Brazos County, TX

ZIP 77840

In ZIP 77840, 6 of the 12 things we check have at least one part graded D or F.

• Drinking water: Texas A&m University Main Campus meets every EPA legal limit; 8 contaminants are above health goals, led by dibromochloromethane at 157× 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: Grant Prideco (88%), mostly chromium.
• Fine particles (PM2.5) average 8.4 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 85,241 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 77840

• Superfund sites nearbyA
• Factories and industrial sitesB to F
• Oil and gas wellsD to F
• Parks and nature nearbyC to D
• Air qualityC to D
• Drinking water qualityC
• Pesticide useC to F
• Neighborhood health statusA to C
• Past wildfire impactsA
• Past flood impactsB
• Noise levelsA to D
• Radiation signalsB to C

Based on 19 census tracts · compiled October 25, 2026 · how each grade works and its sources

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