Water Quality in Oklahoma
Water hardness and contaminant data for 6 cities across Oklahoma. Find your city below to see a detailed water quality profile.
6
Cities
198
Avg Hardness (PPM)
236
Hardest City (PPM)
Oklahoma Cities by Water Hardness
| City | Hardness (PPM) | Level | PFAS (ppt) | Source |
|---|---|---|---|---|
| Norman | 236 | Very Hard | 3 | Lake Thunderbird |
| Broken Arrow | 224 | Very Hard | 2 | Tulsa Water (Spavinaw Creek system) |
| Lawton | 204 | Very Hard | 5 | Lake Lawtonka, Lake Ellsworth |
| Edmond | 197 | Very Hard | 4 | Arcadia Lake, Lake Hefner |
| Oklahoma City | 170 | Hard | 3 | Lakes + groundwater |
| Tulsa | 154 | Hard | 4 | Spavinaw Lake, Oologah Lake |