Paterson’s Water Story Is About the Passaic River. But the Ground Beneath It Has Its Own Arsenic Problem.
The conversation about Paterson’s water quality has always centered on the Passaic River — PFAS from industrial discharge, the contamination legacy of the watershed, the challenges of treating a compromised surface water source. What gets less attention is the geological arsenic risk that exists beneath the surface water conversation. Passaic County sits within New Jersey’s elevated-risk zone for naturally occurring arsenic in groundwater, and for any Paterson-area home on a private well, that geology is directly relevant to what’s in the drinking water. For municipal customers, the Passaic Valley Water Commission’s treatment provides meaningful protection. But for any private well owner, a professional water test that specifically screens for arsenic is the starting point.
Passaic County’s Geological Arsenic Risk
Arsenic is a naturally occurring element that enters groundwater through contact with arsenic-bearing geological formations. Passaic County’s mixed crystalline and sedimentary bedrock geology places it within New Jersey’s elevated-arsenic groundwater zone — the same geological profile that drives higher arsenic concentrations in well water throughout Morris, Hunterdon, Sussex, and Warren counties. For municipal customers, the Passaic Valley Water Commission processes water to meet federal arsenic standards. For private well owners, there’s no treatment buffer — geology’s contribution to groundwater arsenic arrives at the tap unchanged. Nearby Clifton, Wayne, Totowa, and Fair Lawn homeowners on private wells share the same considerations.
What Arsenic Exposure Does Over Time
Arsenic in drinking water doesn’t produce immediate, obvious symptoms. It works through accumulation — years of exposure building to health effects that have no obvious connection to the water. The EPA classifies arsenic as a known human carcinogen. Long-term elevated exposure has been associated with increased risk of bladder, lung, and skin cancers, along with cardiovascular and neurological effects. For children and during pregnancy, developmental concerns add additional urgency. There are no sensory warnings — arsenic has no taste, no smell, and no visual indicator at health-relevant concentrations. Testing is the only way to find it.
The Regulatory Gap for Private Well Owners
The federal arsenic standard applies to public water systems — not private wells. Paterson’s municipal supply is subject to mandatory testing and public reporting. Private well owners have none of these protections. No government program tests private wells for arsenic. The homeowner’s responsibility for knowing what’s in the well water is complete and unshared.
Arsenic Risk by Scenario — Paterson Area Homeowners
| Scenario | Risk Level | Recommended Action |
|---|---|---|
| Private well in Passaic County bedrock geology | Higher — mixed crystalline bedrock is a documented arsenic source | Test immediately; include in any comprehensive well panel |
| Paterson municipal water customer | Lower — PVWC treatment and mandatory testing apply | Review annual water quality report; test if concerned |
| Well water, never tested for arsenic | Unknown — no baseline established | Test now; arsenic requires a specific laboratory analysis |
| Home purchase with private well | Unknown — prior testing may be outdated | Test before or immediately after closing |
| Well tested more than 3 years ago | Uncertain — groundwater chemistry can shift | Retest; arsenic levels in wells are not static |
What Testing Involves
An arsenic test requires a water sample collected at the tap and submitted to a certified laboratory — it must be specifically requested and is not part of any standard panel. Our professional water testing page covers what a comprehensive assessment involves. If arsenic is found at levels warranting action, our arsenic removal page covers treatment options. For the broader picture in Paterson, our Paterson water testing page covers local concerns. Our full New Jersey service area covers communities statewide.
Frequently Asked Questions — Arsenic in Drinking Water in Paterson, NJ
Is naturally occurring arsenic a concern in Passaic County well water?
Yes. Passaic County’s mixed crystalline and sedimentary bedrock geology places it within New Jersey’s elevated-arsenic groundwater zone. Private well owners draw from an aquifer environment where naturally occurring arsenic concentrations are higher than in South Jersey’s sedimentary areas. Testing a specific well gives you a direct answer for that well.
Does Paterson’s PFAS contamination history relate to arsenic risk?
They are separate concerns — different sources, different chemistry, different health implications. Both are valid water quality concerns, but they address different problems and require different tests. A comprehensive water quality panel should include both.
Can arsenic be detected without laboratory testing?
No. Arsenic at health-relevant concentrations is completely undetectable by taste, smell, or appearance. Laboratory testing is the only reliable detection method.
Is arsenic included in a standard water quality panel?
No. It must be specifically requested as a separate analysis. Standard panels covering bacteria, nitrates, and hardness do not include arsenic unless explicitly ordered.
How soon can testing be arranged?
We’re typically able to schedule within a few days. Sample collection takes under an hour, and laboratory results return within one to two weeks.
Get a Clear Answer on Arsenic in Your Paterson Area Home’s Water
If you’re on a private well in Passaic County and haven’t specifically tested for arsenic — this is a straightforward and important question to answer. We serve Paterson and all of Passaic County. Call us at (732) 357-1988 or reach out online.
