Wis. Admin. Code Department of Agriculture, Trade and Consumer Protection ATCP 60.08
Paragraph (b) does not limit the use of heat exchanger discharge water for nonpotable uses involving no contact with potable water, milk, milk contact surfaces, or potable water contact surfaces. Before using or discharging heat exchanger discharge water, contact the Division of Water, Bureau of Drinking Water and Ground Water, at the Department of Natural Resources, P.O. Box 7921, Madison, WI 53707, telephone 608-266-0821 or TTY access via relay - 711 or http://www.dnr.state.wi.us/environmentprotect/water.html [File Link Not Available].