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Sewage Spills Highlight Continued Challenges Along U.S.-Mexico Border

April 26, 2012 4:39 p.m.

Some 4.5 million gallons of raw sewage have flowed into the Tijuana River this month from two separate spills. Observers say wastewater treatment has improved along the border, but more work is needed.

Related Story: Sewage Spills Highlight Continued Challenges Along U.S.-Mexico Border