MMU office hours are from 8:00 am to 4:30 pm Monday through Friday.
Customers can visit us in person or use our convenient drive-up window
during these times. Our office is closed on Saturdays, Sundays, and all
major holidays. For EMERGENCY calls or
to report an outage, please call our Operations Center at (507) 537-7005 24 hours a day 7 days a