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DOH: Wastewater Discharge Enters Hilo Bay

July 5, 2022, 2:44 PM HST
* Updated July 5, 4:23 PM
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Approximately 3,000 gallons of wastewater discharge entered into Hilo Bay Monday evening, the Department of Health reported.

According to the DOH, discharge occurred at 261 Waianueanue Avenue when the wastewater entered nearby storm drain, which empties into Hilo Bay.

Hawaii County’s Hawai‘i Department of Environmental Management confirmed the release of an estimated 3,600 gallons of wastewater onto Waiānuenue Avenue, near the ʻUlulani Street intersection in Hilo, between noon and 6 p.m. on July 4.

The wastewater overflowed from the building and sewer cleanout at 261 Waianuenue Ave. The overflow entered a storm drain inlet at the corner of Waianuenue Avenue and Kinoole Street, which is connected to the storm drain system that discharges into Hilo Bay.

DEM-Wastewater Division has determined that the cause of the overflow is related to the accumulation of debris in the collection system, which then caused wastewater to back up until it overflowed from the building and sewer cleanout onto Waianuenue Avenue.

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Responding crews removed the accumulated debris to release the blockage and resume normal flow. They cleaned and disinfected Waiānuenue Avenue from the point of the spill to the storm drain.

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Warning signs have been posted at the shoreline entry points, and shoreline samples have been collected for laboratory analysis.

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