Home hazard report for 21921 — Elkton, MD
ZIP 21921 is served by Town of Elkton: 2 violations since 2016, latest lead result 0 ppb, PFAS 23.3 ppt. Cecil County is in EPA radon zone 2.
Health-based violations since 2016: Long Term 2 Enhanced Surface Water Treatment Rule. All are listed as resolved.
90th-percentile lead in the latest round (Jan 2022). 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. 8 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.
Active weather alerts
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Where ZIP 21921 is
Dashed: ZIP area · blue: utility service area · scroll or pinch to zoomDrinking water: Town of Elkton
Health-based violations
| Contaminant or rule | Health-based violations since 2016 |
|---|---|
| Long Term 2 Enhanced Surface Water Treatment Rule | 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 Dec 2025.
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 |
|---|---|---|---|
| PFOA | 23.3 ppt | 8 of 11 | 4 ppt MCL |
| PFPeA | 14.4 ppt | 9 of 11 | — |
| PFHxA | 12.8 ppt | 9 of 11 | — |
| PFBS | 12.3 ppt | 6 of 11 | — |
| PFBA | 8.6 ppt | 6 of 11 | — |
| PFOS | 7.1 ppt | 4 of 11 | 4 ppt MCL |
| PFHpA | 6.5 ppt | 5 of 11 | — |
| PFHxS | 4.4 ppt | 3 of 11 | — |
| PFNA | not detected | 0 of 11 | — |
| PFDA | not detected | 0 of 11 | — |
| HFPO-DA (GenX) | not detected | 0 of 11 | — |
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 Cecil 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 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 |
|---|---|---|
| Dwyer Property Ground Water Plume Elkton, Maryland · EPA ID MDD985366756 | Active (final NPL) | 1.3 mi |
| Sand, Gravel and Stone Elkton, Maryland · EPA ID MDD980705164 | Active (final NPL) | 2.1 mi |
| Ordnance Products, Inc. Cecil County, Maryland · EPA ID MDD982364341 | Active (final NPL) | 3.4 mi |
| Spectron, Inc. Elkton, Maryland · EPA ID MDD000218008 | Active (final NPL) | 4.5 mi |
| Harvey & Knott Drum, Inc. Kirkwood, Delaware · EPA ID DED980713093 | Active (final NPL) | 6.0 mi |
| Newark South Ground Water Plume Newark, Delaware · EPA ID DEN000306877 | Active (final NPL) | 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 21921
Who supplies drinking water to ZIP 21921?
Town of Elkton (EPA ID MD0070011), a surface water (rivers, lakes) system serving about 15,625 people.
Is there lead in Elkton, MD tap water?
The utility’s latest 90th-percentile lead result (Jan 2022) 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 Elkton, MD 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. 8 PFAS compounds detected.
Has the water system in 21921 had violations?
Health-based violations since 2016: Long Term 2 Enhanced Surface Water Treatment Rule. All are listed as resolved.
What natural hazards affect ZIP 21921?
FEMA’s National Risk Index rates the overall natural-hazard risk here as Relatively Low; the highest-rated hazards are strong wind (relatively high), winter weather (relatively high), coastal flooding (relatively moderate).
Are there Superfund sites near 21921?
Active or proposed Superfund (National Priorities List) sites near the center of this ZIP code. Sites within 10 miles: Dwyer Property Ground Water Plume (1.3 mi, Active (final NPL)); Sand, Gravel and Stone (2.1 mi, Active (final NPL)); Ordnance Products, Inc. (3.4 mi, Active (final NPL)).
Is radon a problem in Cecil County?
Cecil 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.