Home › Wisconsin
Wisconsin Water Hardness
Across the 6 cities we track in Wisconsin, hardness ranges from 7.6–19 GPG, with 6 cities running hard or very hard, and 1 more city doesn't publish a figure.
6 cities tracked. View the Wisconsin hardness map → · Is Wisconsin water safe to drink? →
Cities with no published figure
These Wisconsin cities don't publish a hardness number (it isn't a regulated parameter), so they can't be ranked — but we still track them. See each page for how to check your own tap.