Dallas County, TX

ZIP 75042

In ZIP 75042, 3 of the 12 things we check have at least one part graded D or F.

• Drinking water: City Of Richardson meets every EPA legal limit; 9 contaminants are above health goals, led by bromodichloromethane at 204× California’s Public Health Goal.
• 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: General Dynamics Ordnance & Tactical Systems Garland (76%), mostly nickel.
• Fine particles (PM2.5) average 9.3 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 75042

• Superfund sites nearbyA
• Factories and industrial sitesF
• Oil and gas wellsA
• Parks and nature nearbyC
• Air qualityD to F
• Drinking water qualityC
• Pesticide useA to B
• Neighborhood health statusA to D
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA to C
• Radiation signalsB

Based on 13 census tracts · compiled October 25, 2026 · how each grade works and its sources

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