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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#193
Caddo
County, OK
0 F
#194
Calera
County, OK
0 F
#195
Chandler
County, OK
0 F
#196
Chattanooga
County, OK
0 F
#197
Checotah
County, OK
0 F
#198
Chickasha
County, OK
0 F
#199
Choctaw
County, OK
0 F
#200
Clayton
County, OK
0 F
#201
Clinton
County, OK
0 F
#202
Coalgate
County, OK
0 F
#203
Coffeyville
County, OK
0 F
#204
Colbert
County, OK
0 F
#205
Cookson
County, OK
0 F
#206
Cordell
County, OK
0 F
#207
Council Hill
County, OK
0 F
#208
Crowder
County, OK
0 F
#209
Davis
County, OK
0 F
#210
Dewey
County, OK
0 F
#211
Duncan
County, OK
0 F
#212
Fairfax
County, OK
0 F
#213
Fairview
County, OK
0 F
#214
Frederick
County, OK
0 F
#215
Geary
County, OK
0 F
#216
Grandfield
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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