Family Owned & Operated Since 1980
Published May 6, 2026
If your home is served by a private well in Vermont, PFAS contamination is not an abstract concern - it is a documented problem in many parts of the state. Private wells are not routinely tested or regulated, so knowing what is in your water falls entirely on you. This guide covers what PFAS are, why Vermont wells are vulnerable, how to get your well tested, and which treatment systems actually remove these chemicals.
PFAS (per- and polyfluoroalkyl substances) are a family of more than 12,000 synthetic chemicals used in industrial products and consumer goods since the 1940s - non-stick cookware, stain-resistant fabric, food packaging, and firefighting foam. They are called "forever chemicals" because their carbon-fluorine bonds are extraordinarily resistant to breaking down in the environment or in the human body. The two most studied compounds are PFOA (perfluorooctanoic acid) and PFOS (perfluorooctane sulfonic acid), but the broader family includes GenX chemicals, PFNA, PFHxS, PFHpA, and many others. Once these compounds enter groundwater, they travel with water movement and persist in aquifers for decades.
Vermont's geology and land-use history combine to put private wells at risk:
Proximity to known contamination sites. Airports, former military installations, industrial facilities, and landfills have historically used or disposed of PFAS-containing materials, particularly aqueous film-forming foam (AFFF). Groundwater plumes from these sites can travel considerable distances.
Agricultural land application of biosolids. Vermont farms have historically received biosolids (treated sewage sludge) as a soil amendment. Biosolids can contain elevated levels of PFAS that leach into the soil and eventually into groundwater - including the shallow aquifers many private wells draw from.
Fractured bedrock aquifers. Much of Vermont's rural well water comes from drilled wells in fractured bedrock. Fractures can act as fast pathways for contaminated water to travel from surface sources into a well's supply zone, bypassing the natural filtration that unconsolidated sediment would otherwise provide.
Lack of routine monitoring. Vermont's approximately 80,000 private wells are not subject to the same ongoing monitoring requirements as public water systems. Many homeowners have never tested for PFAS at all.
The Vermont Department of Environmental Conservation and the Agency of Natural Resources have investigated PFAS contamination in several Vermont communities, and confirmed private well impacts have grown steadily as testing has expanded.
PFAS accumulate in the body over time. Research reviewed by the EPA and other public health agencies has associated long-term exposure with kidney and testicular cancers, liver damage, elevated cholesterol, thyroid disruption, immune system effects (including reduced vaccine response), and developmental impacts in children and infants. Pregnant women, nursing mothers, infants, and young children are considered especially vulnerable. Individual risk depends on the concentration and the specific compounds involved, but there is currently no established "safe" level of PFAS exposure - which is why regulators have moved toward very low maximum contaminant levels.
Vermont established one of the earliest and strictest state PFAS drinking water standards in the country: a maximum contaminant level (MCL) of 20 parts per trillion (ppt) for the combined concentration of five specific compounds - PFOA, PFOS, PFHxS, PFHpA, and PFNA - applying to public water systems under Vermont's drinking water rules. In 2024, the EPA finalized a federal rule establishing MCLs for six PFAS compounds, including individual MCLs for PFOA and PFOS at 4 ppt each - the most stringent federal PFAS limits to date.
Neither Vermont's 20 ppt MCL nor the new federal rule directly regulates private wells; Vermont well owners are not required by law to test for PFAS or remediate contamination. But the regulatory context matters: it reflects the scientific consensus that PFAS levels need to be very low to protect health, and it gives private well owners a benchmark for evaluating their own test results.
Testing a private well for PFAS requires a state-certified laboratory - not a basic home test kit or a standard free in-home water test. Clear Water Filtration's free in-home test covers hardness, iron, manganese, pH, total dissolved solids (TDS), and chlorine - useful for diagnosing common problems and sizing equipment - but PFAS analysis requires specialized laboratory equipment (typically liquid chromatography-tandem mass spectrometry) and strict sample-handling protocols only available through certified labs.
Through our certified-lab partner program, we can arrange PFAS testing for your well: a sample collected under the lab's certified protocol, chain-of-custody documentation, and a full PFAS panel report. We review the results with you and, if treatment is warranted, recommend the right system. If you have a known contamination source nearby - a former military site, an airport, a farm that received biosolids, or a reported PFAS plume - testing sooner rather than later is a reasonable precaution. Vermont's Agency of Natural Resources maintains a publicly accessible map of known PFAS investigation sites.
Several proven treatment technologies remove PFAS from drinking water effectively. The right choice depends on whether you need point-of-use treatment (a single tap, typically the kitchen) or point-of-entry treatment (all water entering the home).
Reverse osmosis forces water through a semi-permeable membrane that blocks PFAS molecules along with lead, arsenic, nitrates, and many volatile organic compounds. A properly maintained RO system at the kitchen tap - such as the Kinetico K5 Drinking Water Station - is one of the most effective point-of-use options for PFAS removal; it requires periodic membrane and filter replacement. Whole-home point-of-entry RO is available but significantly more expensive and requires larger flows. For most households, a quality under-sink RO system with a dedicated filtered faucet protects the water you actually drink and cook with. Learn more about reverse osmosis systems for Vermont homes.
Granular activated carbon uses highly porous carbon media to adsorb PFAS as water passes through the filter bed. GAC is effective for many longer-chain PFAS compounds and is widely used in municipal treatment. Whole-house GAC systems provide point-of-entry protection, but the carbon's adsorption capacity is finite - once exhausted, PFAS pass through untreated. Sizing and media replacement schedules depend on your water's PFAS concentration and flow rate.
Single-use anion exchange resins (specifically PFAS-selective resins) are a high-performance option, particularly for short-chain PFAS that activated carbon handles less efficiently. They can be configured as whole-home point-of-entry units or under-sink point-of-use systems and, like GAC, require regular media replacement or regeneration.
Clear Water Filtration carries and services PFAS treatment systems appropriate for Vermont well water. For a home with confirmed PFAS, we assess the specific compounds present, your water's chemistry (iron, hardness, and pH all affect system selection), and your household's flow needs before recommending a system. Explore our PFAS and PFOA water treatment systems for Vermont homes.
We have been treating Vermont water since 1980, and PFAS has become one of the most frequent concerns we hear from private well owners. Customers near known contamination sites have used certified lab testing through our partner program to establish a baseline, then installed whole-home GAC systems or under-sink RO units based on their specific results. For families with young children or pregnant household members, a verified treatment solution is often the deciding factor. Our Class III Water Operator and Certified Water Specialist on staff (Jen Fleckenstein, CWS) reviews treatment system selections for PFAS applications to ensure the equipment is properly matched to the water chemistry and PFAS profile. Government PFAS treatment contracts in Vermont have also given us extensive hands-on experience with high-performance PFAS treatment systems at scale - experience that directly benefits our residential customers.
Call 802-496-5544 or schedule a free in-home water test. We can connect you with certified PFAS lab testing and recommend the right treatment system for your home.
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