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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 2014 to September 2017 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
Eufaula Public Works AuthorityEufaula, OK4,462344
Wewoka Public Works AuthorityWewoka, OK3,450336
AlineAline, OK214260
GrandfieldGrandfield, OK1,110245
Canadian County Rural Water District # 1Calumet, OK750192
GearyGeary, OK1,258191
Okarche Rural Water District Inc.Okarche, OK250191
OkarcheOkarche, OK1,110190
LoyalLoyal, OK81184
Osage County Rural Water District # 20 (hulah)Bartlesville, OK350175
Major County Rural Water District #1Fairview, OK1,000171
BarnsdallBarnsdall, OK1,243169
Weleetka Public Utilities AuthorityWeleetka, OK1,014168
HollisHollis, OK2,264150
Carmen Public Works AuthorityCarmen, OK411150
Stroud Utilities AuthorityStroud, OK2,811150
OkmulgeeOkmulgee, OK13,495141
TalihinaTalihina, OK1,297138
Sardis Lake Water AuthorityClayton, OK307136
Cleveland Municipal AuthorityCleveland, OK3,262131
Deer CreekDeer Creek, OK147118
Hugo Municipal AuthorityHugo, OK5,536112
HoldenvilleHoldenville, OK4,732110
Southern Okla Water CorpArdmore, OK11,250105
Cotton County Rural Water District #2Walters, OK2,000105
North Blaine Water CorporationOkeene, OK960101
Eakly Development CorporationEakly, OK27797
Muskogee County Rural Water District #6Wainwright, OK2,55096
Okmulgee County Rural Water District #1Schulter, OK1,89095
Otoe-missouria TribeRed Rock, OK25094

Large utilities that accumulated/accrued the most violation points as of October 2014 to September 2017 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, OK13,495141
Southern Okla Water CorpArdmore, OK11,250105
Duncan Public Utilities AuthorityDuncan, OK23,00085
ClaremoreClaremore, OK15,87365
McAlester PWAMcalester, OK17,78351
SapulpaSapulpa, OK19,70235
MuskogeeMuskogee, OK38,31030
Wagoner County Rwd #4Broken Arrow, OK25,79223
Grove Municipal Services Auth.Grove, OK11,00020
Shawnee Municipal AuthorityShawnee, OK29,99012
Stillwater Water PlantStillwater, OK40,0008
MooreMoore, OK41,1387
Ponca City Mun WaterPonca City, OK27,1556
ArdmoreArdmore, OK24,2835
Tahlequah PWATahlequah, OK14,4585
Chickasha Municipal AuthorityChickasha, OK16,0365
Tinker AFB Bio-env EngTinker Afb, OK24,6453
MiamiMiami, OK13,7043
Rogers County RWD # 5Claremore, OK11,7822
El RenoEl Reno, OK16,2122
NormanNorman, OK70,1331
Jenks PWAJenks, OK16,9241
TulsaTulsa, OK471,0001
EnidEnid, OK47,9501
OwassoOwasso, OK23,0001
WeatherfordWeatherford, OK10,8331
WoodwardWoodward, OK15,0001
YukonYukon, OK22,4981

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

Bromodichloromethane
7853,413,0307943,425,630

Dibromochloromethane
7573,292,0477903,434,532

Chloroform
7113,266,8737363,315,907

Dichloroacetic acid
6523,117,6056583,222,475

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

Chlorite
1141,088,0831431,286,866

Bromate
41843,94641843,946

Uranium
301803,449331851,061

Chlorate
69464,7471751,623,873

Bromoform
155397,1774812,685,385

Arsenic
90353,20690353,206

Vanadium
12230,0612912,670,567

Nitrate and nitrite
139188,6947623,135,100

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