North Shore Kauaʻi's luxury hotels both face Hanalei Bay's water quality challenge
Beach: Hanalei Bay (Puʻu Poa Beach section)
1 Hotel Hanalei Bay overlooks Hanalei Bay, which has been on the EPA's impaired waters list since 2004 due to elevated bacteria from the Hanalei River and extensive taro farming upstream. After any rain, bacteria levels can spike significantly.
Beach: Hanalei Bay (Puʻu Poa Beach section)
Note: The St. Regis Princeville has been rebranded as 1 Hotel Hanalei Bay. They are the same property at the same location on Hanalei Bay, sharing identical water quality conditions.
These are actually the same property — the St. Regis Princeville was rebranded as 1 Hotel Hanalei Bay. Both names refer to the same location overlooking Hanalei Bay. Hanalei Bay has a high bacteria risk rating (3/5) due to the Hanalei River, which carries bacteria from upstream taro farming and animal agriculture. The bay has been on the EPA's impaired waters list since 2004. On dry days, conditions can be beautiful, but after rain (which is frequent on the North Shore), bacteria levels spike. Despite the water quality concerns, the scenery and setting are among the most stunning in Hawaii.
Water quality risk ratings are based on publicly available data from the Hawaii Department of Health Clean Water Branch, EPA impaired waters database, USGS stream monitoring data, and geographic analysis of pollution sources (streams, cesspools, storm drains). Ratings are estimates and may change with conditions.
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⚠️ Important Disclaimer
Safe to Swim Hawaii is an independent project not affiliated with any hotel, resort, or the Hawaii DOH. Water quality ratings are estimates based on publicly available data — not real-time measurements.
Always verify conditions with the Hawaii DOH Clean Water Branch before swimming.
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