Omro Wastewater Treatment Plnt 720 Hawthorne Dr Omro, WI 54963 Phone : (920) 685-7025 Business Category Regulation & Admin Of Communications Electric Gas & Other Utilities Omro Sewer Department 700 Hawthorne Dr Omro, WI 54963 Phone : (920) 685-7025 Business Category Government Offices-City Village & Twp Legislative Bodies Omro City Of--wastewater Treatment Plant 405 Madison Ave Omro, WI 54963 Phone : (920) 685-7025 Business Category Government Offices-City Village & Twp Government Offices State & Local Regulation & Admin Of Communications Electric Gas & Other Utilities Government Offices & Public Schools