Whole-Home Water Filtration for Long Island Homes

Cleaner, better tasting water from every tap! Get your filtration system professionally installed and backed by a 10-year guarantee.

pHountain Water Filtration helps Nassau and Suffolk County homeowners reduce chlorine, sediment, and common contaminants right at the source. Start with a free in-home water test or check out our online store.

Book a Free Water Test View Online Store

Book Your Free In-Home Water Test

A local pHountain Water Filtration specialist tests your water, explains the results, and recommends the right system — free, with no pressure.

Why Whole-Home Filtration

The Benefits of Whole-Home Water Filtration

Superior Taste

Reducing chlorine taste and odor leaves every glass crisp, clean, and easy to drink.

Advanced Filtration

Multi-stage whole-home systems reduce chlorine, sediment, and other common contaminants at the source.

Essential Minerals

Balanced filtration reduces what you don't want while keeping the healthy minerals you do.

Softer Skin & Hair

Filtered water is gentler on skin and hair, so every shower feels cleaner and less drying.

Explore Our Water Systems

From whole-home filtration to reverse osmosis, alkaline, and mineralizers — find the right system for your water.

Alkaline System

Raises pH for smoother, less acidic water
Adds beneficial minerals for better taste
Ideal for everyday drinking and hydration

Alkaline Systems

Reverse Osmosis

Multi-stage purification for pure drinking water
Reduces dissolved solids, sediment, and odor
Crisp, clean water right at your kitchen tap

Reverse Osmosis Systems

Water Filtration

Reduces chlorine, sediment, and common contaminants
Whole-home and under-counter options available
Cleaner water for drinking, showers, and appliances

Water Filtration Systems

Mineralizers

Restores healthy minerals to purified water
Supports a naturally alkaline, balanced pH
A perfect finishing stage for reverse osmosis

Mineralizer Systems

Dr. Robert Caiati in a white coat holding a glass of water beside a pHountain pHresh whole-home water filtration system, under the heading Doctors Know Best

Doctor Recommended

Recommended by a Long Island Physician

Dr. Robert Caiati stands by the pHountain pHresh whole-home water filtration system. He is a board-certified physician and the founder and medical director of Shore Medical Aesthetics & Anti-Aging in Babylon and Bellmore, NY.

Robert Caiati, M.D., M.Sc. — board-certified physician
Medical Director and Founder, Shore Medical Aesthetics & Anti-Aging
Residency at Stony Brook University

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What Long Island homeowners are saying

Real, verified Google reviews from families across Nassau and Suffolk County.

Fernando P.

3 months ago

Jay came to the house to follow up on the initial water test. Jay is very professional and helped us assess the best system for our Suffolk Co. municipal water. We have scheduled installation (very quick in a couple days) and look forward to having clean, soft water throughout the house.

andrew G.

4 months ago

I was quite pleased with the level of service I received. The serviceman was very friendly and professional. The quality of my tap water has improved significantly. Would definitely recommend.

Jorge L. C.

4 months ago

One of the best choices ive ever made, please get a filtration system from them, you wont regret it trust me

Sum1LighTuP

4 months ago

Jay is the man, system added to my house, water has been great and service is up to par..consider this system, drinkable water coming through all faucets in the house.. no brainer!! Greatest investment I ever made.

Tony O.

5 months ago

We absolutely loved the process of getting a whole house water filter system. From the first text, Mason, the salesman was great, informative and super helpful. Also seems like a great guy. Installation day was quick and smooth - only took a couple of hours and Thomas the plumber explained everything in detail.

Lautaro E.

5 months ago

I am so happy with this whole system. From our super friendly and supportive Sales Rep, Greg, to the professional and excellent work of plumbers Billy and Joe, Phountain makes the whole experience seamless and ensures all worries are addressed. We got the Jumbo system rated for 2,000,000 gallons which should last us about 25-30 years!! We also got the mineralizer under the sink to bring our drinking water to a pH over 9.4! Billy and Joe were amazing, super friendly, and explained everything they did at every step. The quality of the work is really nice and looks built to last! The pictures speak for themselves! We can’t wait to see the results of our clean and high alkalinity water over time! We will be recommending Phountain to all our family and friends!

mary W.

