Aw, ***'on. The turds that floated down the Cuyahoga got cleaned up by the 70's.
I do remember a school chum's birthday party, which was celebrated on a sort of ferry boat that started out at the mouth of the Cuyahoga River and went upstream by the steel mills, forges and the like. We ended up taking teams and counting the floating turds on the port and starboard side of the vessel. A few years later, the river, turds and all, caught fire. Somehow that got official attention, and a cleanup was started.