Penobscot County, ME

ZIP 04434

In ZIP 04434, 4 of the 12 things we check have at least one part graded D or F.

• Drinking water: Grandeur Mobile Home Estates meets every EPA legal limit; 5 contaminants are above health goals, led by arsenic at 817× California’s Public Health Goal.
• Nearest Superfund site: West Site/hows Corners, 5.5 miles away.
• Largest share of modeled toxic air from industry: Sappi N.A. Inc. - Somerset Operations (76%), 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 04434

• Superfund sites nearbyC to D
• Factories and industrial sitesA to B
• Oil and gas wellsA
• Parks and nature nearbyC
• Air qualityA
• Drinking water qualityC to D
• Pesticide useD
• Neighborhood health statusD to F
• Past wildfire impactsA
• Past flood impactsC
• Noise levelsA
• Radiation signalsC

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

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