Decatur Audubon Society A local National Audubon Society chapter includes outdoor enthusiasts of all ages. This group meets once a month.

Environmental Affairs Council of Millikin University: This student run group organizes a variety of activities, including "Take it or Leave It" end of the semester recycling events, river cleanups, street cleanups, and speakers. (see Facebook page)

Illinois Environmental Organizations: A statewide list of environmental organizations. 

Macon County Community Environmental Council: Community members that are interested in promoting conservation, preservation, restoration and environmental awareness in Macon County. This group has quarterly meetings and numerous activities throughout the year. (see Facebook page)