West Islip Tap Concerns After Willetts Creek PFAS Alerts – What Homeowners Can Do Now
PFAS “forever chemicals” were detected in Long Island waters, including Suffolk County. Learn what this means for West Islip water…
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 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 removes 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
Reverse Osmosis
- Multi-stage purification for pure drinking water
- Helps remove dissolved solids, sediment, and odor
- Crisp, clean water right at your kitchen tap
Water Filtration
- Reduces chlorine, sediment, and common contaminants
- Whole-home and under-counter options available
- Cleaner water for drinking, showers, and appliances
Mineralizers
- Restores healthy minerals to purified water
- Supports a naturally alkaline, balanced pH
- A perfect finishing stage for reverse osmosis
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
What Long Island homeowners are saying
Real, verified Google reviews from families across Nassau and Suffolk County.
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.
Don’t see your town? We serve most communities across Nassau and Suffolk — call to confirm coverage for your address.
Know Your Water
Long Island Water: What Homeowners Should Know
Groundwater is the sole source of fresh water for Nassau and Suffolk Counties.[1] Public water systems treat it to meet federal and state drinking water standards and monitor its quality continuously.[2] Here is what those standards cover, how they apply to private wells, and where to read more.
PFAS Limits and the Timeline
New York has limited two PFAS chemicals, PFOA and PFOS, to 10 parts per trillion (ppt) in public water since 2020, and water above that level must be treated.[3] EPA’s national limit of 4.0 ppt for each was finalized in April 2024, with compliance due by 2029.[4] In May 2026, EPA proposed letting water systems request two more years, to 2031.[5] In June 2026, the New York State Legislature passed a bill to lower the state limits to 4 ppt; as of October 2026, it had not been signed into law.[6]
Our PFAS guide1,4-Dioxane: A New York First
In 2020, New York became the first state to set a drinking water limit for 1,4-dioxane: 1 part per billion.[3] Your supplier’s annual water quality report lists the regulated contaminants found in your water.[7]
Our 1,4-dioxane guideThe Bethpage Plume Cleanup
New York’s environmental and health departments are overseeing the cleanup of the Navy Grumman groundwater plume in Bethpage; its main contaminant is the solvent TCE.[2] Their January 2026 update says the public water supplied to homes meets strict state drinking water standards and is safe to drink.[2]
Read our Bethpage plume articlePrivate Wells Are Up to the Owner
Private wells aren’t regulated under the federal Safe Drinking Water Act, so well owners are responsible for their own water.[8] Suffolk County estimates 40,000 to 45,000 private wells serve over 200,000 people, and its health department runs a private well testing program.[9]
Our private well guideNitrate and Septic Nitrogen
EPA’s limit for nitrate in public drinking water is 10 mg/L, measured as nitrogen; common sources include fertilizer runoff and leaking septic tanks.[10] Suffolk County notes that conventional septic systems were never designed to remove nitrogen, which eventually reaches groundwater, even inland.[11]
Nitrate, explainedLead Usually Comes From Plumbing
Lead can enter tap water when plumbing that contains lead corrodes; the most common sources are lead pipes, faucets and fixtures.[12] Where a lead service line connects a home to the water main, it is typically the biggest source, and lead pipes are more likely in homes built before 1986.[12]
Lead in drinking water, explainedDiscolored Water: Iron and Manganese
Iron above 0.3 mg/L can give water a rusty color and metallic taste, and manganese above 0.05 mg/L can turn it black or brown.[13] EPA sets these levels as non-mandatory guidelines for taste, color and odor, and at those levels they are not considered a risk to human health.[13]
Discolored water, explainedCheck Your Own Water
Is your home on public water? Your supplier must send you an annual drinking water quality report by July 1 each year.[7] For a closer look at the water in your home, book a free in-home water test: a local pHountain specialist tests your water and explains the results, with no pressure.
Book a Free Water Test How to read your water quality reportSources
- U.S. Geological Survey, Long Island Groundwater
- NYS Department of Environmental Conservation, Navy Grumman Groundwater Plume Cleanup Update, January 2026
- NYS Department of Health, Public Water Systems and Drinking Water Standards for PFAS and Other Emerging Contaminants
- U.S. EPA, Per- and Polyfluoroalkyl Substances (PFAS): Final Drinking Water Rule
- U.S. EPA, Proposed PFOA and PFOS Compliance Extension Rule
- New York State Senate, Senate Bill S3207B (2025-2026): PFAS Maximum Contaminant Levels
- U.S. EPA, CCR Information for Consumers
- U.S. EPA, Private Drinking Water Wells
- Suffolk County Department of Health Services, Private Well Water Testing Program
- U.S. EPA, National Primary Drinking Water Regulations
- Suffolk County, Innovative and Alternative Septic Systems (Reclaim Our Water)
- U.S. EPA, Basic Information about Lead in Drinking Water
- U.S. EPA, Secondary Drinking Water Standards: Guidance for Nuisance Chemicals
Sources checked .
Customer Story
From Sediment in the Pipes to Drinking From the Tap
One homeowner’s whole-home installation, in their own words from a Google review.
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The issue
Sediment in the home’s copper water lines.
“We were amazed at how much sediment was in our copper pipelines-gross!!”
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The system
A whole-home water filtration system, professionally installed.
“Our plumber Joe explained everything and was very knowledgeable about the product!”
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The result
Drinking water from the tap instead of plastic bottles.
“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…”
K. C., 5-star Google review, February 2026. Excerpts quoted word for word; every home’s water is different, so results vary. Read the review on Google
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.
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.
Local Water News
Water Quality Insights for Long Island Homeowners
Practical, up-to-date reads on Long Island water quality, filtration technology, and keeping your home’s water clean and safe.
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Contact & Location
Visit the pHountain Water Filtration Office
Based in Islip and serving homeowners across Long Island. Call, email, or stop by — we’re always happy to help.