Penobscot County, ME

ZIP 04401

In ZIP 04401, 6 of the 12 things we check have at least one part graded D or F.

• Drinking water: Hampden Water District meets every EPA legal limit; 4 contaminants are above health goals, led by bromodichloromethane at 78× California’s Public Health Goal.
• Closer to Superfund sites than 0% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: Ge Energy (56%), mostly chromium.
• Fine particles (PM2.5) average 4.5 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 49,725 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 04401

• Superfund sites nearbyA
• Factories and industrial sitesA to D
• Oil and gas wellsA
• Parks and nature nearbyB to D
• Air qualityA
• Drinking water qualityA to D
• Pesticide useC to D
• Neighborhood health statusC to F
• Past wildfire impactsA
• Past flood impactsC
• Noise levelsA to D
• Radiation signalsB to C

Based on 11 census tracts · compiled October 25, 2026 · how each grade works and its sources

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