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Updated: 02/01/2025
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Unpermitted Wastewater Discharge at Kailua Regional Wastewater Treatment Plant, O‘ahu

First Detected: 01/29/2025
Sign Removed: 01/31/2025
Closed: 02/01/2025
Cause: Undetermined but possibly due to heavy rain. Under investigation

The public is advised to avoid waters near the City and County of Honolulu Kailua Wastewater Treatment Plant's ocean outfall due to a discharge of wastewater that exceeded the daily maximum permitted fecal indicator bacteria level. Affected waters: Kailua Bay, Oahu Exceedance was discovered during daily sampling by the City on January 27, 2025. The City has posted warning signs and will conduct daily sampling. The public is advised to remain out of the affected waters until further notice. For more information, please see: https://eha-cloud.doh.hawaii.gov/cwb#!/event/1872/details/view

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