Know Your Environment. Protect Your Health.

STATE

Missouri

CONTAMINANTS

103

serves

5,558,000

data

2013-2024

UTILITIES

1,437

Overview

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.

LARGE UTILITIES
ALL UTILITIES WITH VIOLATIONS
LARGE UTILITIES WITH VIOLATIONS

Large utilities in Missouri

Below are utilities in Missouri serving over 10,000 people, listed alphabetically.

UtilityLocationPeople Served
BeltonBelton, MO23,598
Blue SpringsBlue Springs, MO54,395
BolivarBolivar, MO11,000
Boone County Cons. PWSD1Columbia, MO24,700
Boone County PWSD 9Columbia, MO15,035
BransonBranson, MO11,416
Butler County Public Water Supply District 1Poplar Bluff, MO11,500
Callaway 2 Water DistrictFulton, MO13,080
Cape GirardeauCape Girardeau, MO39,941
CarthageCarthage, MO14,600
Cole County PWSD 1Jefferson City, MO12,493
Cole County PWSD 2Jefferson City, MO12,985
ColumbiaColumbia, MO126,254
EurekaEureka, MO11,000
Excelsior SpringsExcelsior Springs, MO11,084
FarmingtonFarmington, MO18,217
FestusFestus, MO12,054
Fort Leonard WoodFt Leonard Wood, MO34,000
FultonFulton, MO12,128
GladstoneGladstone, MO27,365
Grain ValleyGrain Valley, MO16,000
HannibalHannibal, MO17,108
Harrisonville PWSHarrisonville, MO10,019
Henry County Water CompanyClinton, MO11,373
IndependenceIndependence, MO117,084
JacksonJackson, MO15,481
Jackson County PWSD 2Raytown, MO16,425
Jackson County PWSD1Grandview, MO24,500
Jefferson County Cons. PWSD C 1Barnhart, MO36,000
Jefferson County PWSD 10Arnonld, MO10,000
Jefferson County PWSD 2High Ridge, MO16,548
Jefferson County PWSD 3Arnold, MO17,000
Jefferson County PWSD1Arnold, MO20,000
Johnson County PWSD 2Holden, MO11,652
Kansas CityKansas City, MO513,800
Kearney PWSKearney, MO11,500
KennettKennett, MO10,500
KirksvilleKirksville, MO17,304
KirkwoodKirkwood, MO28,000
LebanonLebanon, MO14,932
Lees SummitLees Summit, MO99,400
LibertyLiberty, MO31,167
Lincoln County PWSD 1Winfield, MO14,000
Macon County PWSD 1Macon, MO11,606
MarshallMarshall, MO13,065
MaryvilleMaryville, MO10,775
Missouri American - JoplinJoplin, MO73,728
Missouri American Jefferson City DistrictJefferson City, MO30,075
Missouri American Platte CountySt Joseph, MO10,600
Missouri American St. Louis County & St. Charles CountyChesterfield, MO1,100,000
Missouri American WarrensburgWarrensburg, MO20,473
Mo American MexicoMexico, MO12,000
MO American St. JosephSt Joseph, MO77,000
MoberlyMoberly, MO13,783
NeoshoNeosho, MO12,157
NixaNixa, MO24,532
O'FallonO Fallon, MO32,515
OzarkOzark, MO22,000
Poplar BluffPoplar Bluff, MO17,043
RaymoreRaymore, MO19,767
Raytown Water CompanyRaytown, MO17,066
RepublicRepublic, MO16,100
RollaRolla, MO20,800
SedaliaSedalia, MO22,000
SikestonSikeston, MO16,291
Smithville PWSSmithville, MO10,290
SpringfieldSpringfield, MO172,025
St. CharlesSt Charles, MO73,040
St. Charles County PWSD 2O Fallon, MO100,587
St. Louis CitySt Louis, MO304,709
St. PetersSt Peters, MO52,575
Thomas Hill PWSD 1Moberly, MO10,880
TroyTroy, MO12,500
Union PWSUnion, MO12,348
University of Missouri ColumbiaColumbia, MO40,000
WashingtonWashington, MO14,068
Webb CityWebb City, MO12,488
WentzvilleWentzville, MO41,784
West PlainsWest Plains, MO12,000
Whiteman Air BaseWhiteman Afb, MO10,707

Utilities that accumulated/accrued the most violation points as of July 2021 to June 2024 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.

