Home hazard report for 07042 — Montclair, NJ
ZIP 07042 is served by Montclair Water Bureau: 1 violation since 2016, latest lead result 0 ppb, PFAS 6.8 ppt. Essex County is in EPA radon zone 2.
Health-based violations since 2016: Lead and Copper Rule. All are listed as resolved.
90th-percentile lead in the latest round (Jan 2026). Lead comes mostly from household plumbing and service lines, so individual homes can be higher.
Highest PFOA or PFOS result in EPA’s 2023–2025 testing was at or above 4.0 ppt, EPA’s 2024 maximum contaminant level for each. 5 PFAS compounds detected.
Predicted average indoor radon between 2 and 4 pCi/L. Test your home; many homes here exceed 4 pCi/L.
FEMA’s overall natural-hazard risk for this census tract, relative to the rest of the U.S.
Active or proposed Superfund (National Priorities List) sites near the center of this ZIP code.
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Where ZIP 07042 is
Dashed: ZIP area · blue: utility service area · scroll or pinch to zoomDrinking water: Montclair Water Bureau
Health-based violations
| Contaminant or rule | Health-based violations since 2016 |
|---|---|
| Lead and Copper Rule | 1 |
A health-based violation means a contaminant exceeded its legal limit (MCL) or a required treatment technique was not met, as reported by the state to EPA’s SDWIS. All are listed as resolved or archived; the latest began Jan 2024.
Lead
90th-percentile lead per sampling round (90% of the homes sampled were at or below this level). Black line: EPA’s 15 ppb action level; under the Lead and Copper Rule Improvements the action level becomes 10 ppb from 2027.
PFAS (“forever chemicals”)
| Compound | Highest result | Samples with detection | EPA limit |
|---|---|---|---|
| PFPeA | 13 ppt | 3 of 8 | — |
| PFBA | 8.6 ppt | 3 of 8 | — |
| PFOA | 6.8 ppt | 2 of 8 | 4 ppt MCL |
| PFOS | 4 ppt | 1 of 8 | 4 ppt MCL |
| PFHxA | 3 ppt | 1 of 8 | — |
| PFHxS | not detected | 0 of 8 | — |
| HFPO-DA (GenX) | not detected | 0 of 8 | — |
| PFNA | not detected | 0 of 8 | — |
| PFHpA | not detected | 0 of 8 | — |
| PFBS | not detected | 0 of 8 | — |
| PFDA | not detected | 0 of 8 | — |
EPA Fifth Unregulated Contaminant Monitoring Rule (UCMR 5), samples 2023–2025; ppt = parts per trillion (ng/L). The 4.0 ppt maximum contaminant levels for PFOA and PFOS were set by EPA in 2024; water systems have until the end of the decade to comply.
Radon in Essex County
EPA radon zone 2 — moderate potential. Predicted average indoor radon between 2 and 4 pCi/L. Test your home; many homes here exceed 4 pCi/L.
Radon is a colorless, odorless radioactive gas from soil and rock, and the leading cause of lung cancer among non-smokers. EPA recommends fixing a home at 4 pCi/L or above and considering it from 2 pCi/L. A short-term test kit costs about $15–30. How radon zones work →
Natural hazard risk
FEMA rates the overall natural-hazard risk of this neighborhood (census tract) as Relatively Low, with relatively low social vulnerability and relatively low community resilience.
FEMA National Risk Index (December 2025): expected annual losses from each hazard combined with social vulnerability and community resilience, rated relative to all U.S. census tracts. Hazards not listed are not applicable here. It describes the area, not a single building; flood insurance maps (FEMA FIRMs) decide flood-insurance requirements.
Live conditions: river gauges and flood levels · tornado warnings · wildfire detections · earthquakes — our sister maps, updated from NOAA, USGS and NASA every few minutes.
Superfund sites nearby
| Site | Status | Distance |
|---|---|---|
| Montclair/West Orange Radium Site Montclair, West Orange, New Jersey · EPA ID NJD980785653 | Cleaned up & deleted | 1.5 mi |
| Glen Ridge Radium Site Glen Ridge, New Jersey · EPA ID NJD980785646 | Cleaned up & deleted | 1.8 mi |
| U.S. Radium Corp. Orange, New Jersey · EPA ID NJD980654172 | Active (final NPL) | 2.3 mi |
| Orange Valley Regional Ground Water Contamination West Orange/Orange, New Jersey · EPA ID NJD002148799 | Active (final NPL) | 2.3 mi |
| Riverside Industrial Park Newark, New Jersey · EPA ID NJSFN0204232 | Active (final NPL) | 4.6 mi |
| Caldwell Trucking Co. Fairfield, New Jersey · EPA ID NJD048798953 | Active (final NPL) | 5.1 mi |
| Unimatic Manufacturing Corporation Fairfield, New Jersey · EPA ID NJD002164796 | Active (final NPL) | 5.2 mi |
| Diamond Head Oil Refinery Div. Kearny, New Jersey · EPA ID NJD092226000 | Active (final NPL) | 6.5 mi |
| Diamond Alkali Co. Newark, New Jersey · EPA ID NJD980528996 | Active (final NPL) | 6.7 mi |
| Industrial Latex Corp. Wallington Borough, New Jersey · EPA ID NJD981178411 | Cleaned up & deleted | 6.9 mi |
EPA Superfund National Priorities List (NPL): the country’s most serious known hazardous-waste sites, each with an EPA cleanup record (linked). Distance is measured from the ZIP center to the site’s reference point; being near a site does not by itself mean exposure — EPA site pages describe what was found and how it is being cleaned up.
What this is — and isn’t. These are records your water utility and state reported to the EPA, and the EPA’s radon map for your county. They describe the system and the area, not the water from your own tap or the air in your home. For that, read your utility’s annual Consumer Confidence Report and test: lead and radon tests are inexpensive.
Questions about 07042
Who supplies drinking water to ZIP 07042?
Montclair Water Bureau (EPA ID NJ0713001), a surface water (rivers, lakes) system serving about 40,150 people.
Is there lead in Montclair, NJ tap water?
The utility’s latest 90th-percentile lead result (Jan 2026) was 0 ppb; EPA’s action level is 15 ppb, falling to 10 ppb from 2027. Lead mostly comes from service lines and home plumbing, so the only way to know your tap is to test it.
Does Montclair, NJ water have PFAS?
Highest PFOA or PFOS result in EPA’s 2023–2025 testing was at or above 4.0 ppt, EPA’s 2024 maximum contaminant level for each. 5 PFAS compounds detected.
Has the water system in 07042 had violations?
Health-based violations since 2016: Lead and Copper Rule. All are listed as resolved.
What natural hazards affect ZIP 07042?
FEMA’s National Risk Index rates the overall natural-hazard risk here as Relatively Low; the highest-rated hazards are heat wave (relatively moderate), riverine flooding (relatively moderate), winter weather (relatively moderate).
Are there Superfund sites near 07042?
Active or proposed Superfund (National Priorities List) sites near the center of this ZIP code. Sites within 10 miles: Montclair/West Orange Radium Site (1.5 mi, Cleaned up & deleted); Glen Ridge Radium Site (1.8 mi, Cleaned up & deleted); U.S. Radium Corp. (2.3 mi, Active (final NPL)).
Is radon a problem in Essex County?
Essex County is in EPA radon zone 2 (moderate potential). Predicted average indoor radon between 2 and 4 pCi/L. Test your home; many homes here exceed 4 pCi/L.