Some officials estimate it could be a week or more before the cleanup is complete and the beaches are deemed safe. In the meantime, sheriff's deputies and the U.S. Coast Guard are patrolling the area from the land and the lake to keep people away.
Officials say raw sewage contaminated the beaches around Kings Beach on Tuesday and flowed for about five hours before officials with the North Tahoe Public Utility District were able to reroute flows from the 14-inch line.
A drinking water intake facility about one-half mile away from the spill was not affected and there was no threat to drinking water quality.
Officials say the spill occurred when a contractor was installing a private pier for two homeowners and punctured the line. They add an investigation continues and the contractor could face fines.