City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#4609
Shawnee On Delaware
County, PA
91 A
#4610 Sheboygan
County, WI
91 A
#4611 Siloam Springs
County, AR
91 A
#4612 Simi Valley
County, CA
91 A
#4613 Spring
County, TX
91 A
#4614 Spring City
County, PA
91 A
#4615 Springville
County, AL
91 A
#4616 St. Joe
County, IN
91 A
#4617 Stillwater
County, NY
91 A
#4618 Stowell
County, TX
91 A
#4619 Stratford
County, WI
91 A
#4620 Sugar Creek
County, MO
91 A
#4621 Sunset
County, LA
91 A
#4622 Tahoka
County, TX
91 A
#4623 Taylorsville
County, UT
91 A
#4624 Tempe
County, AZ
91 A
#4625 Thomaston
County, GA
91 A
#4626 Two Rivers
County, WI
91 A
#4627 Union Grove
County, WI
91 A
#4628 Uniontown
County, AL
91 A
#4629 Unionville
County, MO
91 A
#4630 Vashon
County, WA
91 A
#4631 Vevay
County, IN
91 A
#4632 Vidalia
County, LA
91 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.