7 cities covered
North Carolina water quality and radon, by city
5 of 7 covered North Carolina cities use chloramine in at least part of the system, and 0 have hard water. 8 of North Carolina's 100 counties are EPA radon zone 1.
| City | Disinfectant | Hardness | Lead | PFAS | Radon |
|---|---|---|---|---|---|
| Charlotte | Chlorine | 1.8 gpg | Not detected | Not detected | Zone 3 |
| Raleigh | Chloramine | 1.5 gpg | Not detected | PFOS | Zone 2 |
| Greensboro | Chloramine | 2.1 gpg | Not detected | PFOS, PFOA | Zone 3 |
| Durham | Chloramine | 1.7 gpg | Not detected | PFOS, PFOA | Zone 3 |
| Winston-Salem | Chlorine | 1.4 gpg | Not detected | Not detected | Zone 2 |
| Fayetteville | Chloramine | 1.7 gpg | Not detected | PFOA, PFOS | Zone 3 |
| Cary | Chloramine | 1.9 gpg | Not detected | Detected | Zone 2 |
North Carolina radon zones
Zone 1 (highest)8 counties
Zone 231 counties
Zone 3 (lowest)61 counties