WaterQ

City Water Quality Rankings in Oklahoma

272 cities ranked by drinking water quality.

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Popular city water quality comparisons

Erick, OK vs Quapaw, OK Compare → Seminole, OK vs Wyandotte, OK Compare → Allen, OK vs Concho, OK Compare → Stillwell, OK vs Tinker Afb, OK Compare →

Trending Cities

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#217
Grant
County, OK
0 F
#218
Harrah
County, OK
0 F
#219
Hartshorne
County, OK
0 F
#220
Haworth
County, OK
0 F
#221
Heavener
County, OK
0 F
#222
Holdenville
County, OK
0 F
#223
Hollis
County, OK
0 F
#224
Hominy
County, OK
0 F
#225
Hugo
County, OK
0 F
#226
Idabel
County, OK
0 F
#227
Kellyville
County, OK
0 F
#228
Kingfisher
County, OK
0 F
#229
Konawa
County, OK
0 F
#230
Krebs
County, OK
0 F
#231
Langston
County, OK
0 F
#232
Laverne
County, OK
0 F
#233
Madill
County, OK
0 F
#234
Maysville
County, OK
0 F
#235
Moore
County, OK
0 F
#236
Morris
County, OK
0 F
#237
Mounds
County, OK
0 F
#238
Nichols Hills
County, OK
0 F
#239
Oilton
County, OK
0 F
#240
Okarche
County, OK
0 F

Frequently Asked Questions

How are city water quality rankings calculated in Oklahoma?

WaterQ city rankings are based on EPA SDWIS data across local public water systems, including contaminant detections, compliance violations, and recency-weighted score signals.

Can I compare two cities in Oklahoma?

Yes. Use the city comparison links on this page or open the Compare tool to evaluate two cities side by side on score, grade, and water system coverage.

How often does WaterQ refresh city data?

City-level metrics refresh when new EPA data is processed. Check city pages for latest score and violation context.

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