Harrison County, TX

ZIP 75670

In ZIP 75670, 6 of the 12 things we check have at least one part graded D or F.

• Drinking water: Diana Sud meets every EPA legal limit; 9 contaminants are above health goals, led by bromodichloromethane at 131× California’s Public Health Goal.
• Closer to Superfund sites than 64% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: Eastman Chemical Co Texas Operations (61%), mostly ethylene oxide.
• Fine particles (PM2.5) average 7.3 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 13,773 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 75670

• Superfund sites nearbyA to D
• Factories and industrial sitesC to F
• Oil and gas wellsD
• Parks and nature nearbyB to C
• Air qualityC
• Drinking water qualityB to C
• Pesticide useC to D
• Neighborhood health statusD to F
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA to D
• Radiation signalsA to B

Based on 10 census tracts · compiled October 25, 2026 · how each grade works and its sources

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