City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#6553
Random Lake
County, WI
84 B
#6554 Ray Brook
County, NY
84 B
#6555 Red Lake Falls
County, MN
84 B
#6556 Remerton
County, GA
84 B
#6557 Richlands
County, NC
84 B
#6558 Richmond
County, TX
84 B
#6559 Ridgefield
County, CT
84 B
#6560 Rienzi
County, MS
84 B
#6561 Rio Rancho
County, NM
84 B
#6562 Riverdale
County, UT
84 B
#6563 Riverton
County, IL
84 B
#6564 Rosebud
County, SD
84 B
#6565 Rupert
County, WV
84 B
#6566 Salem
County, OR
84 B
#6567 Salem City
County, NJ
84 B
#6568 Sand Fork
County, WV
84 B
#6569 Santa Rosa
County, NM
84 B
#6570 Sardis
County, GA
84 B
#6571 Saukville
County, WI
84 B
#6572 Seaford
County, DE
84 B
#6573 Seymour Johnson
County, NC
84 B
#6574 Shamokin
County, PA
84 B
#6575 Sheffield
County, IA
84 B
#6576 Shorewood
County, MN
84 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.