“A sewage spill of this magnitude is dangerous and unacceptable and we need to understand what happened,” Supervisor Janice Hahn said.
Approximately six to seven million gallons of untreated sewage was discharged into the Dominguez Channel on Dec. 30, according to county officials.
Colorado Lagoon West will remain closed until further notice, officials said.
Health officials said those who enter the water in these areas could get sick.
The spill was caused by a pump station in Long Beach that failed after losing power on Saturday, health officials said.
The sewage spill was caused by a grease blockage, according to the city.
The closure went into effect on Dec. 18 for the ocean water along all 7 miles of the city’s public beaches.
Long Beach Fire Department (LBFD) officials announced the closure of beaches in Long Beach due to lightning Wednesday afternoon, effective immediately, following in the footsteps of beaches in Huntington Beach and Newport. An hour later, the storm cell had passed, and the beaches reopened.
Long Beach beaches were closed for more than four hours Saturday afternoon, due to a storm cell that brought rain, humidity and lightning to the region over the weekend, Long Beach Fire Department officials said.