5 months ago

Excellent knowledge, informative, highly recommend Michael and Mason, choose Phountain and know that your water is safe

Frank G.

6 months ago

The Whole House system is great! It works perfect. Thank you to the water specialist who helped me out! 10/10 system

Kenny C.

6 months ago

We recently had a whole home water filtration system installed, and the entire experience was outstanding from start to finish. Mason was incredibly professional, knowledgeable, and easy to work with. He took the time to clearly explain how the system works, the benefits for our home, and answered every question we had without any pressure. You can tell he truly knows his stuff and cares about making sure you’re comfortable with your decision. Installation day went just as smoothly thanks to Tom. He was punctual, respectful, and did a very clean, neat job. The setup looks great, and you can see the pride he takes in his work. Everything was installed efficiently and left spotless. We were previously clients at the Phountain Port Jefferson location and would regularly pick up our filtered water there. Now, having the convenience of clean, filtered water right at home has been a complete game changer. Overall, we couldn’t be happier with the service and quality. Highly recommend this company to anyone considering a whole home water filtration system, you’ll be in great hands from consultation to installation. Thanks Phountain!

Madeline R.

6 months ago

We got a water kit in the mail to test our water. After a week of waiting I received a call from a wonderful man who told me everything I needed to know about how to get great clean water. I then made an appointment with a water technician to come out. Jay was wonderful and educated me a lot on how bad our water is on Long Island. The plumbers did an excellent job as well! I am so happy I went with Phoutain and I will be recommending them to all my family and friends! :)

Darwin J.

6 months ago

Let me just say wow wish I could put more stars it started with sending my water out after I got a notice in the mail the gentleman over the phone said they were a private company and you know what I was all for it because they do what the town wish they can do Fix the Problem. It was something I was going to get around to do is put a water system in because you hear about is the micro plastics in bottle water and all sorts of chemicals in our water supply the specialist that came out was a true educator, Passionate I can tell he loves what he does. The install process was so easy and having no maintenance is just a bonus of all the things the system can do Now I have the peace of mind and will smile when I see another article about our water being nasty because I have Phounatin to rely on highly highly recommended!!!

Jenn L.

6 months ago

The installation process was smooth and professional from start to finish. Highly recommend this service to anyone looking to improve their water quality. It will be a noticeable upgrade you’ll appreciate every day!

Sean C.

8 months ago

I just had a whole house water filter and reverse osmosis water filter installed in my house. I waited until I did water tests to write this review. The water quality is excellent and Rose was very accommodating through the whole process. Couldn’t be happier. Amazingly clean and refreshing water.

Kgilly24@gmail.com C.

8 months ago

We recently had a whole home system installed and LOVE it- just wish we did it sooner! From start to finish, the process was seamless. Our plumber Joe explained everything and was very knowledgeable about the product! We were amazed at how much sediment was in our copper pipelines-gross!! It’s a great feeling knowing we can drink water from the tap- no more plastic bottles! You can 100% taste the difference when drinking and our skin feels better after a shower. Highly recommend, you won’t regret the investment.

John F.

9 months ago

⭐⭐⭐⭐⭐ I had a great experience with pHountain Water Filtration. From the initial consultation to installation, everything was professional, efficient, and transparent. The team took the time to explain the system, answered all my questions, and made sure everything was set up perfectly. The difference in water quality was noticeable immediately—cleaner taste, better clarity, and peace of mind knowing my family is using high-quality filtered water. Customer service was excellent, pricing was fair, and the whole process was seamless. Highly recommend pHountain Water Filtration to anyone looking to improve their home or business water quality. I would strongly recommend pHountain Water

Rose V.

9 months ago

I purchased this filtration system over 5 years ago and it’s changed my life! The quality of the water is so good for your hair and skin, it has a great taste and saves so much money on bottled water. The health benefits are amazing and I would recommend it to anyone! The service they provide is exceptional. They are extremely professional and knowledgeable. Always responsive to questions and respond in a timely manner. Best decision we made for our family.

