Ottawa County, OK

ZIP 74331

In ZIP 74331, 8 of the 12 things we check have at least one part graded D or F.

• Drinking water: Miami meets every EPA legal limit; 11 contaminants are above health goals, led by lead at 57× California’s Public Health Goal.
• Nearest Superfund site: Tar Creek (ottawa County), 7.1 miles away.
• Largest share of modeled toxic air from industry: Neofab LLC (53%), mostly nickel.
• Fine particles (PM2.5) average 7.3 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 72,563 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 74331

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

Based on 8 census tracts · compiled September 10, 2026 · how each grade works and its sources

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