415 ILCS 10/6

In accordance with the provisions set forth in Section 11-19-7 of the Illinois Municipal Code and Section 5-1047 of the Counties Code, units of local government may provide by ordinance, license, contract or other means that the methods of disposal of solid waste shall be the exclusive methods of disposal to be allowed within their respective jurisdictions, notwithstanding the fact that competition may be displaced or that such ordinance, license, contract or other measure may have an anti-competitive effect.