Hawaii Travel Advice > Health & Safety
Yes, it is safe to drink and use tap water on the island of Oahu including in Waikiki.
The Board of Water Supply in Hawaii works in conjunction with State and Federal agencies, such as the U.S Environmental Protection Agency and Hawaii State Department of Health, to ensure the water in Hawaii is safe to drink.
Note, fluoride is not added to the water supply in Hawaii (only on military installations). Hawaii’s water supply is chlorinated, but only enough chlorine is added to keep disease-causing bacteria from contaminating the system. The pH balance of Hawaii’s drinking water occurs naturally between 7 to 8, it ranges from being neither acidic nor alkaline (pH7) to being slightly alkaline (pH8).
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