La Plata County, CO

ZIP 81301

In ZIP 81301, 6 of the 12 things we check have at least one part graded D or F.

• Drinking water: Twilight Wc meets every EPA legal limit; 6 contaminants are above health goals, led by bromodichloromethane at 118× California’s Public Health Goal.
• Nearest Superfund site: Bonita Peak Mining District, 7.5 miles away.
• Fine particles (PM2.5) average 3.8 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 378 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 81301

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

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

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