California Governor Gavin Newsom and his counterpart from Baja California Norte, Jaime Bonilla, on Wednesday pledged to work as partners in combating toxic sewage flows from Tijuana into the South Bay as the cross-border crisis continues to threaten the health of thousands of San Diego County residents.

The persistent flow of toxic sewage from Mexico into the South Bay is one the most pressing problems facing both Baja California Norte and the state of California.