City Water Quality Rankings
11,561 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#11473
St Rose
County, IL
0 F
#11474 St. Cloud
County, FL
0 F
#11475 Staunton
County, IL
0 F
#11476 Steeleville
County, IL
0 F
#11477 Sterlington
County, LA
0 F
#11478 Stevenson
County, AL
0 F
#11479 Stigler
County, OK
0 F
#11480 Stone Harbor
County, NJ
0 F
#11481 Stratton Mountain
County, VT
0 F
#11482 Streetman
County, TX
0 F
#11483 Stringtown
County, OK
0 F
#11484 Stroud
County, OK
0 F
#11485 Sturgis
County, KY
0 F
#11486 Sugar Grove
County, VA
0 F
#11487 Sunland Park
County, NM
0 F
#11488 Surf City
County, NJ
0 F
#11489 Surfside Beach
County, TX
0 F
#11490 Swiss
County, WV
0 F
#11491 Talcott
County, WV
0 F
#11492 Talihina
County, OK
0 F
#11493 Tallulah
County, LA
0 F
#11494 Tamaqua
County, PA
0 F
#11495 Tarentum
County, PA
0 F
#11496 Tatum
County, TX
0 F
Frequently Asked Questions
How are city water quality rankings calculated?
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 US cities directly?
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.