2 cities covered
Minnesota water quality and radon, by city
2 of 2 covered Minnesota cities use chloramine in at least part of the system, and 1 have hard water. 68 of Minnesota's 87 counties are EPA radon zone 1.
| City | Disinfectant | Hardness | Lead | PFAS | Radon |
|---|---|---|---|---|---|
| Minneapolis | Chloramine | 5.2 gpg | 2 ppb | Not detected | Zone 1 |
| St. Paul | Chloramine | 7.3 gpg | 8 ppb | Not detected | Zone 1 |
Minnesota radon zones
Zone 1 (highest)68 counties
Zone 219 counties
Zone 3 (lowest)0 counties