Everyone Talks About What’s in the Passaic River. Fewer Ask What’s in the Ground Beneath Clifton.
Clifton’s water quality conversation is dominated by the Passaic River — PFAS from industrial discharge, decades of watershed contamination, the challenge of treating a compromised surface water source. These are legitimate concerns. But they address what enters the water from human activity. Arsenic in groundwater is a different kind of problem — one that enters from geology, not from industrial history, and one that affects private well owners in ways that the Passaic River supply conversation doesn’t capture. Passaic County’s mixed crystalline bedrock geology places it within New Jersey’s elevated-risk zone for naturally occurring arsenic in groundwater. For any Clifton-area home on a private well, that’s directly relevant. For municipal customers, the Passaic Valley Water Commission’s treatment provides protection — but private well owners have no equivalent safeguard. A professional water test specifically including arsenic is the only way to know.
The Geological Source of Arsenic in Passaic County Well Water
Arsenic enters groundwater through contact with arsenic-bearing rock formations — a geological process, not an industrial one. Passaic County’s mixed crystalline and sedimentary bedrock geology is associated with naturally occurring arsenic in groundwater throughout the county’s less-developed areas. The same geological zone that drives higher radon levels in northern New Jersey’s bedrock counties also influences arsenic concentrations in private well water throughout Passaic County. The bedrock underlying portions of Clifton and the surrounding area has produced documented arsenic in private well monitoring, and individual well concentrations vary enough that the only useful data point is a test of the specific well in question. Nearby Paterson, Passaic, Nutley, and Bloomfield share the same Passaic County geological profile.
Why Municipal Customers and Private Well Owners Face Different Realities
The majority of Clifton homes draw from the Passaic Valley Water Commission’s municipal supply — treated water that meets federal arsenic standards before reaching distribution. Municipal customers have the protection of a regulated system with mandatory testing and public annual reporting. Private well owners in Clifton and the surrounding area have none of these protections. No regulatory requirement mandates arsenic testing on private wells. No government program tests those wells on the homeowner’s behalf. Whatever geology deposits in the groundwater arrives at the private well tap unchanged, and the responsibility for knowing that concentration and acting on it belongs entirely to the homeowner.
The Chronic Health Risk That Arrives Without Warning
Arsenic in drinking water does not signal its presence through taste, smell, or visual change. It accumulates in the body through long-term exposure — years of drinking and cooking with arsenic-containing water — and its health effects emerge from that accumulation, not from any single exposure event. 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 effects and neurological impacts. For children and during pregnancy, the developmental considerations are particularly relevant. A household can draw from an arsenic-containing well for years with no symptom that would connect their health concerns to the water. Testing is the only way to interrupt that exposure with actual data.
Arsenic Risk by Scenario — Clifton 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 |
| Clifton 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 and What Comes Next
Arsenic testing requires a water sample collected at the tap and submitted to a certified laboratory for specific arsenic analysis — it must be explicitly requested and is not part of any standard water quality panel. Our professional water testing page covers what a comprehensive assessment includes. If arsenic is found at levels warranting action, our arsenic removal page covers treatment options. For the broader water quality picture in Clifton, our Clifton water testing page covers local concerns. Our full New Jersey service area covers communities statewide.
Frequently Asked Questions — Arsenic in Drinking Water in Clifton, 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 in Passaic County draw from an aquifer environment where naturally occurring arsenic is present at concentrations higher than in South Jersey’s sedimentary geology areas. A test of a specific well gives you the only meaningful data for that well.
Is arsenic separate from the PFAS concern in Clifton’s water?
Yes — entirely separate concerns. PFAS in Clifton’s water comes from industrial discharge into the Passaic River watershed. Arsenic in private well water comes from the geological formations the groundwater moves through. Different sources, different chemistry, different health implications, different tests. A comprehensive water quality assessment should address both.
Can I tell if my water has arsenic without testing?
No. Arsenic at health-relevant concentrations has no taste, no smell, and no visual indicator. Laboratory testing specifically ordered for arsenic is the only way to detect it.
Is arsenic included in a standard water quality test?
No. It must be explicitly requested as a separate laboratory analysis. Standard panels covering bacteria, hardness, PFAS, and other contaminants do not include arsenic unless specifically ordered.
How quickly can I arrange testing?
We typically schedule within a few days. Sample collection takes under an hour at your home, and results return within one to two weeks.
Find Out Whether Arsenic Is in Your Clifton Home’s Water
If you’re on a private well in Passaic County and haven’t specifically tested for arsenic — this is a straightforward question that deserves a direct answer. We serve Clifton and all of Passaic County. Call us at (732) 357-1988 or reach out online.
