Crawford County, KS

ZIP 66743

In ZIP 66743, 7 of the 12 things we check have at least one part graded D or F.

• Drinking water: Frontenac, City Of has 1 contaminant at or over an EPA legal limit; 9 contaminants are above health goals, led by lithium at 12× the USGS health-based screening level.
• Closer to Superfund sites than 57% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: Tank Connection LLC (69%), mostly chromium.
• Fine particles (PM2.5) average 6.9 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 137,947 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 66743

• Superfund sites nearbyA to C
• Factories and industrial sitesB to D
• Oil and gas wellsD to F
• Parks and nature nearbyC to D
• Air qualityB
• Drinking water qualityA to D
• Pesticide useF
• Neighborhood health statusC to F
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA
• Radiation signalsD

Based on 4 census tracts · compiled October 25, 2026 · how each grade works and its sources

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