Ottawa County, OK

ZIP 74343

In ZIP 74343, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Ottawa Co Rwd #7 meets every EPA legal limit; 3 contaminants are above health goals, led by bromoform at 1.2× California’s Public Health Goal.
• Nearest Superfund site: Tar Creek (ottawa County), 7.1 miles away.
• Largest share of modeled toxic air from industry: Owens Corning Insulating Systems LLC (49%), mostly formaldehyde.
• 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 74343

• Superfund sites nearbyF
• Factories and industrial sitesA
• Oil and gas wellsA
• Parks and nature nearbyC to D
• Air qualityB to C
• Drinking water qualityA to C
• Pesticide useF
• Neighborhood health statusF
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA to D
• Radiation signalsB

Based on 2 census tracts · compiled October 25, 2026 · how each grade works and its sources

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