65 ILCS 5/11-6-1.1
A municipality may choose to provide firefighting services to property outside its corporate limits. The corporate authorities of each municipality may fix, charge, and collect firefighting service fees not exceeding the actual cost of the service for all firefighting services rendered by the municipality against persons, businesses, and other entities that are not residents of the municipality. An additional charge may be levied to reimburse the municipality for extraordinary expenses of materials used in rendering the services. Nothing in this Section shall impact any agreement entered into by a municipality and persons, businesses, and other entities that are not residents of the municipality. Nothing in this Section shall require a municipality to supply any firefighting services to property located outside the corporate limits of the municipality.
65 ILCS 5/11-6-1.1