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Water-saving in the north-east: Trees grow in Brooklyn
Nov 11, 2010 | The Economist. NYC has a serious sewer problem,
spilling more than 27 B gal. (102 B L) of untreated overflow into its
harbour each year.U.S cities rely on decrepit sys. that collect
storm-water run-off, industrial waste & human sewage in the same
pipes.Usually these pipes take waste water to treatment plants.But any
overflow is released into rivers & streams.Time, erosion &
increasingly erratic weather have made this a national issue. NYC
recently unveiled a plan to clean up its waterways.Instead of spending
billions on new tanks & pipes (i.e, “grey infrastructure”), which
take yrs. to build & never quite address the problem, NYC will
invest in “green infrastructure”, e.g. roofs covered with vegetation,
porous pavements & kerbside gardens.Instead of treating rainfall as
waste to be quickly whisked away, NYC will let it sink usefully into the
ground: helping to make the city greener, improve air quality, raise
property values, increase jobs & lower water & energy costs,
green_roofs  water  infrastructure  New_York_City  Brooklyn  wastewater-treatment  overflow  environment 
november 2010 by jerryking
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