City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#5593
Strong
County, AR
88 B
#5594 Sunapee
County, NH
88 B
#5595 Sunset Valley
County, TX
88 B
#5596 Sutton
County, WV
88 B
#5597 Swainsboro
County, GA
88 B
#5598 Swan Quarter
County, NC
88 B
#5599 Taos
County, NM
88 B
#5600 Taunton
County, MA
88 B
#5601 Temple
County, GA
88 B
#5602 Thompson
County, ND
88 B
#5603 Thorntown
County, IN
88 B
#5604 Three Rivers
County, MI
88 B
#5605 Tipton
County, MO
88 B
#5606 Tonganoxie
County, KS
88 B
#5607 Tonopah
County, AZ
88 B
#5608 Tripoli
County, IA
88 B
#5609 Troy
County, AL
88 B
#5610 Troy
County, MT
88 B
#5611 Trumann
County, AR
88 B
#5612 Unicoi
County, TN
88 B
#5613 Union Grove
County, AL
88 B
#5614 University Park
County, PA
88 B
#5615 Vail
County, CO
88 B
#5616 Valhalla
County, NY
88 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.