SAN DIEGO (FOX 5/KUSI) — The Tijuana River has been severely polluted for decades, impacting air and water quality for residents who live near the Tijuana River Valley, not to mention creating a foul odor that gets worse with heat.
These issues plaguing the Tijuana River have prompted nonprofit environmental advocacy group American Rivers to list the river as the second most endangered river in the United States in 2025.
The Tijuana River made the list in 2024 , also due to the cross-border pollution, but the river came in on American Rivers‘ annual list of “America’s Most Endangered Rivers” in the number 9 place last year.
Imperial Beach leaders call for action on Tijuana River sewage crisis
This year, American Rivers moved the Tijuana River up among endangered rivers in the country, behind only the Mississippi River…