The city Department of Environmental Services said more than 1,000 gallons of raw and untreated wastewater was discharged during a nearly three-hour period Thursday night into Paradise Cove at Ko Olina resort because of a 16-inch main break.

Warning signs were posted between Paradise Cove to Honu Lagoon.

The public is advised to remain out of these waters until warning signs have been removed and repairs have been completed.

 Health officials are sampling the water in the area this morning.

Lagoons 1 and 2 of the resort are closed but two other lagoons remain open and accessible to hotel guests and the general public, said Ko Olina spokeswoman Sweetie Nelson.

The break was reported at 9:10 p.m. at the City’s West Beach No. 1 Wastewater Pump Station at 2750 Aliinui Dr. It was stopped two hours later. The main feeds the storm drain that empties near the Ko Olina Resort.

Because of the repairs being done there, exit out of the lagoon is being diverted to its “back gate” on Koio Road until further notice, Nelson said. Entry into Ko Olina from its main gate on Aliinui Drive is being allowed through one of two lanes, she said.