Mifflin County, PA

ZIP 17841

In ZIP 17841, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Spring Twp Municipal Authority meets every EPA legal limit; 7 contaminants are above health goals, led by lead at 14× California’s Public Health Goal.
• Nearest Superfund site: Jacks Creek/sitkin Smelting & Refining, Inc., 5.0 miles away.
• Largest share of modeled toxic air from industry: Croda Inc (74%), mostly ethylene oxide.
• Fine particles (PM2.5) average 7.0 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 66,709 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 17841

• Superfund sites nearbyA to D
• Factories and industrial sitesB
• Oil and gas wellsA
• Parks and nature nearbyC
• Air qualityB
• Drinking water qualityC to D
• Pesticide useF
• Neighborhood health statusD to F
• Past wildfire impactsA
• Past flood impactsB
• Noise levelsA
• Radiation signalsD

Based on 2 census tracts · compiled September 10, 2026 · how each grade works and its sources

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