Davis County, UT

ZIP 84025

In ZIP 84025, 7 of the 12 things we check have at least one part graded D or F.

• Drinking water: Layton City Water System meets every EPA legal limit; 14 contaminants are above health goals, led by di(2-ethylhexyl) phthalate at 30× California’s Public Health Goal.
• Nearest Superfund site: Bountiful/woods Cross 5th S. PCE Plume, 3.2 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Kennecott Utah Copper Smelter & Refinery (45%), mostly arsenic compounds.
• Fine particles (PM2.5) average 7.5 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 15,863 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 84025

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

Based on 8 census tracts · compiled September 10, 2026 · how each grade works and its sources

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