410 ILCS 650/11.01

(a) Any county under 1,000,000 inhabitants may, by resolution of its county board, create the position of sanitary inspector and may appoint any necessary assistants. Each sanitary inspector shall be a registered sanitarian under the "Sanitarian Registration Act".

(b) The sanitary inspector shall have the power to enforce and observe the rules, regulations and orders of the Department of Public Health and the provisions of this Act.

(c) The sanitary inspector appointed pursuant to this Section has jurisdiction throughout the entire county, except within:

(1) Municipalities;

(2) Any public health district organized under "An Act to authorize the organization of public health districts and for the establishment and maintenance of a health department for the same", filed June 26, 1917, as amended; and

(3) Any public health district organized under "An Act in relation to the establishment and maintenance of county and multiple-county public health departments", approved July 9, 1943, as amended.