pHountain Water Filters — Service Areas
We Come to You — Wherever You Are on Long Island
From the Nassau County border with Queens to the East End of Suffolk, from the South Shore to the North Shore, and up through Westchester — pHountain brings free in-home water testing and whole-home filtration to every community we serve. Select your area below to learn about your local water quality and schedule your free assessment.
Find Your Area
Select Your Region to See Local Water Quality Information
Each region has its own documented water quality challenges. Click your area for specific contaminant information, local FAQs, and a direct path to your free water test.
Umbrella Region
Long Island
Nassau + Suffolk counties. The Long Island Sound Aquifer — EPA Sole Source designation. PFAS, 1,4-dioxane, nitrogen, and more.
County Page
Nassau County
Western Long Island. PFAS from the Bethpage plume, hard water, and chlorine disinfection byproducts throughout central Nassau.
County Page
Suffolk County
Eastern Long Island. 1,4-dioxane, PFAS, nitrogen from cesspools, iron in private wells, and Great South Bay watershed impact.
County Page
Westchester County
North of NYC. Lead from pre-1986 plumbing, chloramine disinfection, PFAS near Westchester County Airport, and radon in northern wells.
Nassau County Communities
Nassau County Service Areas
Nassau County sits in the path of the Bethpage PFAS contamination plume — one of the most significant groundwater contamination events in Long Island history. Each Nassau community has its own specific water quality profile based on its proximity to contamination sources, the age of its housing stock, and its position within the Nassau County Water Authority’s distribution network.
View Full Nassau County PageLevittown
PFAS · Lead Risk
View PageHempstead
PFAS · Aging Infrastructure
View PageMassapequa
PFAS · Hard Water
View PageMore Towns
Garden City · Valley Stream · Freeport · Hicksville and more
Call to check coverageSuffolk County Communities
Suffolk County Service Areas
Suffolk County faces a layered set of water quality challenges: 1,4-dioxane from industrial operations in western and central Suffolk, PFAS from multiple contamination sources, nitrogen from an estimated 360,000 aging cesspools, and iron-rich private well water throughout the county’s rural and suburban areas.
View Full Suffolk County PageIslip
Hard Water · Chlorine
View PageBay Shore
1,4-Dioxane · PFAS
View PageBabylon
1,4-Dioxane · Nitrogen
View PagePatchogue
1,4-Dioxane · Bay Watershed
View PageHuntington
PFAS · Private Wells
View PageSmithtown
PFAS · Well Water
View PageCommack
PFAS · 1,4-Dioxane
View PageMore Towns
Amityville · Lindenhurst · Hauppauge · East Northport and more
Call to check coverageWestchester County
Serving Westchester County, NY
Westchester County carries a distinct water quality profile from Long Island. The primary concern is lead from pre-1986 plumbing in a county where a significant share of the housing stock predates the EPA’s lead ban. Chloramine — used instead of chlorine for disinfection in the NYC water supply serving southern Westchester — forms a different set of disinfection byproducts than chlorine. Private well users in northern Westchester face elevated radon risk due to the granite and gneiss bedrock geology.
- Southern Westchester: Yonkers, Scarsdale, New Rochelle, Bronxville
- Central Westchester: White Plains, Tarrytown, Ardsley, Elmsford
- Northern Westchester: Chappaqua, Pleasantville, Katonah, Somers
Key Westchester Alert
Lead from pre-1986 plumbing is the primary concern for Westchester homeowners. Lead has no taste or odor and cannot be detected without testing. Homes built before 1986 may have lead solder at pipe joints. Homes built before 1950 may have lead service lines.
Test for Lead — FreeQuick Coverage Facts
- Water sourceNYC reservoir + private wells
- Primary concernLead · Chloramine · Radon
- Response timeSame or next business day
Our Approach
Why We Test at Your Home — Not from a Lab Mail-In Kit
Water quality varies block by block, building by building. A county-wide average or a mail-in test that sits in transit cannot tell you what’s coming out of your specific tap today.
Address-Level Precision
Your home’s plumbing, your supply well, your section of the distribution network. We test what’s actually coming out of your tap.
