What to know before you go
South swells can enter the harbor, adding wave hazards to the bacteria problem
Calm water conditions but bacteria levels are consistently unsafe
| Lifeguards | No |
| Nearest Hospital | Wilcox Medical Center (2 mi) |
| Cell Coverage | Excellent |
| Emergency | Call 911 — Ocean Safety: (808) 723-8170 |
Anyone with open wounds, compromised immune systems, children, and anyone who does not want to be exposed to fecal bacteria. Despite being next to the Marriott, the water quality data is alarming.
After heavy rain, bacteria and pollutants from runoff contaminate coastal waters. Wait at least 72 hours after heavy rain and until the water clears before entering. This applies to Kalapaki Beach and every beach in Hawaiʻi.
Worst bacteria in state — every sample exceeds limits. Harbor runoff. Nawiliwili Stream contamination. Resort beach with terrible water quality.
No. Nearest hospital: Wilcox Medical Center (2 mi). Cell phone coverage: Excellent.
Winter: South swells can enter the harbor, adding wave hazards to the bacteria problem. Summer: Calm water conditions but bacteria levels are consistently unsafe
Anyone with open wounds, compromised immune systems, children, and anyone who does not want to be exposed to fecal bacteria. Despite being next to the Marriott, the water quality data is alarming.
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⚠️ Important Disclaimer
Safe to Swim Hawaii is an independent passion project — it is not affiliated with the Hawaii Department of Health, any entity mentioned on this page, or any government agency or hotel brand. Water quality ratings on this site are estimates based on publicly available testing data and geographic analysis. They are not real-time measurements and may not reflect current conditions.
Always verify current water quality conditions with the Hawaii Department of Health Clean Water Branch before entering the water. This site is for informational purposes only and should not be the sole basis for any swimming decisions.
When in doubt, donʻt go out. 🤙