Madison County, ID

ZIP 83460

In ZIP 83460, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Rexburg City Of has 1 contaminant at or over an EPA legal limit; 6 contaminants are above health goals, led by di(2-ethylhexyl) phthalate at 201,667× 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: Frazier Industrial Co (93%), mostly 1,2,4-trimethylbenzene.
• Fine particles (PM2.5) average 6.2 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 1,323,043 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 83460

• Superfund sites nearbyA
• Factories and industrial sitesA
• Oil and gas wellsA
• Parks and nature nearbyD
• Air qualityA
• Drinking water qualityF
• Pesticide useF
• Neighborhood health statusB
• Past wildfire impactsD
• Past flood impactsA
• Noise levelsA to C
• Radiation signalsD

Based on 2 census tracts · compiled September 10, 2026 · how each grade works and its sources

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