San Diego Aims to Fix a Pollution Problem by Helping a Tijuana Slum

By Dotinga, Randy | The Christian Science Monitor, February 6, 2008 | Go to article overview

San Diego Aims to Fix a Pollution Problem by Helping a Tijuana Slum


Dotinga, Randy, The Christian Science Monitor


When it rains in Tijuana, it pours in San Diego. Runoff crosses the international border in gushes of floodwater, clogging everything in its path with dirt and debris.

A river, a wildlife-filled estuary, and the sea are all victims of this rainy-season menace, the product of a sprawling Mexican city where the poor often live without paved streets, running water, or sanitation.

Now, a cross-border team hopes to stem the tide of US-Mexican tensions and turn a Tijuana slum into an example of environmental activism. Their goal: Convince the community to devote its own time and effort to pave the roads in San Bernardo, a bustling neighborhood that becomes a bleak, muddy lake during heavy rains.

The plan, at least its initial stages, is to cover dirt roads with concrete blocks designed to hold water and allow it to seep into the earth. Residents, mainly women, are making the 70,000 "permeable pavers" needed for just the first half mile of road.

There are obstacles. For one, support by locals has been spotty. For another, the project is aiming to link both countries in a region long divided by language, disparities in wealth, and age-old resistance to cooperation.

Still, the project has plenty of potential beyond the small neighborhood. "The intent is to create an example," says Oscar Romo, an environmentalist and professor at the University of California at San Diego who's leading the effort. "I don't have the resources or the will to start paving the [entire] city. What I'd like to do is convince authorities on both sides of the border that this is an environmentally friendly way to pave the roads."

Differences aside, San Diego and Tijuana do have plenty of similarities: rapid growth in recent decades, massive sprawl, and tourism. But while San Diego is known for its sun-kissed beaches and world-famous zoo, Tijuana still carries the reputation it developed in the 1920s and 1930s as a place where Americans can let loose at free-wheeling bars and restaurants.

While still a haven for certain kinds of vice, "TJ" has turned into a huge and crowded city devoted to manufacturing in the form of factories known as maquiladoras. It's also become a "staging area," a place where immigrants from Mexico, Central America, and South America wait to cross into the United States, says Paul Ganster, director of the Institute for Regional Studies of the Californias at San Diego State University.

As a result of its role as both destination and way station, Tijuana's population has skyrocketed from 235,000 in 1964 to more than 1.5 million today. Along with the growth has come acres upon acres of slums, known as barrios or colonias.

"There's a tradition all over Latin America of people simply squatting in unoccupied land and developing communities," Mr. Ganster says. "They'll come in and build out of whatever materials they can find. Over time, the quality of housing improves and urban services work their way in. Eventually, you get reasonably developed urban communities."

Typically, electricity arrives quickly, followed by water, though the process can take seven to eight years, Ganster says.

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San Diego Aims to Fix a Pollution Problem by Helping a Tijuana Slum
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