Raw sewage continues to pour across the U.S.-Mexico border from the Tijuana River, heavily polluting beaches and communities in San Diego and exacerbating an ongoing environmental crisis. This year alone, millions of gallons of contaminated water have impacted popular San Diego beaches, prompting closures and widespread concern among residents and local officials.
Video footage shared by TV personality Chef Andrew Gruel depicted what he described as "vomit-inducing yellow-green waves of raw sewage" washing ashore in Coronado. Gruel noted the stark contrast to the typical summer scene, where the shoreline would be crowded with tourists and locals. Instead, the videos show a near-empty beach, underscoring the severity of the pollution.
Beach warning signs have become a common sight in Coronado, with health officials repeatedly advising the public to avoid ocean contact due to the ongoing sewage contamination. The scale of the pollution is substantial, with estimates suggesting that as much as 30 million gallons of sewage-contaminated water can flow into the Pacific Ocean daily from Tijuana.
The crisis has reached a point where San Diego County is distributing free air purifiers to residents in affected areas to mitigate the impact of toxic gases, such as hydrogen sulfide (H2S), that seep into homes. The county's Air Pollution Control District stated that these measures are necessary to help improve odors and reduce exposure to H2S indoors. The district attributes the worsening conditions to aging infrastructure and persistent transboundary sewage flows from Mexico, which result in untreated wastewater creating strong odors that significantly degrade the quality of life for South Bay residents.
Researchers have identified the source of much of the pollution as the "Saturn hotspot" in the Tijuana River, located near Saturn Boulevard in Nestor. The hydrogen sulfide levels in the South Bay have recently exceeded the county's safety standards, indicating a deteriorating situation despite various attempts to address the problem. The contamination has also raised broader public health concerns, with some drawing parallels to recent outbreaks of cyclosporiasis infections linked to produce, suggesting potential links between the cross-border pollution and food safety.