10 cities covered
Arizona water quality and radon, by city
0 of 10 covered Arizona cities use chloramine in at least part of the system, and 10 have hard water. None of Arizona's 15 counties is EPA radon zone 1, but EPA still recommends testing every home.
| City | Disinfectant | Hardness | Lead | PFAS | Radon |
|---|---|---|---|---|---|
| Phoenix | Chlorine | 13.9 gpg | 2.7 ppb | Detected | Zone 2 |
| Tucson | Chlorine | 10.5 gpg | 0.6 ppb | Not detected | Zone 2 |
| Mesa | Chlorine | 8.2 gpg | 5 ppb | Detected | Zone 2 |
| Gilbert | Chlorine | 9.8 gpg | Not detected | PFOS, PFOA | Zone 2 |
| Chandler | Chlorine | 8.1 gpg | 1.4 ppb | Detected | Zone 2 |
| Glendale | Chlorine | 9.8 gpg | 1.6 ppb | Detected | Zone 2 |
| Scottsdale | Chlorine | 10.1 gpg | 2.3 ppb | Detected | Zone 2 |
| Peoria | Chlorine | 9.8 gpg | Not detected | PFOA | Zone 2 |
| Tempe | Chlorine | 10.5 gpg | 4.4 ppb | PFOS, PFOA | Zone 2 |
| Surprise | Chlorine | 7.9 gpg | Not detected | Not detected | Zone 2 |
Arizona radon zones
Zone 1 (highest)0 counties
Zone 215 counties
Zone 3 (lowest)0 counties