Dawson County, TX

ZIP 79377

In ZIP 79377, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Klondike Isd has 4 contaminants at or over an EPA legal limit; 13 contaminants are above health goals, led by arsenic at 5,480× 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: Alon Usa-Big Spring Refinery (64%), mostly benzene.
• Fine particles (PM2.5) average 5.4 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 365,165 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 79377

• Superfund sites nearbyA
• Factories and industrial sitesA
• Oil and gas wellsF
• Parks and nature nearbyD
• Air qualityA
• Drinking water qualityD to F
• Pesticide useF
• Neighborhood health statusD
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsB
• Radiation signalsB

Based on 1 census tract · compiled September 10, 2026 · how each grade works and its sources

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