Hawaii Water Quality Report
Tap water quality data for 2 cities in Hawaii, updated 2026.
US average: 100 ppm
2 of 2 cities violation-free
2 cities tested
2 water systems tracked
Cleanest Tap Water in Hawaii
Cities with the fewest water quality issues
No cities in Hawaii have recorded water quality violations in the past 3 years.
Hawaii Tap Water: What You Need to Know
Hawaii has 2 tracked water utilities serving approximately 854K residents.
No cities in Hawaii have recorded water quality violations in the past 3 years — an excellent compliance record. All 2 tested cities have lead levels below the EPA action level of 15 ppb.
Frequently Asked Questions About Hawaii Water
Is tap water safe to drink in Hawaii?
Based on available EPA data, no cities in Hawaii have recorded water quality violations in the past 3 years. However, water quality can vary by building — older homes may have lead pipes. Consider testing your water at home for complete peace of mind.
Which city in Hawaii has the cleanest tap water?
Based on EPA violation data, lead testing, and water quality metrics, Honolulu-windward-pearlharbor ranks as having the cleanest tap water in Hawaii. It has zero violations in the past 3 years and lead levels well below the EPA action level.
Where does Hawaii get its water from?
The majority of Hawaii's water systems (0%) use surface water as their primary source. Surface water comes from rivers, lakes, and reservoirs. Each city's specific source can vary — check individual city reports for details.