Description: Degreasers and solvents from roundhouse and former chemical distribution center created this pollution plume.
Fridley ordnance plant plumes
Description: Two stable chemical plumes at a Navy munitions plant on the Mississippi River no longer threaten the Minneapolis water supply.
Blaine groundwater plume
Description: Industrial chemical from an unknown source affects groundwater beneath 1½ square miles. City treats water from affected wells.
East Bethel Landfill plume
Location: East Bethel
Pollutants: VOCs, other chemicals
Description: Groundwater near closed landfill is constantly extracted so the small pollution plume won't grow.
Army ammunition plant plume
Location: Arden Hills, New Brighton, Columbia Heights, Fridley, Mounds View, St. Anthony, Minneapolis
Description: Two suburbs must filter water from this 8-square-mile plume containing solvents from a former munitions plant in Arden Hills (1941-1975).
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