Despite massive investments in gray infrastructure, the Milwaukee Metropolitan Sewerage District faced 50 to 60 sewer overflows per year. Supplementing the grey infrastructure investment with green infrastructure – including bioswales, permeable pavement, stormwater trees, rain gardens, and more – the utility reduced overflows to an average of only 2 overflows per year. MMSD’s investment in green infrastructure could reduce the utility’s future infrastructure costs. In particular, an investment of $178 million for green infrastructure in the agency’s combined sewer service area would result in stormwater capture equivalent to $222 million investment in gray infrastructure. Click the link below to download the full case study.
Check out WaterNow’s Tap into Resilience Toolkit to learn even more about investing in localized solutions like MMSD’s in your community.
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