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Stormwater needs treatment
8:59 am CST March 4, 2014

 The Village of Winnetka recently reported that most of what will be discharged to Lake Michigan from the proposed Willow Road storm water tunnel is mearly water. Urban storm water is not free of pollutants and contains a number of contaminants including elevated levels of solids, nutrients, numerous trace metals, oils and greases, polychlorinated aromatic hydrocarbons, organic herbicides and pesticides, and fecal contamination.