5 cities covered
Tennessee water quality and radon, by city
0 of 5 covered Tennessee cities use chloramine in at least part of the system, and 0 have hard water. 39 of Tennessee's 95 counties are EPA radon zone 1.
| City | Disinfectant | Hardness | Lead | PFAS | Radon |
|---|---|---|---|---|---|
| Memphis | Chlorine | 2.4 gpg | 4.7 ppb | Not detected | Zone 3 |
| Knoxville | Chlorine | 5.3 gpg | 0.6 ppb | Detected | Zone 1 |
| Chattanooga | Chlorine | 4.1 gpg | 1 ppb | Detected | Zone 2 |
| Clarksville | Chlorine | 4.1 gpg | 1 ppb | Not detected | Zone 2 |
| Murfreesboro | Chlorine | 5.9 gpg | 0.6 ppb | PFOA | Zone 1 |
Tennessee radon zones
Zone 1 (highest)39 counties
Zone 232 counties
Zone 3 (lowest)24 counties