Comprehensive Panel
PFAS, lead, 1,4-dioxane indicators, chlorine, hardness, iron, nitrates, pH. Not a basic 3-parameter kit — a full picture.
Plain-Language Results
Our specialist explains every result in plain language before leaving your home. No lab jargon, no pressure, no unanswered questions.
No-Pressure Policy
If your water tests clean, we tell you that. Our reputation is built on honest assessments — not on selling to every homeowner we visit.
Free Assessment
Book Your Free In-Home Water Test
Tell us your location and we’ll match you with the specialist who knows your area’s specific water quality challenges. We serve Nassau County, Suffolk County, Westchester County, and surrounding communities throughout the New York metropolitan area.
Every free water test includes:
- PFAS screening for Long Island and Westchester zones
- Lead testing for older homes
- 1,4-dioxane indicators for western and central Suffolk
- Iron, manganese, and hardness (well water focused)
- Chlorine, THMs, nitrates, pH, and TDS
- Written results and a system recommendation only if warranted
Your results are yours to keep — regardless of whether you proceed with a system.
Schedule Your Free Water Test
We respond within one business day — often same day.
Common Questions
Frequently Asked Questions About Our Service Areas
Which areas does pHountain serve?
pHountain Water Filters is based in Islip, NY and serves Nassau County, Suffolk County, and Westchester County. Within Long Island, we have town-level service area pages for Levittown, Hempstead, Massapequa (Nassau County) and Islip, Bay Shore, Babylon, Patchogue, Huntington, Smithtown, and Commack (Suffolk County). If your town is not listed, call us at 1-631-991-3995 to confirm whether we serve your specific address — our coverage area continues to expand.
Does pHountain serve both Nassau County and Suffolk County?
Yes. Nassau and Suffolk are both fully within our service area. Nassau County faces PFAS contamination from the Bethpage plume among other sources. Suffolk County faces 1,4-dioxane from industrial sources in western and central Suffolk, PFAS, nitrogen from cesspools, and iron in private wells. The water quality challenges differ significantly between counties — and often between neighborhoods — which is why we conduct in-home tests rather than applying a regional solution to every customer.
Do you serve private well owners as well as municipal water customers?
Yes. Private well water and municipal supply require different assessment approaches, and pHountain’s specialists are trained for both. Private well owners in Suffolk County — particularly in Huntington, Smithtown, and parts of eastern Suffolk — face elevated iron, manganese, and PFAS risk without any municipal treatment buffer. Our well water assessment includes the full panel relevant to your aquifer zone. Municipal supply customers receive an assessment focused on the specific contaminants and treatment byproducts relevant to their supply district.
How far does pHountain travel for an in-home water test?
Our standard service area covers Long Island (Nassau and Suffolk counties) and Westchester County. We’re based in Islip, which puts us within reasonable driving distance of virtually every Long Island community. For Westchester, we schedule appointments across the county from south to north. If you’re outside our listed service area, call us at 1-631-991-3995 — we may be able to accommodate depending on your location.
My town isn’t listed. Do you still serve it?
Very likely yes. The town-level pages on this site represent communities with particularly well-documented water quality concerns. They don’t represent the full extent of our coverage. We serve communities throughout Nassau and Suffolk counties regardless of whether they have a dedicated page on our site. Call us at 1-631-991-3995 or submit the form above with your town name and we’ll confirm availability and schedule your free in-home water test.
Is the water test truly free with no strings attached?
Yes. The in-home water test is completely free. You receive a written summary of your results. If the results indicate a water quality concern, we’ll recommend the appropriate system with transparent pricing — no hidden fees. If your water tests clean, we tell you that and thank you for your time. We do not require a purchase, a follow-up appointment, or any commitment. Our business depends on homeowners choosing us because they trust us — not because they felt pressured.
Ready to Get Started?
Find Out What’s in Your Water — Free, at Your Home
Every Long Island and Westchester community has its own water quality story. Let pHountain come to yours and tell you exactly what you’re working with — no obligation, no pressure, no guesswork.