New Castle County, DE
ZIP 19805
In ZIP 19805, 8 of the 12 things we check have at least one part graded D or F.
- Drinking water: Wilmington Water Department has 1 contaminant at or over an EPA legal limit; 17 contaminants are above health goals, led by lead at 38× California’s Public Health Goal.
- Nearest Superfund site: E.i. Du Pont De Nemours & Co., Inc. (newport Pigment Plant Landfill), 1.5 miles away (3 within 10 miles).
- Largest share of modeled toxic air from industry: Croda Inc (87%), mostly ethylene oxide.
- Fine particles (PM2.5) average 8.3 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
- About 97,688 kg of agricultural pesticides are applied in the county each year.
Grades for ZIP 19805
- Superfund sites nearbyF
- Factories and industrial sitesD to F
- Oil and gas wellsA
- Parks and nature nearbyC to F
- Air qualityC to D
- Drinking water qualityF
- Pesticide useC to F
- Neighborhood health statusB to D
- Past wildfire impactsA
- Past flood impactsC
- Noise levelsA to D
- Radiation signalsB to C
Based on 16 census tracts · compiled September 10, 2026 · how each grade works and its sources
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