Hennepin County, MN

ZIP 55345

In ZIP 55345, 7 of the 12 things we check have at least one part graded D or F.

• Drinking water: Chanhassen meets every EPA legal limit; 14 contaminants are above health goals, led by ethylbenzene at 2.2× European Union Drinking Water Directive.
• Nearest Superfund site: Reilly Tar & Chemical Corp. (st. Louis Park Plant), 5.9 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Emerson Automation Solutions Rosemount Inc (17%), mostly chromium.
• Fine particles (PM2.5) average 7.9 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 37,606 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 55345

• Superfund sites nearbyC to D
• Factories and industrial sitesD
• Oil and gas wellsA
• Parks and nature nearbyD to F
• Air qualityC to D
• Drinking water qualityC to F
• Pesticide useB to D
• Neighborhood health statusB
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA
• Radiation signalsC to D

Based on 7 census tracts · compiled September 10, 2026 · how each grade works and its sources

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