The New York Times wrote about the San Diego-Tijuana region today in a somewhat esoteric story that looks at how our borders blur — despite the border fence — and how the two cities share so much: art and air, people and politics. Oh, and sewage.

The story says:

On a host of issues, there is no separating San Diego, the largest city along the border, from Tijuana, the biggest municipality on the Mexican side.

They are linked economically, with Tijuana’s assembly plants, or maquiladoras, helping to fuel growth on both sides of the border. High home prices in San Diego have pulled up Tijuana’s real estate as well.

When it comes to the environment, it is difficult to say where Mexico ends and the United States begins. Air pollution knows no borders, and heavy rains in Tijuana send sewage and industrial waste down the Tijuana River into the United States.

A former congressman once used a bulldozer to try to push sewage back to Mexico, but that was no permanent fix. For years, an American-financed sewage treatment plant on the Tijuana side has been considered the best solution, although now support is increasing for a plant to process waste on the American side.


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