Llano County, TX

ZIP 76831

In ZIP 76831, 3 of the 12 things we check have at least one part graded D or F.

• Drinking water: Deer Country Wsc has 1 contaminant at or over an EPA legal limit; 10 contaminants are above health goals, led by dibromochloromethane at 53× 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: Entegris Inc (93%), mostly catechol.
• Fine particles (PM2.5) average 6.7 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 7,674 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 76831

• Superfund sites nearbyA
• Factories and industrial sitesA
• Oil and gas wellsA
• Parks and nature nearbyB to C
• Air qualityA to B
• Drinking water qualityB to D
• Pesticide useD
• Neighborhood health statusD to F
• Past wildfire impactsA
• Past flood impactsC
• Noise levelsA
• Radiation signalsB to C

Based on 2 census tracts · compiled October 25, 2026 · how each grade works and its sources

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