SAN DIEGO — A new report from researchers at San Diego State University, citing “untreated sewage, industrial waste, and urban run-off due to inadequate infrastructure and urbanization,” calls the Tijuana River “a public health crisis” that imperils the good health of a wide range of people who live, recreate and work near the polluted waterway, particularly when wet weather causes floods to spread. In a white paper that is not itself peer-reviewed research, authors synthesize the multiple studies that have documented pollution over the years, pausing on a recent paper documenting that the thr…