1 city covered
Maryland water quality and radon, by city
0 of 1 covered Maryland cities use chloramine in at least part of the system, and 1 have hard water. 8 of Maryland's 24 counties are EPA radon zone 1.
| City | Disinfectant | Hardness | Lead | PFAS | Radon |
|---|---|---|---|---|---|
| Baltimore | Chlorine | 9.9 gpg | 2.7 ppb | Not detected | Zone 2 |
Maryland radon zones
Zone 1 (highest)8 counties
Zone 29 counties
Zone 3 (lowest)7 counties