Hawaii
Water Quality Report
79 Good
Average Score
79/100
Water Systems
65
Population
1.5M
Violations
216 73 unresolved
Score Distribution
32 A
12 B
3 C
1 D
6 F
Lowest Scoring Water Systems
Counties in Hawaii
Cities in Hawaii
View all 18 cities →Popular City Comparisons in Hawaii
Quickly compare major cities in Hawaii by water quality score and grade.
Frequently Asked Questions
Is tap water in Hawaii safe to drink?
Hawaii has an average WaterQ score of 79/100 across 65 public water systems. Safety can vary by city and system, so check your local report for recent violations and contaminants.
How many water systems are in Hawaii?
WaterQ currently tracks 65 public water systems in Hawaii.
Where can I compare cities in Hawaii?
Use the city list below to open detailed reports, or visit the compare tool to benchmark two cities side-by-side on score, grade, and system coverage.