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Headaches, rashes, more: Sewage pollution continues to plague South Bay schools

Hydrogen sulfide pollution from Tijuana River sewage spills causes health issues and disrupts outdoor activities at Bayside Elementary, with 20% of local households reporting school disruptions.

This story was originally published by CalMatters. Sign up for their newsletters. Last week fog crept over the Tijuana Estuary in Imperial Beach, oozing a pungent rotten-egg smell, as hydrogen sulfide bubbled up from the polluted Tijuana River. Virginia Castellanos, the school nurse for Bayside STEAM Academy near the estuary, worried that students would get headaches, upset stomachs or breathing problems from the foul odor. She had another press…

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Farron Espinoza with his son, Alan Gonzalez, 9 years old, at Bayside Elementary School in Imperial Beach, on March 19, 2026. Gonzalez recently developed a rash after an excursion to the estuary near his school. Photo by Zoë Meyers for CalMatters.(Zoë Meyers)Last week, a dense fog covered the estuary of Tijuana in Imperial Beach, shedding a penetrating smell of rotten egg, resulting from the bubbles of hydrogen sulfide that sprang from the pollut…

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Cal Matters broke the news in Sacramento, United States on Thursday, March 26, 2026.
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