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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#49
Collinsville
County, OK
76 B
#50
Meeker
County, OK
76 B
#51
Midwest City
County, OK
76 B
#52
Tonkawa
County, OK
76 B
#53
Jay
County, OK
75 B
#54
Owasso
County, OK
74 C
#55
Thackerville
County, OK
74 C
#56
Waukomis
County, OK
74 C
#57
Braggs
County, OK
72 C
#58
Carter
County, OK
72 C
#59
Ringling
County, OK
72 C
#60
Bixby
County, OK
71 C
#61
Cyril
County, OK
71 C
#62
Adair
County, OK
70 C
#63
Chelsea
County, OK
70 C
#64
Guymon
County, OK
70 C
#65
Marshall
County, OK
70 C
#66
Sperry
County, OK
70 C
#67
Medford
County, OK
69 C
#68
Ochelata
County, OK
69 C
#69
Ponca City
County, OK
69 C
#70
Tulsa
County, OK
69 C
#71
Commerce
County, OK
68 C
#72
Hobart
County, OK
68 C

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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