Water Pollution Caused by a Break in the U.S.-Mexico Border Pipeline

The issue of cross-border sewage pollution along the U.S.-Mexico border continues to escalate. A 42-inch municipal sewage main in Tijuana, Mexico, has ruptured, causing millions of gallons of untreated domestic sewage and industrial wastewater to continuously flow into the river that forms the border between the two countries. The foul odor of hydrogen sulfide emanating from the water has spread widely into San Diego County, prompting local authorities to issue a countywide public health alert.