Cumberland County, ME

ZIP 04103

In ZIP 04103, 4 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; 1 contaminant is above health goals, led by arsenic at 238× California’s Public Health Goal.
• Nearest Superfund site: Keddy Mill, 6.0 miles away.
• Largest share of modeled toxic air from industry: South Portland Terminal (Sptpm) (28%), 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 nearbyB to C
• Air qualityA
• Drinking water qualityF
• Pesticide useB to C
• Neighborhood health statusB to C
• Past wildfire impactsA
• Past flood impactsC
• Noise levelsA to D
• Radiation signalsF

Based on 9 census tracts · compiled October 25, 2026 · how each grade works and its sources

Loading the full report, with every source…