(225 ILCS 320/6) (from Ch. 111, par. 1105)
    Sec. 6. No municipal corporation or political subdivision shall engage in plumbing unless such plumbing is performed by one or more licensed plumbers, or licensed apprentice plumbers under supervision in accordance with this Act, provided that any such governmental unit may contract for plumbing with any person authorized to engage in plumbing in this State.
(Source: P.A. 83-878.)