Missouri
1,432 Utilities
Serving: 5,425,000
Data available: 2014-2019
Contaminants Found: 103
EWG's drinking water quality report for Missouri shows results of tests conducted by the water utilities in Missouri and provided to EWG by the Missouri Department of Natural Resources - Public Drinking Water Program.
Below are utilities in Missouri serving over 10,000 people, listed alphabetically. Click the "more" button below to get the full list of utilities serving over 10,000 people.
Large utilities in Missouri
| Utility | Location | People Served |
|---|---|---|
| Belton | Belton, MO | 23,290 |
| Blue Springs | Blue Springs, MO | 52,530 |
| Bolivar | Bolivar, MO | 10,885 |
| Boone County Cons. PWSD1 | Columbia, MO | 21,500 |
| Boone County PWSD 9 | Columbia, MO | 12,200 |
| Branson | Branson, MO | 11,880 |
| Butler County Public Water Supply District 1 | Poplar Bluff, MO | 11,000 |
| Callaway 2 Water District | Fulton, MO | 13,080 |
| Cape Girardeau | Cape Girardeau, MO | 39,628 |
| Carthage | Carthage, MO | 14,570 |
| Cole County PWSD 1 | Jefferson City, MO | 12,493 |
| Cole County PWSD 2 | Jefferson City, MO | 12,945 |
| Columbia | Columbia, MO | 100,733 |
| Eureka | Eureka, MO | 10,574 |
| Excelsior Springs | Excelsior Springs, MO | 11,084 |
| Farmington | Farmington, MO | 18,425 |
| Festus | Festus, MO | 11,600 |
| Fort Leonard Wood | Ft Leonard Wood, MO | 34,000 |
| Fulton | Fulton, MO | 12,128 |
| Gladstone | Kansas City, MO | 27,000 |
| Grain Valley | Grain Valley, MO | 13,684 |
| Hannibal | Hannibal, MO | 17,916 |
| Independence | Independence, MO | 117,240 |
| Jackson | Jackson, MO | 14,932 |
| Jackson County PWSD 2 | Raytown, MO | 15,923 |
| Jackson County PWSD1 | Grandview, MO | 25,000 |
| Jefferson County Cons. PWSD C 1 | Barnhart, MO | 35,000 |
| Jefferson County PWSD 10 | Arnonld, MO | 10,000 |
| Jefferson County PWSD 2 | High Ridge, MO | 20,000 |
| Jefferson County PWSD 3 | Arnold, MO | 17,000 |
Utilities that accumulated/accrued the most violation points as of April 2019 to March 2021 in Missouri
The Environmental Protection Agency's Enforcement and Compliance History Online (ECHO) database collects compliance and enforcement-related information for drinking water utilities nationwide. ECHO water quality violation scores take into account federal health-based water quality standards, as well as monitoring, reporting and other drinking water quality requirements. Points are accrued based on specific problems at the utility - violations of health-based drinking water standards receive more points than monitoring and reporting violations - and the length of time until the violations were corrected.
Large utilities that accumulated/accrued the most violation points as of April 2019 to March 2021 in Missouri
The Environmental Protection Agency's Enforcement and Compliance History Online (ECHO) database collects compliance and enforcement-related information for drinking water utilities nationwide. ECHO water quality violation scores take into account federal health-based water quality standards, as well as monitoring, reporting and other drinking water quality requirements. Points are accrued based on specific problems at the utility - violations of health-based drinking water standards receive more points than monitoring and reporting violations - and the length of time until the violations were corrected.
| Utility | Location | People Served | Violation Points |
|---|---|---|---|
| Springfield | Springfield, MO | 170,554 | 1 |
Contaminants found in Missouri above health guidelines
| Found above health guidelines | Found | ||||||
|---|---|---|---|---|---|---|---|
| Contaminant | # of Utilities | People Served | # of Utilities | People Served | |||
Total trihalomethanes (TTHMs) | 740 | 4,930,482 | 741 | 4,941,482 | |||
Bromodichloromethane | 755 | 4,917,172 | 757 | 4,924,366 | |||
Dichloroacetic acid | 691 | 4,695,600 | 694 | 4,759,689 | |||
Chloroform | 711 | 4,610,142 | 826 | 4,869,558 | |||
Haloacetic acids (HAA5) | 444 | 4,189,900 | 444 | 4,189,900 | |||
Haloacetic acids (HAA9) | 199 | 4,077,225 | 178 | 4,095,697 | |||
Trichloroacetic acid | 444 | 4,052,373 | 446 | 4,171,713 | |||
Nitrate and nitrite | 543 | 3,836,658 | 1,038 | 5,082,590 | |||
Chromium (hexavalent) | 156 | 3,750,297 | 161 | 3,972,570 | |||
Dibromochloromethane | 681 | 3,469,320 | 690 | 3,832,044 | |||
Dibromoacetic acid | 396 | 3,202,355 | 399 | 3,689,532 | |||
Atrazine | 182 | 3,049,872 | 166 | 3,166,475 | |||
Nitrate | 89 | 2,791,690 | 90 | 2,810,287 | |||
Bromochloroacetic acid | 406 | 2,720,892 | 406 | 2,720,892 | |||
Chlorodibromoacetic acid | 324 | 2,181,311 | 324 | 2,181,311 | |||
Bromodichloroacetic acid | 335 | 1,416,246 | 337 | 1,453,246 | |||
Radium, combined (-226 & -228) | 433 | 1,023,371 | 442 | 1,356,308 | |||
Arsenic | 148 | 796,262 | 137 | 792,467 | |||
Bromoform | 261 | 665,029 | 422 | 2,778,718 | |||
Radon | 22 | 337,044 | 15 | 334,674 | |||
Chlorate | 35 | 332,421 | 67 | 2,126,386 | |||
Chlorite | 58 | 155,292 | 45 | 149,994 | |||
Tribromoacetic acid | 46 | 146,543 | 46 | 146,543 | |||
Tetrachloroethylene (perchloroethylene) | 17 | 64,456 | 17 | 64,456 | |||
Uranium | 36 | 54,804 | 61 | 430,768 | |||
Cadmium | 37 | 54,361 | 39 | 64,136 | |||
Manganese | 17 | 23,511 | 998 | 5,004,999 | |||
Thallium | 3 | 19,797 | 3 | 19,797 | |||
Aluminum | 3 | 13,897 | 212 | 1,197,198 | |||
Carbon tetrachloride | 5 | 12,325 | 6 | 12,850 | |||
Simazine | 1 | 2,529 | 4 | 77,491 | |||
Antimony | 2 | 2,200 | 11 | 371,105 | |||
Barium | 7 | 1,681 | 1,268 | 3,965,782 | |||
Chloromethane | 2 | 1,658 | 2 | 1,658 | |||
Styrene | 1 | 125 | 3 | 311 | |||
Trichloroethylene | 1 | 90 | 9 | 25,339 | |||
1,2-Dichloroethane | 1 | 30 | 1 | 30 | |||
Contaminants found in Missouri above legal limits
| Contaminant | # of Utilities | People Served | |
|---|---|---|---|
Radium, combined (-226 & -228) | 11 | 11,995 | |
Total trihalomethanes (TTHMs) | 8 | 7,785 | |
Carbon tetrachloride | 1 | 71 | |
Fluoride | 1 | 30 |