City Water Quality Rankings in California
601 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#529
South Gate
County, CA
82 B
#530 Trabuco Canyon
County, CA
82 B
#531 Winterhaven
County, CA
81 B
#532 Arvin
County, CA
80 B
#533 Los Angeles
County, CA
80 B
#534 Bakersfield
County, CA
79 B
#535 California City
County, CA
79 B
#536 Meadow Vista
County, CA
79 B
#537 Newport Beach
County, CA
79 B
#538 Dunsmuir
County, CA
78 B
#539 Gustine
County, CA
78 B
#540 Pismo Beach
County, CA
76 B
#541 Bishop
County, CA
74 C
#542 Chula Vista
County, CA
74 C
#543 Mt. Shasta
County, CA
74 C
#544 Murphys
County, CA
74 C
#545 Redding
County, CA
74 C
#546 Temecula
County, CA
74 C
#547 Coarsegold
County, CA
73 C
#548 Fort Bragg
County, CA
72 C
#549 Goleta
County, CA
72 C
#550 Orange Cove
County, CA
72 C
#551 Vacaville
County, CA
72 C
#552 Westmorland
County, CA
72 C
Frequently Asked Questions
How are city water quality rankings calculated in California?
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 cities in California?
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.