Free Vermont water report: PFAS & lead levels for every water system, worst-affected cities, and EPA violations. Check your ZIP.
Vermont's approximately 647,000 residents make it one of the least populated states in the country, but its water quality challenges are disproportionate to its size. Drinking water comes from a mix of surface water sources – rivers, lakes, and springs – and groundwater wells, with a higher percentage of the population on private wells than in most states. Burlington, the largest city at roughly 45,000 people, draws from Lake Champlain. Many of the state's smaller communities rely on individual or small community well systems that receive limited monitoring. The Vermont Department of Environmental Conservation (DEC) oversees public water system regulation.
Vermont's PFAS story is unusual among states in that the primary contamination sources are not military but industrial and agricultural. The state has no major active military installations with documented AFFF contamination. Instead, PFAS has entered Vermont's water through two main pathways.
First, industrial sources: facilities in Bennington and elsewhere used PFAS-containing materials in manufacturing processes. The Bennington contamination, discovered in 2016, affected private wells in the area and prompted significant state response. The Vermont PFAS drinking water standard of 20 ppt for five combined PFAS compounds was adopted in part because of the Bennington experience.
Second, biosolids: treated sewage sludge applied to agricultural land as fertilizer has been identified as a PFAS source in Vermont. Dairy farms that accepted biosolids have found elevated PFAS levels in soil and water, and in some cases, in milk produced by cattle grazing on affected land. Vermont's agricultural identity – dairy farming is central to the state's economy and culture – makes this contamination pathway particularly significant.
The state has also identified PFAS in some landfill leachate and wastewater treatment plant discharges, consistent with patterns seen in other states.
Vermont has been more aggressive than many states on PFAS regulation, despite its small size. The state's combined MCL of 20 ppt for five PFAS compounds (PFOA, PFOS, PFHxS, PFHpA, and PFNA) is among the stricter standards nationally. Vermont also requires testing of public water systems and provides support for private well owners in affected areas – a meaningful distinction in a state where a large portion of the population is on private wells.
Compared to neighboring New Hampshire, which has dealt with major PFAS contamination from the Saint-Gobain facility in Merrimack, Vermont's contamination is more dispersed but arguably affects a wider range of communities through the biosolids pathway. Maine has faced similar biosolids-related PFAS issues and has responded with some of the most aggressive PFAS policies in the nation.
Vermont's small population means fewer resources for testing and remediation. State agencies have been creative in stretching limited budgets, but the reality is that many private wells in Vermont have never been tested for PFAS.
Private well reliance is the defining feature of Vermont's water quality situation. If your water comes from a municipal system, it is monitored under state and federal rules. If it comes from your own well, monitoring is your responsibility.
1. Check your water quality to see what data is available for your area. Municipal system data is more comprehensive; private well data is sparser. 2. If you own a private well – particularly in the Bennington area or near farmland that has received biosolids – get it tested for PFAS. The Vermont DEC offers guidance and in some cases financial assistance for well testing. Our water filter guide covers point-of-use treatment options certified for PFAS removal. 3. If your property is near agricultural land, ask your town about biosolids application history. This is a contamination pathway that many homeowners are not aware of. A detailed water report can help you understand the broader context for your area.
Vermont's identity as a green, rural, environmentally conscious state makes its PFAS challenges particularly jarring. The state was an early adopter of environmental regulation and has consistently ranked among the most aggressive states on environmental protection. The discovery of PFAS contamination – from sources as prosaic as sewage sludge applied to farm fields – challenged the assumption that Vermont's water was inherently safer than that of more industrial states.
The Bennington contamination, which came to public attention in 2016, was a watershed moment. Private wells near a former industrial facility showed PFAS levels many times above what would later become the state standard. The state response included alternative water supply for affected households, expanded testing, and legislative action that led to Vermont's current PFAS MCLs.
The biosolids issue has been slower to develop but potentially wider-reaching. Vermont's dairy farms have applied treated sewage sludge as fertilizer for decades – a practice encouraged by regulators as a way to beneficially reuse waste products. When testing revealed that biosolids contained PFAS, and that those compounds were transferring to soil, groundwater, and even crops, the implications rippled through the agricultural community. Several farms have had to cease operations or destroy contaminated milk.
Vermont banned the land application of sewage sludge containing PFAS above specified thresholds, joining Maine in taking legislative action on this pathway. But the legacy of decades of application remains in the soil and groundwater of affected farmland, and remediation timelines are measured in years to decades.
Lake Champlain, which supplies Burlington and is the state's most prominent water body, faces its own quality challenges – primarily from phosphorus loading that drives algal blooms, including cyanobacteria that can produce toxins. This is a separate issue from PFAS but adds to the overall water quality picture for northwestern Vermont.
Check your address to see current data for your part of Vermont. In a state where private wells are common and contamination sources are not always obvious, individual testing and awareness are your best tools.