Versions of Illinois Compiled Statutes 5 ILCS 420/1-121 - Public utility on LawServer 2023 Illinois Compiled Statutes 5 ILCS 420/1-121 – Public utility 2022 Illinois Compiled Statutes 5 ILCS 420/1-121 – Public utility 2021 Illinois Compiled Statutes 5 ILCS 420/1-121 – Public utility