Citizens Utilities Co. v. Pollution Control Board

The appellant, Citizens Utilities Company, sought appellate review, pursuant to Supreme Court Rule 335, of two decisions of the Illinois Pollution Control Board (the Board). We found the factual background of both cases to be closely intertwined, with related issues presented in both cases. Accordingly, on our own motion, we ordered the cases consolidated for argument and decision.

The appellant, Citizens Utilities Company, operates a sewage treatment plant in Will County known as the West Suburban Waste-water Treatment Plant No. 1 (W.S.B. No. 1). The plant was originally built in 1960, with…