City Water Quality Rankings
11,561 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#9769
New Brunswick
County, NJ
51 D
#9770 New Port Richey
County, FL
51 D
#9771 Parowan
County, UT
51 D
#9772 Poth
County, TX
51 D
#9773 Preston
County, ID
51 D
#9774 Round Lake Beach
County, IL
51 D
#9775 Sarcoxie
County, MO
51 D
#9776 Senath
County, MO
51 D
#9777 Sonora
County, TX
51 D
#9778 Spring Valley
County, NY
51 D
#9779 Texarkana
County, TX
51 D
#9780 Wauseon,
County, OH
51 D
#9781 Western Springs
County, IL
51 D
#9782 Winona
County, TX
51 D
#9783 Adel
County, IA
50 D
#9784 Anamosa
County, IA
50 D
#9785 Astor
County, FL
50 D
#9786 Bay St Louis
County, MS
50 D
#9787 Bedford
County, IA
50 D
#9788 Bernardston
County, MA
50 D
#9789 Billerica
County, MA
50 D
#9790 Boulder City
County, NV
50 D
#9791 Carthage
County, TN
50 D
#9792 Cedar Knolls
County, NJ
50 D
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.