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Additional Information

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State and Local Links

Iowa Geological
and Water Survey

109 Trowbridge Hall
Iowa City, IA 52242
Phone (319) 335-1575
Fax (319) 335-2754

National Links

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USGS National Water-Quality Assessment (NAWQA) Program

USGS Toxic Substances Hydrology Program

USGS / IGS Pharmaceuticals in Iowa Streams