Ill. Admin. Code tit. 35, § 670.106
Each request, report, notice, or other document submitted to the Agency under this Part shall be mailed to the following address:
Division of Public Water Supplies
Bureau of Water
Illinois Environmental Protection Agency
2520 W. Iles Ave.
Post Office Box 19276
Springfield, Illinois 62794-9276
(Source: Amended at 49 Ill. Reg. 16209, effective December 4, 2025)