| 2020 | 2019-2020 | 2021-2022 | |||||||
Census Data | Violations | Chlorine | TTHM | Chlorine | TTHM | |||||
State | Population | Income | Systems | Total | [ppm] | [ppb] | [ppm] | [ppb] | % Change | |
IL | Illinois | 12,506,244 | $72,205 | 32,614 | 76,309 | 1.1 | 26.2 | 1.3 | 37.6 | 44% |
IN | Indiana | 5,461,969 | $62,743 | 18,784 | 82,993 | 2.1 | 48.0 | 0.7 | 66.0 | 38% |
IA | Iowa | 2,951,224 | $65,600 | 18,258 | 25,659 | 2.4 | 50.0 | 2.4 | 68.5 | 37% |
KS | Kansas | 2,828,391 | $64,124 | 11,349 | 18,304 | 1.1 | 10.8 | 1.4 | 47.7 | 342% |
MI | Michigan | 8,735,388 | $63,498 | 22,083 | 73,588 | 1.7 | 3.4 | 1.8 | 5.5 | 62% |
MN | Minnesota | 5,012,820 | $77,720 | 35,547 | 10,301 | 2.7 | 20.2 | 2.9 | 32.5 | 61% |
MO | Missouri | 5,589,463 | $61,847 | 21,770 | 44,439 | 3.4 | 21.1 | 3.6 | 29.7 | 41% |
NE | Nebraska | 1,705,357 | $66,817 | 9677 | 12,373 | 2.2 | 27.5 | 1.1 | 34.2 | 24% |
ND | N. Dakota | 709,655 | $66,519 | 2943 | 4013 | 3.3 | 24.3 | 3.1 | 28.8 | 19% |
OH | Ohio | 10,914,524 | $62,262 | 32,098 | 84,957 | 1.1 | 55.0 | 1.2 | 60.8 | 11% |
SD | S. Dakota | 814,159 | $66,143 | 4310 | 23,270 | 1.0 | 6.3 | 1.0 | 23.8 | 278% |
WI | Wisconsin | 5,027,143 | $67,125 | 34,404 | 82,289 | 1.3 | 12.2 | 1.7 | 20.7 | 70% |