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EWG's Tap Water Database

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Oklahoma

  • 1,066 Utilities

  • Serving: 3,633,000

  • Data available: 2010-2015

  • Contaminants Found: 77

 

EWG's drinking water quality report for Oklahoma shows results of tests conducted by the water utilities in Oklahoma and provided to EWG by the Oklahoma Department of Environmental Quality.

LARGE UTILITIES
ALL UTILITIES WITH VIOLATIONS
LARGE UTILITIES WITH VIOLATIONS

Below are utilities in Oklahoma 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 Oklahoma

UtilityLocationPeople
Served
AdaAda, OK22,600
AltusAltus, OK21,477
ArdmoreArdmore, OK24,283
BartlesvilleBartlesville, OK34,748
BethanyBethany, OK20,307
Bixby Public Works AuthorityBixby, OK18,750
Broken Arrow Municipal AuthorityBroken Arrow, OK98,850
Chickasha Municipal AuthorityChickasha, OK16,036
City of Edmond - Arcadia LakeArcadia, OK77,616
ClaremoreClaremore, OK15,873
Creek County RWD # 2Jenks, OK11,695
Del CityDel City, OK22,128
Duncan Public Utilities AuthorityDuncan, OK23,000
DurantDurant, OK15,545
El RenoEl Reno, OK16,212
Elk CityElk City, OK10,510
EnidEnid, OK47,950
Fort Sill HQUSAFACFSFort Sill, OK23,000
Glenpool WaterGlenpool, OK12,500
Grove Municipal Services Auth.Grove, OK11,000
GuymonGuymon, OK11,442
Jenks PWAJenks, OK16,924
LawtonMedicine Park, OK92,757
Marshall County Water CorpMadill, OK14,717
McAlester PWAMcalester, OK17,783
MiamiMiami, OK13,704
Midwest CityMidwest City, OK55,935
MooreMoore, OK41,138
MuskogeeMuskogee, OK38,310
MustangMustang, OK15,435
More

Utilities that accumulated/accrued the most violation points as of October 2015 to September 2018 in Oklahoma

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
Served
Violation
Points
Wewoka Public Works AuthorityWewoka, OK3,450373
Eufaula Public Works AuthorityEufaula, OK4,462286
AlineAline, OK214280
GrandfieldGrandfield, OK1,110280
Otoe-missouria TribeRed Rock, OK250215
BarnsdallBarnsdall, OK1,243212
GearyGeary, OK1,258200
Okarche Rural Water District Inc.Okarche, OK250200
Canadian County Rural Water District # 1Calumet, OK750200
OkarcheOkarche, OK1,110200
LoyalLoyal, OK81184
Major County Rural Water District #1Fairview, OK1,000180
Weleetka Public Utilities AuthorityWeleetka, OK1,014171
HollisHollis, OK2,264170
TalihinaTalihina, OK1,297165
Stroud Utilities AuthorityStroud, OK2,811162
Carmen Public Works AuthorityCarmen, OK411160
Osage County Rural Water District # 20 (hulah)Bartlesville, OK350155
Cleveland Municipal AuthorityCleveland, OK3,262145
BeggsBeggs, OK1,364140
Hugo Municipal AuthorityHugo, OK5,536122
OkmulgeeOkmulgee, OK13,495117
Southern Okla Water CorpArdmore, OK11,250110
CheyenneCheyenne, OK778105
Deer CreekDeer Creek, OK147103
HominyHominy, OK2,584100
Duncan Public Utilities AuthorityDuncan, OK23,000100
Muskogee County Rural Water District #3Council Hill, OK90097
Mcintosh County Rural Water, Sewer & Solid Waste Management District #2 (onapa)Checotah, OK2,77496
FairfaxFairfax, OK1,55596

Large utilities that accumulated/accrued the most violation points as of October 2015 to September 2018 in Oklahoma

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
Served
Violation
Points
OkmulgeeOkmulgee, OK13,495117
Southern Okla Water CorpArdmore, OK11,250110
Duncan Public Utilities AuthorityDuncan, OK23,000100
ClaremoreClaremore, OK15,87375
McAlester PWAMcalester, OK17,78347
MuskogeeMuskogee, OK38,31045
Wagoner County Rwd #4Broken Arrow, OK25,79211
Stillwater Water PlantStillwater, OK40,0008
Shawnee Municipal AuthorityShawnee, OK29,9903
WeatherfordWeatherford, OK10,8333
WoodwardWoodward, OK15,0001
El RenoEl Reno, OK16,2121
Elk CityElk City, OK10,5101
MooreMoore, OK41,1381
Bixby Public Works AuthorityBixby, OK18,7501

Contaminants found in Oklahoma above health guidelines

Found above health guidelinesFound
Contaminant# of UtilitiesPeople Served# of UtilitiesPeople Served

Total trihalomethanes (TTHMs)
8323,468,9668393,476,352

Dibromochloromethane
7883,429,7317903,434,532

Bromodichloromethane
7943,425,6307943,425,630

Chloroform
7313,305,5807363,315,907

Dichloroacetic acid
6523,117,6056583,222,475

Nitrate and nitrite
7282,950,6767623,135,100

Trichloroacetic acid
5702,795,1535772,853,709

Chromium (hexavalent)
2301,854,7972902,670,644

Radium-228
5441,494,8235501,502,638

Radium-226
4871,345,3935301,517,428

Bromoform
4281,278,5884812,685,385

Chlorite
1141,088,0831431,286,866

Nitrate
60972,29960972,299

Bromate
41843,94641843,946

Uranium
301803,449331851,061

Chlorate
69464,7471751,623,873

Arsenic
90353,20690353,206

Vanadium
12230,0612912,670,567

Antimony
1332,43819137,690

Tetrachloroethylene (perchloroethylene)
222,728222,728

Perfluorooctanoic acid (PFOA)
420,495420,495

Perfluorohexane sulfonate (PFHXS)
420,495420,495

Atrazine
913,176913,176

Strontium
311,5623052,738,047

Trichloroethylene
12,086328,831

Benzene
11,79011,790

Manganese
11,105922,416

Carbon tetrachloride
18451845

Barium
13503121,138,892

Cadmium
12251225

Styrene
11701170

Chlordane
175175

Contaminants found in Oklahoma above legal limits