Kennebec County, ME

ZIP 04346

In ZIP 04346, 3 of the 12 things we check have at least one part graded D or F.

• Drinking water: Gardiner Water District meets every EPA legal limit; 9 contaminants are above health goals, led by arsenic at 224× California’s Public Health Goal.
• Nearest Superfund site: O'connor Co., 7.3 miles away.
• Largest share of modeled toxic air from industry: Pioneer Plastics Corp (66%), mostly formaldehyde.
• Fine particles (PM2.5) average 4.7 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 22,401 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 04346

• Superfund sites nearbyA
• Factories and industrial sitesA
• Oil and gas wellsA
• Parks and nature nearbyC
• Air qualityA
• Drinking water qualityB to D
• Pesticide useD
• Neighborhood health statusD
• 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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