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Tijuana Sewage Spill Chokes San Diego Waters
5 Jun
Summary
- Millions of gallons of sewage spilled into South Bay waterways.
- Residents endured strong rotten egg odors and health warnings.
- Future spills are anticipated due to aging infrastructure.

A significant rupture in a Tijuana sewage line recently discharged an estimated 40 to 50 million gallons of raw sewage into the Tijuana River, impacting San Diego's South Bay waterways. This massive spill led to a spike in hydrogen sulfide levels, causing strong, unpleasant odors described as rotten eggs, and prompting public health warnings. South Bay residents, accustomed to cross-border pollution, found this spill particularly severe, impacting their ability to use local beaches and maintain air quality indoors. Weather conditions exacerbated the issue, pushing contaminated water north along the coast.
Emergency repairs to the affected gravity line in Tijuana were completed recently. However, officials warn that aging infrastructure in Mexico makes future failures likely, especially during storm events and anticipated El Niño conditions this winter. Local leaders' requests for a state of emergency were denied. Long-term solutions are planned, including expanding wastewater treatment capacity and improving cross-border agreements to enhance water safety infrastructure.