Officials in the United States are voicing growing concerns about wastewater flows from Mexico that continue to pollute Southern California communities and beaches despite measures taken to mitigate the problem.
U.S. International Boundary and Water Commissioner Maria-Elena Giner said in a letter in late January that, after a visit with Mexican counterparts and other authorities south of the border, "we still have not seen any improvement in wastewater flows, specifically regarding reductions in both transboundary flows in the Tijuana River and flows into the South Bay International Wastewater Treatment Plant."