Honestly the mistake of the original law was to limit it only to "navigable" waters, because the land does not have two different water systems. Most water end

Honestly the mistake of the original law was to limit it only to "navigable" waters, because the land does not have two different water systems. Most water ends up in a navigable body at some point. If someone is dumping mine tailings in a river but is told to stop so they switch to dumping them in the creek that feeds the river then nothing has been solved.