Hamilton County, TX

ZIP 76538

In ZIP 76538, 2 of the 12 things we check have at least one part graded D or F.

• Drinking water: Elm Creek Wsc meets every EPA legal limit; 10 contaminants are above health goals, led by lithium at 3.5× the USGS health-based screening level.
• 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: Oil States Industries - Lampasas (51%), mostly xylene (mixed isomers).
• Fine particles (PM2.5) average 6.8 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 37,826 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 76538

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

Based on 4 census tracts · compiled October 25, 2026 · how each grade works and its sources

Loading the full report, with every source…