waterbycounty

Oklahoma Water Quality

Drinking water data for all 77 counties.

Avg Water Score

95.6

State Grade

A

Counties with Data

77

of 77 total

All Oklahoma Counties

CountyWater Score
Harper County100.0
Love County100.0
Oklahoma County100.0
Tulsa County100.0
Beckham County99.9
Pontotoc County99.9
Woodward County99.9
Mayes County99.8
Texas County99.8
Woods County99.8
Cimarron County99.7
Cleveland County99.7
Comanche County99.7
Custer County99.7
Garfield County99.7
Harmon County99.7
Logan County99.7
McClain County99.7
Ottawa County99.7
Creek County99.6
Ellis County99.6
Beaver County99.5
Payne County99.4
Adair County99.3
Sequoyah County99.3
Rogers County99.2
Canadian County98.9
Kay County98.9
Grady County98.8
Stephens County98.7
Washington County98.7
Washita County98.7
Carter County98.6
Dewey County98.6
Murray County98.6
Delaware County98.5
Blaine County98.3
Craig County98.2
Alfalfa County98.1
Bryan County97.9
Johnston County97.8
Roger Mills County97.6
Cherokee County97.3
Okfuskee County97.3
Marshall County96.9
Pottawatomie County96.9
Kiowa County96.0
Wagoner County95.9
Greer County95.6
Muskogee County95.5
Jackson County95.4
Grant County95.3
Noble County95.3
Caddo County95.2
Coal County95.0
Lincoln County94.6
Le Flore County94.4
Kingfisher County94.1
Okmulgee County93.7
Garvin County93.6
Hughes County93.5
McCurtain County92.8
McIntosh County92.7
Pittsburg County92.4
Cotton County89.9
Tillman County88.5
Major County88.4
Seminole County88.3
Latimer County87.4
Jefferson County86.9
Pawnee County86.8
Nowata County85.2
Atoka County83.6
Osage County82.5
Haskell County81.3
Pushmataha County79.4
Choctaw County76.4

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Data Source

Water quality data sourced from the EPA Safe Drinking Water Information System (SDWIS) via the ECHO enforcement database. Scores reflect compliance history and health-based violation counts.

Disclaimer: This data is informational only. It is not health, legal, or professional advice. For concerns about your specific water supply, contact your local water utility.

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