35 ILCS 200/22-70
A tax deed issued with respect to any property sold under this Code shall not extinguish or affect any conservation right, easement, covenant running with the land or right-of-way for water, sewer, electricity, gas, telephone or other public service use which was created, on or over that real property before the time that property was sold under this Code and which is evidenced either by a recorded instrument or by wires, poles, pipes, equipment or other public service facilities. When the property described in a tax deed issued under this Code is a dominant or a servient tenement with respect to any private easement or easements, created in good faith expressly or by operation of law for the benefit of a dominant tenement or tenements, with respect to the easement or easements the tax deed shall have the same effect as a deed of conveyance made by the owner of the property to the tax deed grantee, just prior to the issuance of the deed.
This Section does not apply to tax deeds issued because the owner of any easement, covenant running with the land or right-of-way has failed to pay taxes or special assessments assessed for that easement, covenant running with the land or right-of-way.
35 ILCS 200/22-70