Water quality & swim conditions — West Oʻahu
📍 Barbers Point / Kalaeloa, West Oʻahu — near Ko Olina
The Barbers Point / Nimitz Beach area generally has reasonable water quality for West Oʻahu. The West Side lacks the intense urban density of Honolulu, reducing typical bacteria sources. The open south-facing coast benefits from Pacific flushing.
The area's industrial history as a former naval air station and fuel storage site means there may be historical contaminants in the area, though ocean water quality from bacteria testing is generally acceptable. The nearby Ewa Beach area has some agricultural and residential stormwater runoff risk after rain.
Based on: West O'ahu location, DOH area monitoring, former industrial site proximity
The Department of Health recommends 72 hours after heavy rain before ocean entry. West Oʻahu has multiple drainage channels that can spike bacteria after storms.
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Safe to Swim Hawaii is an independent passion project — not affiliated with the Hawaii Department of Health or any government agency. Ratings are estimates, not real-time measurements.
Always verify with the Hawaii Department of Health Clean Water Branch before entering the water.
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