# Water Treatment in Suffolk County, NY | Lucia Water > SCWA water testing, RO for 1,4-dioxane and PFAS, plus well water service for Suffolk County homes. Free test, bilingual. Canonical page: https://luciawatersolution.com/service-areas/suffolk-county-ny # Water treatment in Suffolk County, from SCWA to your own well The Suffolk County Water Authority is the largest groundwater authority in the country, serving about 1.2 million residents, but eastern Suffolk still has more private wells than almost anywhere else in our service area. - [Book Your Free Water Test](https://luciawatersolution.com/free-water-test) - [Call 845-879-2900](tel:+18458792900) - Free in-home testing - No obligation - SCWA and well water both - Bilingual service ## How does Suffolk County treat 1,4-dioxane in the water? Suffolk's water suppliers, including SCWA, have invested in Advanced Oxidation Process treatment for 1,4-dioxane, but reporting shows the county is still coping with the chemical years after it was first detected in multiple SCWA wellfields. SCWA is the largest groundwater-supplied water authority in the United States, serving roughly 1.2 million Suffolk residents from the same Magothy aquifer system shared with Nassau County. Suffolk has more private well households than Nassau, concentrated in the county's more rural eastern towns, though we could not confirm an exact county-wide percentage from a primary source. 0 residents served by SCWA, the largest groundwater authority in the US ## The county with the most wells, public and private Suffolk covers both the largest groundwater authority in the country and its own rural well population. - The Suffolk County Water Authority (SCWA) serves about 1.2 million residents and is the largest groundwater-supplied water authority in the United States. - 1,4-dioxane and PFAS are the headline contamination issues in SCWA territory, and reporting shows the county is still coping with 1,4-dioxane years after it was first detected. - SCWA and other Long Island providers have invested in Advanced Oxidation Process treatment specifically to address 1,4-dioxane at the wellfield level. - Suffolk has more private well households than Nassau, concentrated in the county's rural and eastern towns, though an exact county-wide percentage could not be confirmed from a primary source. - Hardness is typically reported around 28 ppm ('soft') by independent estimators, in line with the same Magothy aquifer groundwater that supplies Nassau County. ## From SCWA's treatment to your own tap SCWA customers and private well owners face different starting points here. ### Reverse osmosis for 1,4-dioxane and PFAS Even with SCWA's Advanced Oxidation investment, RO at your own tap adds a household-level layer of reduction for 1,4-dioxane and PFAS. - [Learn more](https://luciawatersolution.com/services/reverse-osmosis-alkaline-systems) ### Free well water testing If you're in one of Suffolk's rural eastern towns on a private well, testing comes first, since well quality varies far more than SCWA's public supply. - [Learn more](https://luciawatersolution.com/services/free-water-testing) ### UV disinfection for private wells Private wells outside SCWA's service territory don't get the same disinfection a public system provides. UV treatment addresses that gap. - [Learn more](https://luciawatersolution.com/services/whole-house-water-purification) ### Whole house filtration For SCWA customers who want broader protection than one filter, whole house treatment covers 1,4-dioxane, PFAS and general water quality at every tap. - [Learn more](https://luciawatersolution.com/services/whole-house-water-purification) ## Suffolk County's water, at a glance SCWA customers and rural well owners see different water. ## What a visit in Suffolk County looks like Suffolk County appointments are typically scheduled within the same week, with extra time built in for well-side testing in eastern towns. ### Call or book online Tell us if you're an SCWA customer or on a private well. 5 minutes - 1 ** ** ### In-home or well-side test A technician tests hardness, 1,4-dioxane-relevant indicators and PFAS-family compounds. 45 to 60 minutes - 2 ** ** ### Plain-language results We explain what we found and what it means for your specific water. Same visit - 3 ** ** ### A system built for your results Suffolk appointments are typically scheduled within the same week. Usually within the same week - 4 ## Two very different starting points An SCWA customer and a private well owner two towns apart can have completely different water, even though they're both in Suffolk County. That's why every Suffolk appointment starts with a test built around your actual source, not a countywide assumption. - [Book your test](https://luciawatersolution.com/services/free-water-testing) ## What locals actually ask Still not sure what applies to your home? Ask and get a straight answer, usually the same day. - [Ask Lucia directly](https://luciawatersolution.com/contact) - [845-879-2900](tel:+18458792900) ### Is SCWA water safe to drink in Suffolk County? #### 01 SCWA has invested in Advanced Oxidation Process treatment specifically for 1,4-dioxane, but reporting shows the county is still coping with the chemical years after it was first found in multiple wellfields, which is why in-home testing and household-level treatment still matter. ### How common are private wells in Suffolk County? #### 02 More common than in Nassau, especially in the county's rural and eastern towns, though we could not confirm an exact county-wide percentage from a primary source. If you're on one, a free test is the place to start. ### Is Suffolk County water hard? #### 03 Typically not very. Independent estimators put it around 28 ppm, in the soft range, consistent with the same Magothy aquifer groundwater that supplies neighboring Nassau County. ### What is 1,4-dioxane and why does Suffolk County keep dealing with it? #### 04 It's an industrial solvent found in multiple SCWA wellfields historically, and it resists standard carbon filtration, which is why Suffolk providers have had to invest specifically in Advanced Oxidation Process treatment rather than a simple filter swap. ## More ways we can help nearby - [Brentwood, NY](https://luciawatersolution.com/service-areas/brentwood-ny) - [Nassau County, NY](https://luciawatersolution.com/service-areas/nassau-county-ny) - [Reverse osmosis & alkaline systems](https://luciawatersolution.com/services/reverse-osmosis-alkaline-systems) - [Free water testing](https://luciawatersolution.com/services/free-water-testing) - [Whole house water purification](https://luciawatersolution.com/services/whole-house-water-purification) ## Ready for your free water test in Suffolk County? Whether you're on SCWA water or your own well, one visit tells you exactly what's in it. - [Book Your Free Water Test](https://luciawatersolution.com/free-water-test) - Free in-home testing - No obligation - Bilingual service - SCWA and well water both [Lucia Water Solutions](https://luciawatersolution.com) · [Privacy Policy](https://luciawatersolution.com/privacy-policy) · [Terms and Conditions](https://luciawatersolution.com/terms) · Powered by [Launch Automation](https://launchautomation.ai/custom)