In the wake of rising outcry in San Diego of cross-border flows of contaminated water, trash and sediment from Tijuana, Mexico is moving ahead with a series of short-term upgrades to Tijuana’s sewage collection and treatment system aimed at preventing such incidents, and responding with greater speed should they occur. These efforts include upgrading a key piece of infrastructure in Tijuana known as Pump Station CILA that is critical for preventing dry weather flows in the Tijuana River channel from crossing into the United States.