La Plata County, CO

ZIP 81122

In ZIP 81122, 7 of the 12 things we check have at least one part graded D or F.

• Drinking water: Los Ranchitos Hoa meets every EPA legal limit; 9 contaminants are above health goals, led by arsenic at 250× 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: Harvest Four Corners (100%), mostly benzene.
• Fine particles (PM2.5) average 3.8 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 21,580 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 81122

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

Based on 5 census tracts · compiled September 10, 2026 · how each grade works and its sources

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