70 ILCS 405/15
The Secretary of State shall examine the application and statement and, if he finds that the name proposed for the district is not identical with that of any other district of this State or so nearly similar as to lead to confusion or uncertainty, he shall receive and file them and shall record them in an appropriate book of record in his office. If the Secretary of State finds that the name proposed for the district is identical with that of any other district of this State, or so nearly similar as to lead to confusion and uncertainty, he shall certify such fact to the Department, which shall thereupon submit to the Secretary of State a new name for the district, which is not subject to such defects. Upon receipt of such new name, free of such defects, the Secretary of State shall record the application and statement, with the name so modified, in an appropriate book of record in his office. When the application and statement have been made, filed, and recorded, as herein provided, the district constitutes a public body corporate and politic. The Secretary of State shall make and issue to the temporary directors a certificate, under the seal of the State, of the due organization of the district, and shall record such certificate with the application and statement. A copy of the statement and the certificate of organization, duly certified by the Secretary of State, shall be recorded with the recorder of the county in which the office of the district is located.
70 ILCS 405/15