Columbia County, PA

ZIP 18631

In ZIP 18631, 4 of the 12 things we check have at least one part graded D or F.

• Drinking water: Pa American Water Berwick has 1 contaminant at or over an EPA legal limit; 13 contaminants are above health goals, led by pfos at 3.3× California’s Public Health Goal.
• Nearest Superfund site: Safety Light Corporation, 3.6 miles away.
• Largest share of modeled toxic air from industry: Kawneer Co Inc (71%), mostly diisocyanates.
• Fine particles (PM2.5) average 7.1 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 78,024 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 18631

• Superfund sites nearbyD
• Factories and industrial sitesA
• Oil and gas wellsA
• Parks and nature nearbyC
• Air qualityB
• Drinking water qualityD to F
• Pesticide useF
• Neighborhood health statusC
• Past wildfire impactsA
• Past flood impactsC
• Noise levelsB
• Radiation signalsD

Based on 1 census tract · compiled September 10, 2026 · how each grade works and its sources

Loading the full report, with every source…