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EWG's Tap Water Database — 2019 UPDATE

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Oklahoma

  • 941 Utilities

  • Serving: 3,622,000

  • Data available: 2012-2017

  • Contaminants Found: 71

 

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, OK49,347
Fort Sill HQUSAFACFSFort Sill, OK23,000
Glenpool WaterGlenpool, OK12,500
Grove Municipal Services Auth.Grove, OK11,890
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 April 2016 to March 2019 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
Hugo Municipal AuthorityHugo, OK5,536374
BarnsdallBarnsdall, OK1,243318
Pittsburg County Rural Water District #14Mcalester, OK1,680302
BeggsBeggs, OK1,364293
Otoe-missouria TribeRed Rock, OK250273
Nowata Municipal AuthorityNowata, OK3,971239
LoyalLoyal, OK81193
Canadian County Rural Water District # 1Calumet, OK750193
OkarcheOkarche, OK1,110192
Southern Okla Water CorpArdmore, OK11,250183
Stroud Utilities AuthorityStroud, OK2,811165
Sardis Lake Water AuthorityClayton, OK307164
HollisHollis, OK2,264162
PittsburgPittsburg, OK280159
Walnut Park EstatesPrue, OK42150
OkmulgeeOkmulgee, OK13,495146
HominyHominy, OK2,584142
Deer CreekDeer Creek, OK147138
Pecan Tree Estates AddnNoble, OK22137
MorrisMorris, OK1,440132
Muskogee County Rural Water District #3Council Hill, OK900129
TiptonTipton, OK916124
Mcintosh County Rural Water, Sewer & Solid Waste Management District #2 (onapa)Checotah, OK2,774119
Wanette Public Works AuthorityWanette, OK402115
Ryan Utilities AuthorityRyan, OK800115
HartshorneHartshorne, OK2,300114
Cherokee County Rural Water District #1 (Ft. Gibson)Fort Gibson, OK710112
Asher Utility Dev AuthorityAsher, OK375104
Tullahassee WaterTullahassee, OK106102
Elm Bend Rural Water District Inc.Ochelata, OK600102

Large utilities that accumulated/accrued the most violation points as of April 2016 to March 2019 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
Southern Okla Water CorpArdmore, OK11,250183
OkmulgeeOkmulgee, OK13,495146
AltusAltus, OK21,47786
Stillwater Water PlantStillwater, OK40,00059
MuskogeeMuskogee, OK38,31045
ArdmoreArdmore, OK24,28341
Shawnee Municipal AuthorityShawnee, OK29,99035
Grove Municipal Services Auth.Grove, OK11,89033
Rogers County RWD # 3 Cot StaClaremore, OK10,75017
Creek County RWD # 2Jenks, OK11,69516
Midwest CityMidwest City, OK55,93510
Tinker AFB Bio-env EngTinker Afb, OK24,6458
El RenoEl Reno, OK16,2127
Ponca City Mun WaterPonca City, OK27,1556
Jenks PWAJenks, OK16,9246
Sequoyah County Water AssociationSallisaw, OK13,4605
Tahlequah PWATahlequah, OK14,4585
WoodwardWoodward, OK15,0002
Bixby Public Works AuthorityBixby, OK18,7501
Sand SpringsSand Springs, OK18,7641

Contaminants found in Oklahoma above health guidelines

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

Total trihalomethanes (TTHMs)
8073,529,7358073,529,735

Dibromochloromethane
7753,486,3767833,497,493

Bromodichloromethane
7533,483,5107533,483,510

Chloroform
6523,332,1526923,421,090

Nitrate and nitrite
6933,132,7847783,367,026

Dichloroacetic acid
5783,101,7476213,318,413

Trichloroacetic acid
5002,789,9845302,911,673

Chromium (hexavalent)
1771,832,1462132,633,394

Bromoform
4491,820,8035922,933,093

Radium, combined (-226 & -228)
5501,688,3965521,697,390

Arsenic
1591,206,5871571,205,657

Chlorite
1131,102,3341211,286,883

Nitrate
1011,037,797981,035,872

Bromate
45907,58044907,503

Uranium
274730,375315861,129

Chlorate
46443,6891301,598,823

Vanadium
7230,2332092,630,951

Antimony
1132,57213139,569

Carbon tetrachloride
829,4061240,122

Tetrachloroethylene (perchloroethylene)
222,728424,913

Perfluorooctanoic acid (PFOA)
220,403220,403

Perfluorohexane sulfonate (PFHXS)
220,403220,403

Atrazine
1318,1151217,871

Strontium
111,4422202,695,509

Cadmium
36,58836,588

Trichloroethylene
12,086429,386

Vinyl chloride
21,94321,943

Benzene
11,84011,840

Manganese
11,1051529,029

Barium
13504612,058,343

Chlordane
175175

Contaminants found in Oklahoma above legal limits