Grayson County, TX

ZIP 75495

In ZIP 75495, 3 of the 12 things we check have at least one part graded D or F.

• Drinking water: Hickory Creek Sud meets every EPA legal limit; 8 contaminants are above health goals, led by lithium at 3× the USGS health-based screening level.
• Closer to Superfund sites than 0% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: Denison Industries (60%), mostly diisocyanates.
• Fine particles (PM2.5) average 7.3 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 71,861 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 75495

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

Based on 5 census tracts · compiled October 25, 2026 · how each grade works and its sources

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