PFAS in Your Well Water: What Hunterdon Homeowners Need to Know
PFAS — "forever chemicals" — have become one of the most talked-about water quality issues in the country over the past several years, and New Jersey has been more aggressive than most states in actually regulating them. Here's what that means for a private well owner in Hunterdon County specifically.
What PFAS actually is
PFAS (per- and polyfluoroalkyl substances) is a large family of thousands of related synthetic chemicals, valued historically for resisting heat, water, and grease. That made them useful in things like firefighting foam (particularly at sites with fire training or aircraft-related activity), non-stick cookware coatings, water-resistant fabric treatments, and some industrial processes. The tradeoff is that they break down extremely slowly in the environment — hence "forever chemicals" — and can persist in groundwater for a long time once introduced.
Why New Jersey treats this seriously
New Jersey was among the first states in the country to set its own enforceable drinking water standards for specific PFAS compounds, ahead of federal action. That's why the PWTA panel already includes three of them — PFOA, PFOS, and PFNA — as a mandatory part of every standard test, not an optional add-on. New Jersey's maximum contaminant levels for these compounds are stricter than many other states', reflecting the state's own health-based risk assessment.
How PFAS could end up in a Hunterdon County well specifically
Unlike the uranium and naturally occurring mineral story (a matter of what bedrock a well passes through), PFAS contamination is typically tied to a specific historical source rather than broad regional geology:
- Fire training areas — airports, fire departments, and military-adjacent sites have historically used PFAS-containing firefighting foam, and groundwater near these sites carries elevated risk.
- Industrial history — manufacturing sites that used PFAS-containing coatings or treatments.
- Agricultural inputs — some older pesticide formulations and biosolid fertilizers have been identified as PFAS sources in certain regions.
- Landfills and waste sites — PFAS-containing consumer products disposed of over decades can leach from older landfill sites.
Most Hunterdon County wells, being far from dense industrial history, won't have an obvious PFAS source nearby — but "no obvious source" isn't the same as "guaranteed clean," which is exactly why it's part of the mandatory panel rather than something tested only near known risk sites.
Should you test beyond the standard three compounds?
The mandatory panel covers PFOA, PFOS, and PFNA specifically because those have the most established health data and enforceable standards. But PFAS as a chemical family includes many more compounds than just those three, and expanded panels exist for homeowners who want a broader screen — particularly relevant if you know of a specific nearby source (a fire training facility, known industrial history, or a documented plume in your immediate area). See PFAS & Contaminant-Specific Testing for how expanded screening works.
What a PFAS exceedance means and what happens next
Unlike some naturally occurring parameters, a PFAS exceedance generally does need a dedicated treatment response — specific filtration technologies (activated carbon or reverse osmosis, depending on the compound and concentration) are effective, but this isn't something a general-purpose filter reliably handles. See Water Treatment Referral & Consultation for getting connected to someone qualified to address it, and always retest after any system is installed to confirm it's actually working.
Bottom line
PFAS testing isn't optional guesswork in New Jersey — it's built into the standard PWTA panel because the state has decided the risk warrants it. For most Hunterdon County wells the standard three-compound screen is sufficient, but if you have a specific reason to be concerned about a nearby source, expanded testing is a reasonable next step.