70 ILCS 405/22.09
As a condition to the extending of any benefits under this Act to, or the performance of work upon, any lands not owned or controlled by this State or any of its agencies, the directors may require contributions in money, services, materials, or otherwise to any operations conferring such benefits, and may require land owners to enter into and perform such agreements or covenants as to the permanent use of such lands as will tend to prevent or control erosion thereof; or promote the welfare of the lands of the district.
The District may charge fees to any person who makes a request for services or receives benefits rendered by the District, or who causes or undertakes to cause the District to perform a function prescribed by this Act, including but not limited to any function prescribed by Section 22.02a of this Act, provided that such charges are uniform. The Directors shall maintain a uniform schedule for such fees and may from time to time revise such schedule. The charging of any such fees if uniformly charged and in accordance with a uniform schedule by any District to any person for any such service or benefits or performance of any such functions prior to the effective date of this amendatory Act of 1975 is ratified.
70 ILCS 405/22.09