The Washtenaw County Sheriff Police and Fire Departments are dispatched by the Washtenaw County Sheriff's Office - 911 Metro Dispatch in Ann Arbor, Michigan, United ... See more States, providing a rapid response by fire, EMS and law enforcement departments to incidents and control of a wide-range of emergency situations, including City of Ann Arbor Police & Fire, Chelsea Police & Fire, City of Milan Police and Fire, Northfield Twp Police & Fire, Pittsfield Twp Police & Fire, City of Saline Police & Fire, Scio Twp Fire, City of Ypsilanti Police & Fire, Washtenaw County Sheriff Department and Washtenaw County Emergency Management.