UtilityLocationPeople ServedViolation Points
Clubb Villa Senior LivingPark Hills, MO11075
Crestview Mobile Home ParkSedalia, MO7252
Silex PWSSilex, MO20650
New Hamburg CentralBenton, MO4549
Summerhaven SubdivisionTroy, MO7540
Ozark Park EstatesBranson, MO15027
Jamestowne Mobile Home ParkMount Vernon, MO4626
Bates County Public Water Supply District 2Amsterdam, MO75225
Memphis PWSMemphis, MO1,82224
Cleveland PWSCleveland, MO69020
Blodgett PWSBlodgett, MO21517
MO American IrontonChesterfield, MO1,46015
Agape Boarding SchoolStockton, MO25010
Wyatt PWSWyatt, MO36210
Bertrand PWSBertrand, MO74310
Lilbourn PWSLilbourn, MO1,01810
New Hope Residential Care Inc.Park Hills, MO3010
Misty Mountain PWSSt Robert, MO7010
King City PWSKing City, MO1,10010
Happy Acres Trailer ParkSedalia, MO358
Circle C Mobile Home ParkPacific, MO758
Louisiana PWSLouisiana, MO3,3647
El Kay Lake View MotelCamdenton, MO257
Concordia PWSConcordia, MO2,5007
S K & M Water Company Inc.Perryville, MO7506
Grandview Plaza Mobile Home ParkDe Soto, MO1796
Archie PWSArchie, MO1,3006
Chamois PWSChamois, MO3966
Monroe City PWSMonroe City, MO2,4436
Melody Manor SubdivisionReeds Spring, MO406

Large utilities that accumulated/accrued the most violation points as of July 2021 to June 2024 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.

UtilityLocationPeople ServedViolation Points
KennettKennett, MO10,5001
Jackson County PWSD 2Raytown, MO16,4251
Lees SummitLees Summit, MO99,4001

Contaminants found in Missouri above health guidelines

Found above health guidelines Found
Contaminant # of Utilities People Served # of Utilities People Served
Total trihalomethanes (TTHMs)8535,120,0748675,163,754
Bromodichloromethane7594,761,8557935,075,990
Haloacetic acids (HAA5)6564,744,1396584,764,675
Chloroform5934,471,4468124,969,097
Dichloroacetic acid5334,381,9825394,464,583
Trichloroacetic acid4544,133,0424704,346,139
Haloacetic acids (HAA9)1654,109,0421684,144,120
Dibromochloromethane6783,730,0177414,090,950
Dibromoacetic acid5083,725,3135234,160,861
Chromium (hexavalent)1273,716,8541504,000,552
Nitrate & nitrite3252,951,1621,0244,950,406
Nitrate672,554,390962,687,860
Arsenic1932,274,3481932,274,348
Radium, combined (-226 & -228)4701,338,2024721,360,502
Bromoform185571,6794873,002,522
Bromochloroacetic acid4530,9114530,911
Radon11154,32411154,324
Chlorate9112,892632,155,556
Chlorite3399,1793399,179
Atrazine3284,5591162,704,469
Perfluorooctanoic acid (PFOA)1080,6471080,647
Cadmium3353,1464090,189
Tetrachloroethylene (perchloroethylene)1043,2961548,409
Perfluorohexane sulfonate (PFHXS)1035,9751035,975
Uranium, combined (pCi/L)2435,00159128,493
Perfluorooctane sulfonate (PFOS)821,701923,752
Methoxychlor210,415210,415
Bromate110,019110,019
Manganese76,1999445,059,552
Perfluoropentane sulfonic acid (PFPeS)12,05126,267
Thallium31,358634,485
Antimony115015575,134
Styrene160295
Chloromethane140140

Contaminants found in Missouri above legal limits

Contaminant # of Utilities People Served

What filter type is right for you?

Water
Contaminants

view utility

Carbon Filters

Can reduce the levels of many common contaminants.

pros

  • Lower upfront cost
  • Reduced maintenance

cons

  • Does not remove all contaminants

Reverse Osmosis

Most effective at reducing contaminants.

pros

  • Most effective

cons

  • Higher upfront cost
  • Requires more maintenance
  • Wastes water

Other Considerations

Ion Exchange

Pros: Softens hard water, Reduces some contaminants

Cons: Doesn't remove all contaminants

Whole-House Filters

Pros: Useful for reducing radiologicals and TCE

Cons: Expensive to install and maintain, Risk of bacterial contamination

Distillation

Pros: Removes heavy metals and harmful microbes

Cons: Does not reduce most contaminants

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