Cumberland County, ME

ZIP 04103

In ZIP 04103, 7 of the 12 things we check have at least one part graded D or F.

• Drinking water: Portland Water District-Greater has 1 contaminant at or over an EPA legal limit; 6 contaminants are above health goals, led by uranium at 233× California’s Public Health Goal.
• Nearest Superfund site: Keddy Mill, 6.0 miles away.
• Largest share of modeled toxic air from industry: Valmet Inc (25%), mostly benzene.
• Fine particles (PM2.5) average 5.7 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 9,458 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 04103

• Superfund sites nearbyA to C
• Factories and industrial sitesC to D
• Oil and gas wellsA
• Parks and nature nearbyD to F
• Air qualityA
• Drinking water qualityD
• Pesticide useB to D
• Neighborhood health statusB to D
• Past wildfire impactsA
• Past flood impactsC
• Noise levelsA to D
• Radiation signalsD

Based on 9 census tracts · compiled September 10, 2026 · how each grade works and its sources

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