Mifflin County, PA

ZIP 17841

In ZIP 17841, 4 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; 6 contaminants are above health goals, led by chloroform at 87× 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 sitesA
• Oil and gas wellsA
• Parks and nature nearbyB to C
• Air qualityB
• Drinking water qualityA to C
• Pesticide useF
• Neighborhood health statusF
• Past wildfire impactsA
• Past flood impactsB
• Noise levelsA
• Radiation signalsF

Based on 2 census tracts · compiled October 25, 2026 · how each grade works and its sources

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