City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#7369
San Saba
County, TX
80 B
#7370 Sandyville
County, WV
80 B
#7371 Sanford
County, NC
80 B
#7372 Sardis
County, TN
80 B
#7373 Saugus
County, MA
80 B
#7374 Sayreville
County, NJ
80 B
#7375 Scott
County, LA
80 B
#7376 Selma
County, NC
80 B
#7377 Seminary
County, MS
80 B
#7378 Sharpsburg
County, KY
80 B
#7379 Sheldon
County, MO
80 B
#7380 Shrewsbury
County, MA
80 B
#7381 Sibley
County, IA
80 B
#7382 Slatington
County, PA
80 B
#7383 Smithfield
County, RI
80 B
#7384 Smithville
County, TX
80 B
#7385 Snow Shoe
County, PA
80 B
#7386 Social Circle
County, GA
80 B
#7387 Soso
County, MS
80 B
#7388 South Amherst
County, OH
80 B
#7389 South Chicago Heights
County, IL
80 B
#7390 South Whitley
County, IN
80 B
#7391 Sparta
County, GA
80 B
#7392 Sparta
County, KY
80 B
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.