Yes I'd swim in power plant 'wastewater' (so long as the temperature was okay).    Why not?   (Depends of course on the power plant).    It's mostly just cooling water that's been taken out of a river, or sometimes discharge from a hydro dam.   Generally speaking, water quality standards ensure that it's no worse than the natural river it discharges into.    So as a generality, yes.,(reply>), I grew up swimming in Lake Eerie.<br>How bad could the power plant wastewater be?,(reply>), swimming pools are probably worse with all the human waste....,(reply>), I live very close to Lake Ontario, facing Toronto in Canada, and the water in this video looks cleaner than any beach I've ever seen. Makes me feel icky lmao. People still flock to the beaches to swim regardless😂,(reply>), Honestly, I think I've swim in worse waters