City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#2761
St. Michael
County, ND
96 A
#2762 St. Paul Park
County, MN
96 A
#2763 Stafford
County, TX
96 A
#2764 Stafford
County, VA
96 A
#2765 Standish
County, MI
96 A
#2766 Staunton
County, VA
96 A
#2767 Sterrett
County, AL
96 A
#2768 Stevensville
County, MT
96 A
#2769 Stillwell
County, OK
96 A
#2770 Storrs
County, CT
96 A
#2771 Stoughton
County, WI
96 A
#2772 Stratford
County, TX
96 A
#2773 Strathmore
County, CA
96 A
#2774 Sturgis
County, SD
96 A
#2775 Suffern
County, NY
96 A
#2776 Sulligent
County, AL
96 A
#2777 Sullivans Island
County, SC
96 A
#2778 Sultan
County, WA
96 A
#2779 Summerfield
County, LA
96 A
#2780 Superior
County, MT
96 A
#2781 Surprise
County, AZ
96 A
#2782 Sutton
County, NE
96 A
#2783 Swanton
County, OH
96 A
#2784 Syracuse
County, IN
96 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.