70 ILCS 2305/7.3

Any district formed hereunder shall have the right to require that any sewer system, sewage treatment works or sewage treatment facility constructed in or within 3 miles of the limits of such district which is tributary thereto and not within the limits of any other sanitary district be constructed in accordance with the accepted standards and specifications of such district and shall further have the authority to cause inspection of the construction of such sewer system, sewage treatment works or sewage treatment facility to be made to ascertain that it comply with the standards and specifications of such sanitary district.