Doña Ana County, NM

ZIP 88046

In ZIP 88046, 3 of the 12 things we check have at least one part graded D or F.

• Drinking water: Mesilla Water System meets every EPA legal limit; 11 contaminants are above health goals, led by arsenic at 332× California’s Public Health Goal.
• Nearest Superfund site: Griggs & Walnut Ground Water Plume, 4.2 miles away.
• Largest share of modeled toxic air from industry: Sterigenics-Santa Teresa Facility (100%), mostly ethylene oxide.
• Fine particles (PM2.5) average 6.3 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 228,916 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 88046

• Superfund sites nearbyD
• Factories and industrial sitesA
• Oil and gas wellsA
• Parks and nature nearbyC
• Air qualityA
• Drinking water qualityC
• Pesticide useF
• Neighborhood health statusD
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsB
• Radiation signalsC

Based on 1 census tract · compiled October 25, 2026 · how each grade works and its sources

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