(a) The commissioners on the board of a municipal sewer improvement district shall have the right to consent to or refuse to allow connections within their discretion.
(b)
(1) The connections shall be made on such terms as the commissioners may dictate. However, no lands outside of the district shall be permitted to connect with the sewer line of the district except upon payment to the district of a sum equal to the charge made against similarly benefited lands within the district.
(2) In case such connections have been made without the payment of a charge for the connection, the district may refuse to allow sewer service to the lands until permission for the connection is granted and the charge for the service is paid to the district.