#25 of 51A
California Water Quality
California ranks #25 out of 51 states for tap water quality with a score of 83.7 out of 100.
Summary
Overall Score
83.7
out of 100
Cities Tested
765
cities
Cities w/ Violations
573
75% of cities
Avg Contaminants
2.6
above guidelines
Population
237.0M
people affected
Best Cities in California
Pop: 92,058Score: 100
2Weed
Pop: 5,324Score: 100
Pop: 9,500Score: 100
Pop: 1,313Score: 100
Pop: 4,720Score: 100
Cities Needing Improvement
Pop: 115,588Score: 65
Pop: 109,414Score: 65
Pop: 276,918Score: 70
Pop: 84,462Score: 70
Pop: 96,657Score: 70
Cities listed have the lowest water quality scores in California.
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