Second consecutive wastewater spill into Lake Wilson

The city’s Department of Environmental Services responded on Sunday to a wastewater treatment plant spill in Wahiawa.

The spill, which occurred at 12:34 p.m., was reported by the treatment plant. It occurred when a power flicker caused a failure in the facility’s ultraviolet disinfection system, leaving the system offline for less than two minutes.

An estimated 1,875 gallons of partially treated wastewater was discharged from the plant into Lake Wilson.

The state Department of Health was notified, and warning signs will be posted in the area.

The public is advised to stay out of the affected waterways until the signs have been taken down.

This comes a week after a spill from the same wastewater treatment plant, which occurred during a thunderstorm.

On May 25, about 1,500 gallons of partially treated wastewater went into the Wahiawa reservoir.

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