Brazoria County, TX

ZIP 77584

In ZIP 77584, 8 of the 12 things we check have at least one part graded D or F.

• Drinking water: Sedona Lakes Mud 1 meets every EPA legal limit; 8 contaminants are above health goals, led by lead at 34× California’s Public Health Goal.
• Nearest Superfund site: Sol Lynn/industrial Transformers, 9.5 miles away.
• Largest share of modeled toxic air from industry: Nouryon Surface Chemistry LLC (35%), mostly ethylene oxide.
• Fine particles (PM2.5) average 9.2 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 77584

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

Based on 23 census tracts · compiled September 10, 2026 · how each grade works and its sources

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