San Juan County, NM

ZIP 87418

In ZIP 87418, 4 of the 12 things we check have at least one part graded D or F.

• Drinking water: Northstar Mdwca meets every EPA legal limit; 1 contaminant is above health goals, led by lithium at 5.8× 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: San Juan Generating Station (50%), mostly chromium compounds.
• Fine particles (PM2.5) average 4.5 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 225,195 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 87418

• Superfund sites nearbyA
• Factories and industrial sitesA
• Oil and gas wellsD
• Parks and nature nearbyA
• Air qualityA
• Drinking water qualityC
• Pesticide useD
• Neighborhood health statusD to F
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA
• Radiation signalsF

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

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