Several environmental groups intend to sue Alliant Energy’s Iowa affiliate, claiming it is discharging polluted groundwater into waters upstream of Ottumwa without a permit.

Several environmental groups intend to sue Alliant Energy’s Iowa affiliate, claiming it is discharging polluted groundwater into waters upstream of Ottumwa without a permit.

This includes the set of all positive whole numbers, all positive and negative whole numbers, grid squares on an infinite ...