City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#3577
Springfield
County, GA
94 A
#3578 Springfield
County, TN
94 A
#3579 Springville
County, NY
94 A
#3580 St Francis
County, KS
94 A
#3581 St George
County, SC
94 A
#3582 St. Bonifacius
County, MN
94 A
#3583 St. Charles
County, MI
94 A
#3584 St. James
County, MN
94 A
#3585 St. Paul
County, MN
94 A
#3586 Stacy
County, MN
94 A
#3587 Stantonsburg
County, NC
94 A
#3588 Staples
County, MN
94 A
#3589 Star
County, ID
94 A
#3590 Statesboro
County, GA
94 A
#3591 Stayton
County, OR
94 A
#3592 Stennis Space Center
County, MS
94 A
#3593 Stephenville
County, TX
94 A
#3594 Stockton
County, KS
94 A
#3595 Storm Lake
County, IA
94 A
#3596 Stuart
County, VA
94 A
#3597 Sturgis
County, MI
94 A
#3598 Sublimity
County, OR
94 A
#3599 Sulphur
County, LA
94 A
#3600 Sumiton
County, AL
94 A
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.