Honolulu
Yes. Tap water in Honolulu is low risk across 7 water systems. Meets federal drinking water standards.
7 official water systems are listed for this town. Each keeps its own rating.
Is it safe?
Hnl-windward-pearl Harbor
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 631,389 people.
Source water: groundwater.
Is it safe?
Kamehameha Schools
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 4,000 people.
Source water: groundwater.
Is it safe?
Mililani
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 50,573 people.
Source water: groundwater.
Is it safe?
The Queen's Medical Center
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 3,440 people.
Source water: groundwater.
Is it safe?
Waialee-sunset Beach
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 4,916 people.
Source water: groundwater.
Is it safe?
Waialua-haleiwa
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 9,996 people.
Source water: groundwater.
Is it safe?
Waipahu-ewa-waianae
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 217,479 people.
Source water: groundwater.
Source
US EPA Safe Drinking Water Information System.
Period covered: October 2023 to September 2026.
Covers community water systems serving 3,300 people or more. The rating uses health-based violations of federal drinking-water standards in the last three years, and whether those violations have been fixed. Each system is placed at a town it serves, so positions are approximate.
Common questions
Can I drink the tap water in Honolulu, Hawaii?
Yes. Tap water in Honolulu is low risk across 7 water systems. Meets federal drinking water standards.
Where do these ratings come from?
US EPA Safe Drinking Water Information System. Period covered: October 2023 to September 2026.