The City’s Department of Environmental Services responded late Thursday night to a force main break in the Ko Olina area.
Officials say more than 1,000 gallons of raw, untreated wastewater entered a storm drain that empties near Ko Olina Resort.
The 16-inch force main break is located at the City’s West Beach No. 1 Wastewater Pump Station at 2750 Aliinui Drive.
Crews have contained the spill and contacted agencies to repair the break.
The Department of Health has been notified.
Warning signs have been posted in the area and water sampling is being conducted.