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Going for Green: Quantifying the Benefits of Green Infrastructure for CSO Reduction in Milwaukee

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Abstract:

The Milwaukee Metropolitan Sewerage District (MMSD) is a regional government agency that provides water reclamation and flood management services for about 1.1 million customers in Wisconsin. The MMSD has invested heavily in grey infrastructure to successfully reduce sewer overflows. The MMSD has proposed an ultimate goal of eliminating all overflows by the year 2035 and green infrastructure has been identified as a critical component of meeting this goal. The MMSD conducted this study to further evaluate the potential of green infrastructure to help eliminate overflows. A modeling approach that included a series of watershed, sewer system, and green infrastructure models was used to evaluate how the stormwater and wastewater systems work together and to evaluate the effectiveness of green infrastructure in reducing overflow frequency and volumes. Potential benefits of green infrastructure were then measured using a “Triple-bottom-line” analysis.

Keywords: Green infrastructure; Milwaukee Metropolitan Sewerage District; System for Urban Stormwater Treatment and Analysis Integration (SUSTAIN); combined sewer overflows; triple-bottom-line

Document Type: Research Article

DOI: http://dx.doi.org/10.2175/193864711802639624

Publication date: January 1, 2011

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  • Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed.

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