Dallas County, TX

ZIP 75231

In ZIP 75231, 6 of the 12 things we check have at least one part graded D or F.

• Drinking water: City Of University Park has 2 contaminants at or over an EPA legal limit; 13 contaminants are above health goals, led by pfos at 4.3× California’s Public Health Goal.
• Nearest Superfund site: Rsr Corporation, 9.6 miles away.
• Largest share of modeled toxic air from industry: Sterigenics US Llc-Grand Prairie Texas Facility (23%), mostly ethylene oxide.
• Fine particles (PM2.5) average 8.8 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 19,079 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 75231

• Superfund sites nearbyA to C
• Factories and industrial sitesD
• Oil and gas wellsA
• Parks and nature nearbyC to F
• Air qualityD to F
• Drinking water qualityF
• Pesticide useB to C
• Neighborhood health statusA to D
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA to D
• Radiation signalsC

Based on 18 census tracts · compiled September 10, 2026 · how each grade works and its sources

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