I often hear comments about how disgusting it is, and sad, that Milwaukee dumps sewage into the Lake during heavy rainfall. Often implying that Milwaukee is unique in such a practice.
What these people, and I assume many others, are unaware of is that "a third of U.S. sewer systems are operating beyond their capacity and are regularly dumping waste into rivers and lakes."
This is a national issue, aggravated by sprawl. The more we pave over the land, it's ability to absorb declines significantly, and our waterways suffer.