City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#4585
Oshkosh
County, WI
91 A
#4586 Oxford
County, IN
91 A
#4587 Oxnard
County, CA
91 A
#4588 Park City
County, IL
91 A
#4589 Payson
County, UT
91 A
#4590 Pine Hill
County, NJ
91 A
#4591 Plattsburg
County, MO
91 A
#4592 Port Barre
County, LA
91 A
#4593 Portland
County, OR
91 A
#4594 Preston
County, MS
91 A
#4595 Proctor
County, VT
91 A
#4596 Rhinelander
County, WI
91 A
#4597 Richland
County, WA
91 A
#4598 Richland Center
County, WI
91 A
#4599 Riverdale
County, CA
91 A
#4600 Riverton
County, WY
91 A
#4601 Roanoke
County, VA
91 A
#4602 Rock Hall
County, MD
91 A
#4603 Roseville
County, OH
91 A
#4604 Russiaville
County, IN
91 A
#4605 Sacramento
County, CA
91 A
#4606 Sardis
County, MS
91 A
#4607 Sardis
County, OH
91 A
#4608 Schnecksville
County, PA
91 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.