Milwaukee county uses water from Lake Michigan but the adjacent county where she lives is on the other side of a sun-continental divide, which means that the only way they would be allowed to use the water from the lake is if the wastewater would be returned through the sewers because it would take too long to filter back, according to whoever makes the decision about that (EPA, DNR, etc). Most of the water used by that county comes from wells and the quality ha been an issue for a long time, so they need to treat it to remove the minerals, sulfur (it's really nasty, if untreated) and for softening.
I think she's drinking directly from the spigot and her comments are one of the results.