The Raritan Basin Has a Documented PFAS Problem. Edison Homeowners on Private Wells Are on the Front Line of It.
The Raritan River watershed — the primary source water system for much of Central New Jersey including the municipal supply for Edison’s utility customers — has documented PFAS contamination from industrial sources along the Route 1 corridor and throughout the basin. For Edison homeowners on municipal water, the utility tests, treats, and reports PFAS levels against New Jersey’s strict standards. For Edison homeowners in the township’s less-developed areas drawing from private wells, no equivalent protection applies — and the Raritan Basin contamination profile makes PFAS testing a more urgent priority here than in areas with less-affected groundwater. This page explains what PFAS are, how they’ve reached Edison area water supplies, and what homeowners can do with that information.
What PFAS Are — The Chemistry of Persistence
Per- and polyfluoroalkyl substances — PFAS — are a category of more than 12,000 synthetic chemical compounds united by an exceptionally strong carbon-fluorine bond. That bond gives PFAS commercially valuable properties — chemical resistance, heat stability, water and oil repellency — and makes them environmentally indestructible. PFAS don’t break down under heat, UV light, biological processes, or water exposure. Once in the environment, they persist indefinitely.
In groundwater, PFAS move with aquifer flow — spreading from contamination sources through the geological formations that carry water to private wells. In surface water, they travel with river and reservoir systems. In both cases, they accumulate and persist without degrading. Standard water treatment processes — coagulation, conventional filtration, sedimentation — don’t reliably remove them. Activated carbon filtration and reverse osmosis are the established household treatment approaches. The EPA’s PFAS overview covers the full scientific and regulatory background.
How PFAS Reached the Raritan Basin — and Why Edison Is in the Conversation
The Raritan River watershed spans a significant industrial corridor in Central New Jersey. Decades of manufacturing activity — chemical production, electronics manufacturing, aerospace components, consumer product coating facilities — introduced PFAS into soil and groundwater through discharge, waste disposal, and process water handling. The Raritan Basin has been subject to PFAS monitoring given the documented contamination from multiple historical sources.
Aqueous film-forming foam (AFFF) — used at industrial facilities and emergency response training sites — is another concentrated PFAS source throughout the basin. AFFF-related contamination plumes spread through soil into groundwater without respecting property or municipal boundaries.
The NJDEP PFAS resources page provides current information on known contamination sites, monitoring data, and regulatory status across the state, including Middlesex County.
Municipal Water vs. Private Wells — The PFAS Protection Gap in Edison
Edison’s municipal utility customers draw from a treated supply that is required to test for PFAS, meet New Jersey’s maximum contaminant levels, and report publicly. Municipal customers can access the annual consumer confidence report to see where PFAS stands against state limits. New Jersey’s PFAS standards are among the strictest in the country.
Edison homeowners on private wells — in the township’s less-developed residential areas drawing from Middlesex County groundwater — have no equivalent protection. No mandatory testing requirement applies. No government program monitors private wells for PFAS. The Raritan Basin contamination profile makes the question more relevant here than in lower-risk areas. Testing is the only way to establish what a specific well is actually delivering to the tap.
Health Considerations — What the Research Shows
Long-term exposure to elevated PFAS in drinking water has been associated with health concerns in a substantial body of research: immune system effects, thyroid hormone disruption, cholesterol elevation, and increased risk of certain cancers with prolonged exposure at elevated concentrations. The EPA, CDC, and NJ DEP all recommend precautionary action when PFAS exceeds established thresholds. These are long-term cumulative effects — not acute reactions — and the appropriate response is accurate measurement followed by informed treatment decisions. The CDC’s PFAS health guidance provides regularly updated summaries of the research.
PFAS in Edison’s Water Context
| Contaminant | Source in Raritan Basin Context | Detection | Why It Matters |
|---|---|---|---|
| PFAS (broad) | Industrial discharge along Route 1 corridor and throughout basin | Specific lab test — no sensory indicator | Persistent; long-term exposure concern |
| PFOA | Manufacturing runoff, chemical plant discharge | PFAS panel lab test | NJ MCL established; most studied compound |
| PFOS | AFFF at industrial and training facilities | PFAS panel lab test | Significant plumes in Central NJ groundwater |
| PFNA, GenX | Industrial substitutes and byproducts | Comprehensive PFAS panel | NJ has specific MCLs for both |
Testing and Treatment in Edison
A PFAS water test requires a specific laboratory analysis ordered separately from standard panels. Results in parts per trillion are compared against New Jersey’s MCLs. If levels warrant action, whole-home activated carbon filtration and reverse osmosis at the kitchen tap are the most effective household approaches. Full treatment detail is available through our PFAS removal resources. For the full Edison water quality picture, water testing in Edison covers the complete contaminant profile. Our full New Jersey service area covers communities statewide.
Frequently Asked Questions — PFAS in Edison, NJ Drinking Water
Has PFAS been detected in Edison’s water supply?
PFAS has been documented in the Raritan Basin watershed that supplies Edison’s municipal utility. The utility tests and reports against New Jersey’s MCLs in its annual consumer confidence report. For private well owners in Edison, no equivalent monitoring applies — testing is the homeowner’s responsibility.
Is PFAS testing different from the water softening panel Edison homeowners typically get?
Yes — completely different. A water softener assessment tests hardness, iron, and minerals. PFAS requires a specific laboratory analysis ordered separately. Standard water quality panels don’t include PFAS. If PFAS wasn’t explicitly on a previous test, that question hasn’t been answered.
Should Edison private well owners prioritize PFAS testing?
Given the Raritan Basin’s documented contamination profile and the absence of regulatory protection for private wells, yes — PFAS should be part of any comprehensive Edison well water baseline panel. The contamination history of the basin makes the concern more relevant here than in less-affected groundwater areas.
Can the same filtration system that treats hard water also address PFAS?
No. Water softeners address hardness minerals and don’t remove PFAS. Activated carbon filtration and reverse osmosis are the technologies effective for PFAS. For Edison homeowners who want to address both hard water and PFAS, a softener and a reverse osmosis system under the kitchen sink work together — each doing what it’s designed to do.
How long does PFAS testing take?
Sample collection takes under an hour. PFAS-specific lab analysis typically returns results in two to three weeks. We walk through what the results mean and what options apply to your specific property when they come back.
Get PFAS Testing Arranged for Your Edison Home
If you’re an Edison homeowner on a private well who hasn’t specifically tested for PFAS — or a municipal customer who wants property-specific certainty beyond the utility’s annual report — we can help. We serve Edison and all of Middlesex County. Call us at (732) 357-1988 or reach out online.
