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New wastewater discharge permit requires 'green infrastructure'
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Anthony Mayer, CEO of Hanging Gardens LLC, checks the irrigation system at the recently planted green roof on the Mitchell Street Market Lofts on Wednesday in Milwaukee. A draft state wastewater discharge permit for the Milwaukee Metropolitan Sewerage District is the first in the U.S. to require rooftop plantings and installation of other "green infrastructure." READ MORE | PHOTO GALLERY Image by Chris Wilson
A draft state wastewater discharge permit for the Milwaukee Metropolitan Sewerage District is the first in the U.S. to add this regulatory wrinkle: requiring rooftop plantings and installation of other "green infrastructure" - not sewer pipes or storage tunnels - to collect and absorb storm water.
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