Pollution from the Tijuana River is ending up in the air near the border, study finds
By Jaycey Moser News Article: https://www.latimes.com/environment/story/2025-05-28/tijuana-river-air-pollution Journal Article: https://www.science.org/doi/10.1126/sciadv.ads9476 Background Wastewater is a source of water pollution that may come from sewage or industrial processes. While wastewater treatment plants treat wastewater before releasing it back into natural water systems, insufficient treatment may introduce potentially harmful organic pollutants into waterways. Some of these organic pollutants include pharmaceuticals, illicit drugs, biocides, and personal care products–as well as their metabolites–which can be difficult to regulate. An underexplored aspect of wastewater pollution is the aerosolization of these organic pollutants. When insufficiently treated wastewater is released into rivers, organic pollutants can be directly emitted into air as aerosols due to river turbulence. Additionally, once a river releases into an ocean, organic pollutants may reach th...