City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#4297
Santa Cruz
County, CA
92 A
#4298 Sauk City
County, WI
92 A
#4299 Savannah
County, GA
92 A
#4300 Schuylkill Haven
County, PA
92 A
#4301 Scobey
County, MT
92 A
#4302 Scotia
County, NY
92 A
#4303 Scotland Neck
County, NC
92 A
#4304 Screven
County, GA
92 A
#4305 Scriba
County, NY
92 A
#4306 Sea Isle City
County, NJ
92 A
#4307 Seabrook
County, NH
92 A
#4308 Seaside
County, OR
92 A
#4309 Shafer
County, MN
92 A
#4310 Sharpsville
County, PA
92 A
#4311 Siler City
County, NC
92 A
#4312 Simpsonville
County, KY
92 A
#4313 Singer
County, LA
92 A
#4314 Sleepy Hollow
County, IL
92 A
#4315 Sleepy Hollow
County, NY
92 A
#4316 Slocomb
County, AL
92 A
#4317 Snead
County, AL
92 A
#4318 Somerville
County, OH
92 A
#4319 Somerville
County, TX
92 A
#4320 Sonora
County, CA
92 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.