Brazoria County, TX

ZIP 77422

In ZIP 77422, 4 of the 12 things we check have at least one part graded D or F.

• Drinking water: River Run Water System meets every EPA legal limit; 6 contaminants are above health goals, led by arsenic at 700× California’s Public Health Goal.
• Closer to Superfund sites than 53% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: Freeport_Olin Bc (36%), 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 126,183 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 77422

• Superfund sites nearbyA to C
• Factories and industrial sitesD to F
• Oil and gas wellsD
• Parks and nature nearbyC
• Air qualityB to C
• Drinking water qualityA to C
• Pesticide useC to D
• Neighborhood health statusD to F
• Past wildfire impactsA
• Past flood impactsC
• Noise levelsA
• Radiation signalsB

Based on 6 census tracts · compiled October 25, 2026 · how each grade works and its sources

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