Frank R.

10 months ago

Just had a new water filter installed by Phountain Water Filtration. My wife and I are beyond Satisfied with it! They are extremely knowledgeable! And offer a great product! From beginning to end Glenn has been a pleasure to do business with. And his crew of professional plumbers besides being really polite. They went the extra mile to assure everything would be perfect! If you're considering a water filtration system for your home or business. I highly recommend them!

william M.

10 months ago

I called phountain and I had them come to my home . i had the sales man give me information on a full in home Water Filtration System. I like what I heard from the sales man. Then I purchased the system . I had them come and install the system. We totally love it . It changed our life so much . The salesman and installers were the best very clean and neat and professional . I would recommend this to anyone out there. Give them a call

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Service Areas

Whole-Home Water Filtration Across Long Island

Free in-home water testing and professional filtration installation throughout Nassau County and Suffolk County. Find your community below.

Nassau County

Western Long Island. PFAS, the Bethpage solvent plume, hard water, and chlorine byproducts.

Suffolk County

Eastern Long Island. 1,4-dioxane, PFAS, cesspool nitrogen, and iron in private wells.

Explore more: Long Island Overview All Service Areas Our Islip Location

Don’t see your town? We serve most communities across Nassau and Suffolk — call to confirm coverage for your address.

Book a Free Water Test 1-631-991-3995

FAQ

Clean answers for common water questions

What is a whole-home water filtration system?

A whole-home system (also called point-of-entry) is installed on your main water line, so every faucet, shower, and appliance in the house gets filtered water, not just one tap. Depending on the configuration, it can help reduce chlorine, sediment, and other common contaminants throughout your home.

What's the difference between whole-home filtration, reverse osmosis, and alkaline systems?

Whole-home filtration treats all the water entering your house and is ideal for chlorine, sediment, and hard water. Reverse osmosis is a point-of-use system, usually under the kitchen sink, that delivers highly purified drinking water. Alkaline and mineralizer systems add beneficial minerals and raise pH for better-tasting water. Many Long Island homes use a combination, and we recommend the mix that fits your water and household.

How much does a whole-home water filtration system cost?

Cost depends on your home's size, whether you are on municipal or well water, and the specific contaminants we need to address, so there is no one-size-fits-all price. After your free in-home water test, a specialist recommends the right system and gives you transparent pricing with no obligation. Every installed system is backed by a 10-year guarantee.

Is the free in-home water test really free?

Yes, it is completely free with no obligation. A local pHountain specialist comes to your home, tests your tap water, and explains the results in plain language. If your water warrants a system we will recommend one; if it tests clean, we will tell you that. Either way, the results are yours to keep.

Do you service private well water as well as municipal water?

Yes. Well water and municipal supply call for different treatment approaches, and our specialists are trained for both. Private wells, common across parts of Suffolk County, often need iron, manganese, sediment, and nitrogen addressed without any municipal treatment buffer. We match the system to your specific water chemistry.

How much maintenance do the systems need, and will they affect my water pressure?

Our systems are designed to be low-maintenance, and they are sized to protect your home's water pressure. Depending on the system, upkeep may be as simple as an occasional filter change, and replacement filters are available in our online store. We walk you through the exact service schedule for your setup during installation.

How do I get started?

Book a free in-home water test. A local specialist tests your water, walks you through the results, and recommends the right system with transparent pricing only if you need one. There is no pressure and no obligation. Call 1-631-991-3995 or request your free test online. pHountain serves all of Long Island, in both Nassau County and Suffolk County.

A glass being filled with clean, filtered water from an under-counter drinking water faucet

Find Your System

Find the Right Water Filtration System for Your Home

The best system depends on your home, your water source, and what’s actually in your water. Not sure where to start? A free in-home water test shows you exactly what you need — or browse our systems to explore the options.

Book a Free Water Test Online Store

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