with UV Filter
Reverse Osmosis
Reionator Pro Ultra
Reionator Pro Ultra

+6

Response time2 days
8 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Patience HVAC, LLC
Patience HVAC, LLC
4.9(
30
)
Water Treatment & Purification System - Install or ReplaceWater Treatment & Purification System - Repair or Service

Serving East Northport, NY and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

"I am very happy that I hired Patience HVAC to replace my hot water heater. I have an oil burner and oil hot water heater. The 18 year old heater was making crackling noises and I was advised by the oil company to replace it. I wanted to convert to a gas hot water heater and tried going through Lowes. However, they only do swap outs if the existing heater is already set up for gas. So I contacted several companies for a quote. Out of all of them, Anthony was the most professional, down to earth and reasonably priced. First, he suggested to explore correcting the issue on the old heater and save me money which was impressive. I decided to proceed with a new gas heater. The quote he gave me was $800 less than the next lowest quote. Anthony sent his workers Caesar and Matt the next day which I greatly appreciated. They were both very polite and wore covers on their shoes so to avoid dirtying my house more than necessary. Anthony came later in the day to ensure everything was done correctly. He then offered to call him with any questions even if they were not pertinent to the work they performed. I am extremely impressed with patience HVAC honesty, professionalism and reasonable prices. I will be sure to recommend them to friends and family. When I am ready to install a ductless air conditioner, I will definitely contact Patience HVAC."
Peerless
Peerless Boiler with Hot Water
Annual Service
Response time4 hrs
Recommended by100%of homeowners
Avatar for Excellent Plumbing & Heating
Excellent Plumbing & Heating
4.9(
28
)
Water Treatment & Purification System - Install or Replace

Serving East Northport, NY and surrounding areas

Approved

In business since 2021

Free estimates

Emergency services offered

"The team did an excellent job. I converted my heating system from oil to gas. They finished everything quickly and efficiently. Joe and his crew were very easy to communicate with. I highly recommend them for any future plumbing jobs."
Oil to Gas Conversion
Response time3 hrs
Response rate99%
Recommended by42%of homeowners
Avatar for All Weather Heating & Cooling
All Weather Heating & Cooling
4.5(
70
)
Water Treatment & Purification System - Install or ReplaceWater Treatment & Purification System - Repair or Service

Serving East Northport, NY and surrounding areas

Approved

In business since 1969

Free estimates

Emergency services offered

"I was very happy with my service call today! The repairman, Scott, was knowledgeable and pleasant and wore a mask and gloves throughout., so I felt safe, despite the pandemic. He serviced both of my central air systems and diagnosed the problem with the malfunctioning one and fixed it. By the time he left my house was already a much more pleasant place to be!"
Additional Photos
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+13

Response time3 days
7 neighbors recently requested a quote
Recommended by94%of homeowners
1-800-Plumber +Air of Central Long Island
New to Angi
Water Treatment & Purification System - Install or ReplaceWater Treatment & Purification System - Repair or Service

Serving East Northport, NY and surrounding areas

Approved

In business since 2025

Free estimates

Credit card accepted

1800-Plumber +Air is located in Central Long Island, NY and is focused on being the BEST! It’s not about being better than everyone else, instead our focus is on providing you with the fast, dependable plumbing and emergency services when you need it most. Our goal is to give you the BEST experience you have ever received from a service based business.

2 neighbors recently requested a quote
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