Environmentalists battling San Francisco’s use of Hetch Hetchy Valley as the city’s main drinking water cache are taking a new tack – raising questions about the water’s quality in light of higher-than-normal rates of certain parasitic infections.
But officials with the city’s water and public health agencies insist that the water is safe and that the group’s alarms have a political goal.
Read more: http://www.sfgate.com/cgi-bin/article.cgi?f=/c/a/2010/07/21/MNQI1EEFBC.DTL#ixzz0uQsqvjrI
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