NORWALK STORMWATER MANAGEMENT

The Filter Project is a part of Norwalk Public Work's stormwater management improvement program and involved fitting over 275 storm drains with high-technology filtration systems equipped with Smart Sponge® Plus. The Ultra Urban Filters performed extremely well: the average contaminant removal rate was over 75 percent, and the maximum removal rate was 99.9 percent. The first cleaning of the 275 catch basins yielded over 7.4 tons of trash, debris, leaves, and sediment – the weight of over six Ford Escorts. All this trash, and debris would have entered the Sound's recreational waters if it hadn't been captured by the filters.

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