Water quality status and bacteria risk rating
📍 North Shore hub town, about 1 hour from Waikiki
Haleiwa Beach Park has moderate bacteria risk due to its proximity to Haleiwa Harbor and the Anahulu River. These water sources can carry significant runoff, especially after rain. The beach is more sheltered than open North Shore beaches, which means slower flushing and higher bacteria risk.
Haleiwa Beach has a higher bacteria risk than other popular North Shore spots like Sunset Beach or Pipeline. The harbor area and river mouth create conditions where runoff can linger. After rain, this beach should be avoided for longer than the standard 72 hours. During extended dry weather, conditions improve significantly.
Based on: DOH beach monitoring, Anahulu River discharge, harbor proximity, sheltered shoreline
The Department of Health recommends staying out of the ocean for at least 72 hours after heavy rain. At Haleiwa Beach, this is especially important. The Anahulu River collects runoff from a large watershed and deposits it directly near the swimming area. The sheltered harbor area means bacteria can linger longer than at open-ocean beaches. Consider waiting even longer than 72 hours after heavy storms.
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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 or any government agency. 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. “No DOH Alerts” means no advisory is currently posted — it does not mean the water was tested and found safe. DOH only monitors a fraction of Hawaii’s beaches, and some areas have no regular testing at all.
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.
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