2 cities covered
Oklahoma water quality and radon, by city
2 of 2 covered Oklahoma cities use chloramine in at least part of the system, and 1 have hard water. None of Oklahoma's 77 counties is EPA radon zone 1, but EPA still recommends testing every home.
| City | Disinfectant | Hardness | Lead | PFAS | Radon |
|---|---|---|---|---|---|
| Oklahoma City | Chloramine | 9.2 gpg | Not detected | Not detected | Zone 3 |
| Tulsa | Chloramine | 6.4 gpg | 1.2 ppb | Not detected | Zone 3 |
Oklahoma radon zones
Zone 1 (highest)0 counties
Zone 29 counties
Zone 3 (lowest)68 counties