Emergency Police Services (EPS) program provides support to law enforcement in times of crisis. The program coordinates law enforcement response to emergencies, including coordination of mutual aid for law enforcement assistance in natural disasters, prison disturbances and other emergencies. Wisconsin Police Services consists of a director and deputy director at the state level. The administrator of Wisconsin Emergency Management (WEM), who is appointed by the Governor, also serves as EPS Director. The EPS Deputy Director is a civil service position with a background in law enforcement.

EPS is divided into seven areas (EPS Map). Every four years, law enforcement officials in each of the areas elect a sheriff as an area director. Upon election, the area director appoints two deputies - one a sheriff and the other a police chief. In a crisis situation that overwhelms any of their individual resources, the area director and state director are called upon to set up a mutual aid response that can help resolve the incident. The initiating county sheriff maintains the authority over the situation and the response is to augment their forces with law enforcement officers from surrounding areas.

A recent example of where EPS mutual aid was used was coordinating additional officers to help provide traffic control and other assistance was in Eau Claire County for a significant chemical plant fire June 22, 2007, Wood County for lost child June 14, 2007, and Sheboygan County for the US Senior Open for the week long event of July 01-08, 2007.  Plans are in the works to support the EAA in Winnebago County, Waupaca County for the Iola Auto Show and Farm Technology Days in Green County as other examples of resource services provided.  A few historical events to be noted were in Ladysmith-Rusk County for seven days following the F3 tornado in September 2002, Burnett County for the Siren tornado in 2001 and Waupaca County for the Weyauwega train derailment in 1996.