City Water Quality Rankings in Oklahoma
267 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#49
Durant
County, OK
72 C
#50 Jay
County, OK
72 C
#51 Marlow
County, OK
72 C
#52 Ringling
County, OK
72 C
#53 Stilwell
County, OK
72 C
#54 Tulsa
County, OK
72 C
#55 Cyril
County, OK
71 C
#56 Lawton
County, OK
71 C
#57 Braggs
County, OK
70 C
#58 Chelsea
County, OK
70 C
#59 Sperry
County, OK
70 C
#60 Tonkawa
County, OK
70 C
#61 Hobart
County, OK
68 C
#62 Muldrow
County, OK
68 C
#63 Ponca City
County, OK
68 C
#64 Wynnewood
County, OK
68 C
#65 Medford
County, OK
67 C
#66 Healdton
County, OK
66 C
#67 Jenks
County, OK
66 C
#68 Mannford
County, OK
65 C
#69 Sand Springs
County, OK
65 C
#70 Stillwater
County, OK
65 C
#71 Guymon
County, OK
64 C
#72 Broken Bow
County, OK
62 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.