Ottawa County, OK

ZIP 74354

In ZIP 74354, 7 of the 12 things we check have at least one part graded D or F.

• Drinking water: Welch Pwa has 1 contaminant at or over an EPA legal limit; 8 contaminants are above health goals, led by dibromochloromethane at 14× California’s Public Health Goal.
• Nearest Superfund site: Tar Creek (ottawa County), 6.6 miles away.
• Largest share of modeled toxic air from industry: Owens Corning Insulating Systems LLC (47%), 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 74354

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

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

Loading the full report, with every source…