Home hazard report for 10918 — Chester, NY
ZIP 10918 is served by Chester Village: 2 violations since 2016, latest lead result 12 ppb, PFAS 5.1 ppt. Orange County is in EPA radon zone 1.
Health-based violations since 2016: Tthm. All are listed as resolved.
Below the current 15 ppb action level but above 10 ppb, the action level under EPA's Lead and Copper Rule Improvements (compliance from 2027). Latest round: Jan 2021.
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. 4 PFAS compounds detected.
Predicted average indoor radon above 4 pCi/L — EPA’s action level. Test your home.
FEMA’s overall natural-hazard risk for this census tract, relative to the rest of the U.S.
The nearest active Superfund site is 8.3 miles away.
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Where ZIP 10918 is
Dashed: ZIP area · blue: utility service area · scroll or pinch to zoomDrinking water: Chester Village
Health-based violations
| Contaminant or rule | Health-based violations since 2016 |
|---|---|
| Tthm | 2 |
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 Apr 2019.
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 |
|---|---|---|---|
| PFBA | 18.9 ppt | 1 of 6 | — |
| PFOA | 5.1 ppt | 4 of 6 | 4 ppt MCL |
| PFPeA | 4.9 ppt | 4 of 6 | — |
| PFHxA | 3.6 ppt | 4 of 6 | — |
| HFPO-DA (GenX) | not detected | 0 of 6 | — |
| PFNA | not detected | 0 of 6 | — |
| PFHxS | not detected | 0 of 6 | — |
| PFBS | not detected | 0 of 6 | — |
| PFDA | not detected | 0 of 6 | — |
| PFOS | not detected | 0 of 6 | 4 ppt MCL |
| PFHpA | not detected | 0 of 6 | — |
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 Orange County
EPA radon zone 1 — highest potential. Predicted average indoor radon above 4 pCi/L — EPA’s action level. Test your home.
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 moderate 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 |
|---|---|---|
| Warwick Landfill Warwick, New York · EPA ID NYD980506679 | Cleaned up & deleted | 7.3 mi |
| Nepera Chemical Co., Inc. Maybrook, New York · EPA ID NYD000511451 | Active (final NPL) | 8.3 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 10918
Who supplies drinking water to ZIP 10918?
Chester Village (EPA ID NY3503524), a surface water (rivers, lakes) system serving about 3,448 people.
Is there lead in Chester, NY tap water?
The utility’s latest 90th-percentile lead result (Jan 2021) was 12 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 Chester, NY 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. 4 PFAS compounds detected.
Has the water system in 10918 had violations?
Health-based violations since 2016: Tthm. All are listed as resolved.
What natural hazards affect ZIP 10918?
FEMA’s National Risk Index rates the overall natural-hazard risk here as Relatively Low; the highest-rated hazards are cold wave (relatively moderate), lightning (relatively moderate), riverine flooding (relatively moderate).
Are there Superfund sites near 10918?
The nearest active Superfund site is 8.3 miles away. Sites within 10 miles: Warwick Landfill (7.3 mi, Cleaned up & deleted); Nepera Chemical Co., Inc. (8.3 mi, Active (final NPL)).
Is radon a problem in Orange County?
Orange County is in EPA radon zone 1 (highest potential). Predicted average indoor radon above 4 pCi/L — EPA’s action level. Test your home.