Home hazard report for 03603 — Charlestown, NH
ZIP 03603 is served by Charlestown Water Works: no health-based violations since 2016, latest lead result 19 ppb, PFAS not tested. Sullivan County is in EPA radon zone 2.
No health-based violations reported since 2016.
The 90th-percentile lead level in the latest round (Jan 2024) was above EPA's 15 ppb action level, which requires the utility to take further steps.
This system was not part of EPA’s 2023–2025 nationwide PFAS testing (UCMR 5 covers systems serving over 3,300 people and a sample of smaller ones).
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.
The nearest active Superfund site is 3.6 miles away.
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Where ZIP 03603 is
Dashed: ZIP area · blue: utility service area · scroll or pinch to zoomDrinking water: Charlestown Water Works
Health-based violations
No health-based violations reported since 2016.
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”)
This system was not part of EPA’s 2023–2025 nationwide PFAS testing (UCMR 5).
Radon in Sullivan 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 moderate 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 |
|---|---|---|
| BFI Sanitary Landfill (Rockingham) Rockingham, Vermont · EPA ID VTD980520092 | Active (final NPL) | 3.6 mi |
| Old Springfield Landfill Springfield, Vermont · EPA ID VTD000860239 | Active (final NPL) | 5.0 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 03603
Who supplies drinking water to ZIP 03603?
Charlestown Water Works (EPA ID NH0411010), a groundwater (wells) system serving about 2,850 people.
Is there lead in Charlestown, NH tap water?
The utility’s latest 90th-percentile lead result (Jan 2024) was 19 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 Charlestown, NH water have PFAS?
This system was not part of EPA’s 2023–2025 nationwide PFAS testing (UCMR 5 covers systems serving over 3,300 people and a sample of smaller ones).
Has the water system in 03603 had violations?
No health-based violations reported since 2016.
What natural hazards affect ZIP 03603?
FEMA’s National Risk Index rates the overall natural-hazard risk here as Relatively Low; the highest-rated hazards are lightning (relatively high), cold wave (relatively moderate), ice storm (relatively moderate).
Are there Superfund sites near 03603?
The nearest active Superfund site is 3.6 miles away. Sites within 10 miles: BFI Sanitary Landfill (Rockingham) (3.6 mi, Active (final NPL)); Old Springfield Landfill (5.0 mi, Active (final NPL)).
Is radon a problem in Sullivan County?
Sullivan 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.