The #USIBWC reports the following Mexican Sewer System Failures that will impact the South Bay International Wastewater Treatment Plant (SBIWTP) in #SanDiegoCA and American citizens in the area. The USIBWC is monitoring emergency repairs beginning tonight to repair a leak on the Parallel Gravity Line that conveys wastewater in Tijuana. USIBWC has been in close contact with Mexico, demanding they take every action possible to eliminate additional wastewater from going into the Tijuana River and entering the United States. During this repair, which is expected to take at least 24 hours, pump stations PBCILA and PB1 will be offline and flow from the Tijuana sanitation system will be sent to SBIWTP. Area residents may notice increased wastewater flows in the Tijuana River Channel due to the pump stations being offline along with stronger odors. Other possible impacts are beach closures and health risks if untreated or partially treated wastewater reaches U.S. waters. Since flows to Smuggler's Gulch canyon collector is possible, USIBWC is implementing proactive mitigation measures to stop or reduce the transboundary flows at the gulch. Staff and equipment are positioned at the collector to respond. Commissioner @USIBWCCMcIntosh has informed @cilamexico transboundary flows are unacceptable and the United States expects Mexico to take all necessary actions to stop any flows.