Home › Ohio
Ohio Water Hardness
Across the 6 cities we track in Ohio, hardness ranges from 6.3–25 GPG, with 4 cities running hard or very hard, and 2 more cities don't publish a figure.
6 cities tracked. View the Ohio hardness map → · Is Ohio water safe to drink? →
Cities with no published figure
These Ohio 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.