Over the last five years, 100 billion gallons of untreated sewage, industrial waste and urban runoff have been dumped into the Tijuana River.
US-Mexico border: 100 billion gallons of toxic sewage creating a 'public health crisis'
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Over the last five years, 100 billion gallons of untreated sewage, industrial waste and urban runoff have been dumped into the Tijuana River.
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