Organic activists protest San Francisco compost

"SAN FRANCISCO — San Francisco wears its environmental consciousness like a green badge of honor. A city department even gives away processed sewage sludge for use in community, backyard and school gardens.
The bio-solids compost has drawn the ire of a public interest and environmental advocacy group.
The Organic Consumers Association doesn't think the variety used in gardens or the one laid on farmlands is tested enough and is waging a national campaign against its use. The sludge, they say, could potentially include thousands of industrial, pharmaceutical and chemical toxins and carcinogens."

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