State | 2010 | 2005 | 2015 | ||||||||
Census Data | Violations | TTHM | Violations | TTHM | |||||||
Population | Income | Systems | Total | TTHM | [ppb] | Total | TTHM | [ppb] | % Change | ||
AK | Alaska | 710,231 | $64,576 | 1556 | 3687 | 64 | 15.8 | 4527 | 42 | 40.0 | 153.2% |
AZ | Arizona | 6,392,017 | $46,789 | 1573 | 5018 | 19 | 17.3 | 3637 | 3 | 61.0 | 252.6% |
CA | California | 37,253,956 | $57,708 | 7781 | 2205 | 98 | 27.0 | 2473 | 103 | 68.3 | 153.0% |
CO | Colorado | 5,029,196 | $54,046 | 1975 | 1325 | 64 | 31.5 | 3379 | 39 | 59.0 | 87.3% |
HA | Hawaii | 1,360,301 | $63,030 | 130 | 47 | NR | NR | 5 | NR | NR | NR |
ID | Idaho | 1,567,582 | $43,490 | 1957 | 887 | 2 | 22.1 | 1851 | 2 | 75.0 | 239.4% |
MT | Montana | 989,415 | $42,666 | 670 | 3914 | 0 | 40.0 | 6810 | 44 | 71.0 | 77.5% |
NV | Nevada | 2,700,551 | $51,001 | 558 | 815 | 198 | 33.0 | 752 | 2 | 73.0 | 121.2% |
NM | New Mexico | 2,059,179 | $42,090 | 1195 | 860 | 9 | 22.0 | 1587 | 13 | 45.0 | 104.5% |
OR | Oregon | 3,831,074 | $46,560 | 1130 | 3483 | 3 | 27.7 | 4360 | 6 | 78.1 | 181.9% |
UT | Utah | 2,763,885 | $54,744 | 1022 | 1936 | 0 | 21.0 | 3945 | 2 | 62.0 | 195.2% |
WA | Washington | 6,724,540 | $55,631 | 4133 | 10,399 | 12 | 22.3 | 4069 | 76 | 50.0 | 124.2% |
WY | Wyoming | 563,626 | $53,512 | 787 | 233 | 9 | 24.0 | 215 | 2 | 68.0 | 183.3% |