City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#5017
Stanwood
County, WA
90 A
#5018 Statham
County, GA
90 A
#5019 Steelville
County, MO
90 A
#5020 Stromsburg
County, NE
90 A
#5021 Terrell
County, TX
90 A
#5022 Tornillo
County, TX
90 A
#5023 Town Creek
County, AL
90 A
#5024 Tremont
County, MS
90 A
#5025 Troy
County, MO
90 A
#5026 Troy
County, TX
90 A
#5027 Tulia
County, TX
90 A
#5028 Tustin
County, CA
90 A
#5029 Tuxedo Park
County, NY
90 A
#5030 Tyler
County, MN
90 A
#5031 Tyngsborough
County, MA
90 A
#5032 Tyrone
County, NM
90 A
#5033 Union
County, OR
90 A
#5034 Urbandale
County, IA
90 A
#5035 Uriah
County, AL
90 A
#5036 Villa Park
County, CA
90 A
#5037 Villa Rica
County, GA
90 A
#5038 Wakeman
County, OH
90 A
#5039 Walden
County, NY
90 A
#5040 Walnut Grove
County, AL
90 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.