Waste Water Treatment Facility 1200 Holz Pkwy Mukwonago, WI 53149 Phone : (262) 363-6416 Business Category Regulation & Admin Of Communications Electric Gas & Other Utilities Mukwonago--wastewater Treatment Facility Mukwonago, WI 53149 Phone : (262) 363-6416 Business Category Government Offices-City Village & Twp Government Offices State & Local Government Offices & Public Schools