Wisconsin Department of Natural Resources

EM/DG - dual aquifer

Summary: Area of the state where there is an aquifer above and below the Maquoketa Formation. Well drillers constructing a well in this location must abide by certain requirements per Wis. Admin. Code ch. NR 812.
Source: Wisconsin DNR, Drinking Water and Groundwater Program
Date: Continuously Updated
For more information: Technical Documentation