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| 2020 | 2019-2020 | 2021-2022 | |||||||
| Census Data | Violations | Chlorine | TTHM | Chlorine | TTHM | |||||
| State | Population | Income | Systems | Total | [ppm] | [ppb] | [ppm] | [ppb] | % Change | |
| AL | Alabama | 5,696,966 | $53,913 | 7557 | 8757 | 1.0 | 44.0 | 2.2 | 52.0 | 18% |
| AR | Arkansas | 2,901,707 | $52,528 | 4793 | 14,255 | 0.9 | 40.2 | 1.6 | 49.0 | 22% |
| FL | Florida | 20,689,846 | $63,062 | 18,346 | 52,157 | 0.8 | 25.3 | 0.9 | 25.5 | 79% |
| GA | Georgia | 9,665,530 | $66,559 | 14,258 | 34,913 | 1.5 | 59.0 | 1.9 | 61.3 | 4% |
| KY | Kentucky | 4,512,989 | $55,573 | 2730 | 17,895 | 1.1 | 52.8 | 1.3 | 73.0 | 38% |
| LA | Louisiana | 5,075,813 | $52,087 | 12,562 | 19,841 | 3.2 | 22.9 | 2.8 | 28.8 | 26% |
| MS | Mississippi | 3,141,331 | $48,716 | 10,304 | 133,139 | 1.9 | 38.6 | 3.8 | 67.0 | 74% |
| NC | N. Carolina | 8,765,136 | $61,972 | 29,476 | 146,744 | 2.5 | 58.0 | 2.5 | 76.0 | 31% |
| OK | Oklahoma | 3,699,347 | $55,826 | 10,825 | 54,382 | 1.8 | 21.6 | 3.5 | 74.4 | 244% |
| SC | S. Carolina | 4,010,497 | $59,318 | 6067 | 11,299 | 0.9 | 52.9 | 1.0 | 57.0 | 8% |
| TN | Tennessee | 7,188,955 | $59,695 | 7291 | 11,895 | 1.7 | 39.8 | 1.9 | 49.9 | 25% |
| TX | Texas | 28,223,188 | $66,963 | 112,250 | 149,969 | 1.9 | 36.4 | 1.8 | 62.6 | 72% |
| VA | Virginia | 7,497,727 | $80,963 | 21,973 | 36,034 | 1.3 | 26.0 | 1.5 | 50.0 | 92% |
| WV | W. Virginia | 1,576,588 | $51,248 | 6366 | 51,205 | 1.4 | 58.0 | 2.3 | 68.0 | 17% |