Is Honolulu Tap Water Safe To Drink?

Yes! The tap water is safe to drink.

Tap water in Honolulu is generally safe to drink, meeting or exceeding EPA drinking water standards. The City and County of Honolulu regularly tests water quality.

Water Sources
Drinking Fountains

It undergoes treatment processes including filtration and disinfection to ensure safety from contaminants. Results are publicly reported in annual water quality reports.

Some individuals may notice a chlorine taste or odor, but this does not affect safety. If concerned, using a certified home filter can improve taste and odor.

Last checked: 2025-06-27

Source of Water in Honolulu, United States

Honolulu's tap water primarily comes from groundwater sources, including underground aquifers replenished by rainfall. These aquifers supply the majority of the city's water.

Surface water from reservoirs on Oahu also contributes to the water supply, collected during rainy seasons and stored for distribution.

The Department of Water Supply manages these sources, ensuring sustainable use and protection from contamination to maintain safe drinking water standards.

Honolulu Drinking Fountains

Public drinking fountains in Honolulu are generally safe, supplied by the city's treated tap water meeting EPA standards.

Routine maintenance and cleaning are performed to reduce contamination risks, but occasional issues like microbial buildup can occur.

Users should avoid direct mouth contact with fountains and report any visible damage or water quality concerns to local authorities.

Drinking Water Map

Here is a map showing all the locations of drinking water spots in Honolulu. You can click on each water drop to open the spot directly in Google Maps for directions.

Nearby Places

About the Author

Hi, I'm Emily Hartman, a researcher and water quality specialist with a background in public health.

I've spent the last few years studying how everyday water systems impact our health, and I'm passionate about making that information clear and useful for everyone.

Safe, clean tap water isn't just my job — it's something I truly care about.

Disclaimer

* The information provided on this website regarding the safety of tap water in Honolulu is sourced from reputable sources such as the World Health Organization (WHO), local water authorities, and the Environmental Performance Index (EPI) from Yale University. While we strive to ensure accuracy and reliability, it's important to note that water quality can vary over time and may be subject to factors beyond our control. Users are encouraged to verify the current water quality status with local authorities or consult additional resources before making decisions regarding water consumption. We disclaim any liability for actions taken based on the information provided on this website.