LONG BEACH, Calif. (AP) — Beaches along the south Los Angeles County coast have been closed due to a spill untreated sewage.

Authorities say a sewer main line failed Thursday afternoon in the city of Carson and 2 million gallons to 4 million gallons of sewage was discharged into the Dominguez Channel, a waterway that empties into Los Angeles Harbor.

The city of Long Beach has closed all swimming areas on approximately 7 miles of its beaches. The Los Angeles County Department of Public Health has closed Cabrillo, Point Fermin, White Point Park, Royal Palm and Rancho Palos Verdes beaches.