Arizona County Drinking Water Report Cards
Compare county Drinking Water Violation Exposure Scores in Arizona. Scores combine health-based violations per 100,000 people served and the share of active systems with unresolved health-based violations. View methodology or download the CSV.
| Score | Grade | County | Systems | Population | Health Violations | Per 100K | Active Health Systems |
|---|---|---|---|---|---|---|---|
| 0 | F | Santa Cruz County | 37 | 49,946 | 87 | 174.2 | 9 |
| 3 | F | Graham County | 16 | 29,739 | 24 | 80.7 | 3 |
| 9 | F | Yuma County | 51 | 217,720 | 1,134 | 520.9 | 8 |
| 14 | F | Coconino County | 115 | 180,502 | 216 | 119.7 | 15 |
| 19 | F | Cochise County | 104 | 129,689 | 298 | 229.8 | 11 |
| 20 | F | Mohave County | 119 | 231,271 | 446 | 192.8 | 12 |
| 20 | F | La Paz County | 82 | 30,310 | 386 | 1273.5 | 8 |
| 21 | F | Navajo County | 63 | 99,221 | 132 | 133.0 | 6 |
| 23 | F | Yavapai County | 237 | 223,167 | 840 | 376.4 | 20 |
| 23 | F | Gila County | 103 | 62,233 | 221 | 355.1 | 9 |
| 27 | F | Apache County | 47 | 23,153 | 68 | 293.7 | 3 |
| 29 | F | Maricopa County | 215 | 4,392,896 | 224 | 5.1 | 12 |
| 31 | F | Pinal County | 94 | 505,241 | 953 | 188.6 | 4 |
| 37 | F | Pima County | 195 | 1,138,545 | 230 | 20.2 | 3 |
| 40 | F | Greenlee County | 11 | 8,173 | 54 | 660.7 | 0 |