When Among Crows (Curse Bearer, #1)

by Veronica Roth

Almost all the strzygi in the room are women, and that’s no surprise. Dymitr’s father told him that Chicago was a city ruled by monsters, and all those monsters were women—strzyga, zmora, and llorona, each a legend of wronged women, sinful women, mysterious women. Tragic and powerful figures, all, not to be underestimated.

She heard once that they closed the beaches because the E. coli levels of the lake got too high, causing her to wonder just how high they were on an average weekend, and why anyone would ever swim in Lake Michigan while that information was readily available—

Lol because there are parts of the lake and river now safe. :)