Penobscot County, ME

ZIP 04928

In ZIP 04928, 4 of the 12 things we check have at least one part graded D or F.

• Drinking water: Corinna Water District meets every EPA legal limit; 9 contaminants are above health goals, led by arsenic at 700× California’s Public Health Goal.
• Nearest Superfund site: Eastland Woolen Mill, 3.2 miles away.
• Largest share of modeled toxic air from industry: Sappi N.A. Inc. - Somerset Operations (99%), mostly formaldehyde.
• Fine particles (PM2.5) average 4.8 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 04928

• Superfund sites nearbyF
• Factories and industrial sitesA
• Oil and gas wellsA
• Parks and nature nearbyC
• Air qualityA
• Drinking water qualityD
• Pesticide useD
• Neighborhood health statusF
• Past wildfire impactsA
• Past flood impactsC
• Noise levelsA
• Radiation signalsC

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

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