Ottawa County, OK

ZIP 74363

In ZIP 74363, 3 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), 8.4 miles away.
• Largest share of modeled toxic air from industry: Owens Corning Insulating Systems LLC (47%), mostly formaldehyde.
• Fine particles (PM2.5) average 7.0 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 74363

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

Based on 1 census tract · compiled October 25, 2026 · how each grade works and its sources

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