Nation Los Angeles beaches reopen almost three days after 17 million gallons of sewage spill into Santa Monica Bay July 12, 2021July 15, 2021 Elinor Aspegren, USA TODAY Comments Off on Los Angeles beaches reopen almost three days after 17 million gallons of sewage spill into Santa Monica Bay Los Angeles authorities reopened four miles of beaches after 17 million gallons of sewage spilled into Santa Monica Bay Sunday.