Water Quality in Ohio
Water hardness and contaminant data for 10 cities across Ohio. Find your city below to see a detailed water quality profile.
10
Cities
158
Avg Hardness (PPM)
267
Hardest City (PPM)
Ohio Cities by Water Hardness
| City | Hardness (PPM) | Level | PFAS (ppt) | Source |
|---|---|---|---|---|
| Dayton | 267 | Extremely Hard | 6 | Great Miami Buried Valley Aquifer |
| Columbus | 180 | Hard | 7 | Scioto River + reservoirs |
| Lorain | 178 | Hard | 5 | Lake Erie |
| Youngstown | 160 | Hard | 5 | Meander Creek Reservoir |
| Toledo | 148 | Hard | 6 | Lake Erie |
| Cleveland | 136 | Hard | 6 | Lake Erie |
| Akron | 135 | Hard | 6 | Lake Rockwell, Cuyahoga River |
| Hamilton | 128 | Hard | 4 | Great Miami River wells |
| Canton | 125 | Hard | 6 | Sippo Creek wells, Tuscawaras River |
| Cincinnati | 123 | Hard | 6 | Ohio River |