East Hawaii News

670K gallons of wastewater spews into Hilo Bay

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An estimated 607,000 gallons of non-chlorinated secondary treated effluent wastewater was discharged from the Hilo Wastewater Treatment Plant between about 8:15 a.m. and 12:30 p.m. June 21.

The discharge triggered a water quality advisory for a portion of Hilo Bay.

The discharge was caused by the failure of a chlorination system. Hawai‘i County Department of Environmental Management says the failure happened when the chlorine was being replenished.

Restoration of the system was completed at about 12:30 p.m. the same day.

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The Hawai‘i Department of Health was notified and issued a water quality advisory for Hilo Bay, outside of the Hilo breakwater.

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