[Letters]Pollution lesson from across the seas

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[Letters]Pollution lesson from across the seas



Regarding your editorial on dioxane [“Tackling water pollution,” January 22]:

U.S. standards for 1,4-dioxane range from 3?85 (not 50?85) ppb (ug/L). Unfortunately for us here in Michigan, where we are stewards for 20 percent of the world’s freshwater (the Great Lakes), our cleanup standards for dioxane in groundwater have been loosened from an original 3 ppb in 1995 to the current 85 ppb.

The City of Ann Arbor wisely shut down one of their supply wells when 1,4-dioxane was discovered there at 2?4 ppb several years ago. The cleanup of the over three-mile-long dioxane plume that caused the problem will continue for decades to come. (More information at the SRSW Google Group site).

Roger Rayle, Vice-Chairman, Scio Residents for Safe Water (SRSW)

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