New Castle County, DE

ZIP 19801

In ZIP 19801, 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: Halby Chemical Co., 1.0 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Croda Inc (96%), mostly ethylene oxide.
• Fine particles (PM2.5) average 8.8 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 19801

• Superfund sites nearbyF
• Factories and industrial sitesF
• Oil and gas wellsA
• Parks and nature nearbyD to F
• Air qualityC to F
• Drinking water qualityF
• Pesticide useC to D
• Neighborhood health statusB to F
• Past wildfire impactsA
• Past flood impactsC
• Noise levelsB to D
• Radiation signalsB to C

Based on 11 census tracts · compiled September 10, 2026 · how each grade works and its sources

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