65 ILCS 5/11-138-2

Whenever it is necessary for the construction, maintenance, and operation of such a line or lines of water-pipe, pumping stations, reservoirs, other appurtenances, or for the protection of reservoirs, submerged land, and the source of supply from contamination, pollution, or damage from any cause, to take or damage private property adjacent to these improvements, that property may be taken or damaged, and the compensation therefor may be ascertained and paid in the manner which may be then provided by law for the exercise of the right of eminent domain.