State | 2020 | 2019-2020 | 2016-2017 | ||||||||
Census Data | Violations Chlorine | TTHM | Chlorine | TTHM | |||||||
Population | Income | Systems | Total | [ppm] | [ppb] | [ppm] | [ppb] | % Change | |||
AK | Alaska | 5,696,966 | $77,845 | 6706 | 137,133 | 0.49 | 20.0 | 0.47 | 30.0 | 50% | |
AZ | Arizona | 2,901,707 | $69,056 | 15,611 | 143,478 | 0.90 | 60.0 | 0.90 | 64.0 | 7% | |
CA | California | 20,689,846 | $84,907 | 60,867 | 71,279 | 2.00 | 46.0 | 2.0 | 53.0 | 15% | |
CO | Colorado | 9,665,530 | $82,254 | 15,053 | 52,823 | 0.20 | 24.6 | 0.49 | 27.2 | 11% | |
HA | Hawaii | 4,512,989 | $84,857 | 1241 | 1325 | NR | 15.4 | NR | NR | NR | |
ID | Idaho | 5,075,813 | $66,474 | 8302 | 46,320 | 0.20 | 59.9 | 0.20 | 74.7 | 25% | |
MT | Montana | 3,141,331 | $63,249 | 12,978 | 66,233 | 1.10 | 50.0 | 1.06 | 50.0 | 0 | |
NV | Nevada | 8,765,136 | $66,274 | 6464 | 14,546 | NR | 4.9 | NR | 5.1 | 4% | |
NM | New Mexico | 3,699,347 | $53,992 | 10,145 | 40,312 | 2.40 | 15.0 | 2.70 | 15.6 | 4% | |
OR | Oregon | 4,010,497 | $71,562 | 14,219 | 119,569 | 1.60 | 8.1 | 1.40 | 18.1 | 123% | |
UT | Utah | 7,188,955 | $79,449 | 10,208 | 59,000 | 1.20 | 33.7 | 1.27 | 37.4 | 11% | |
WA | Washington | 28,223,188 | $84,247 | 13,598 | 126,893 | 1.21 | 49.0 | 1.10 | 56.0 | 14% | |
WY | Wyoming | 7,497,727 | $65,204 | 6186 | 15,158 | NR | 13.1 | NR | 13.1 | 0 | |