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Madison Metropolitan Sewerage District

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Meet a neighbor helping protect our freshwater from salt pollution! Peter, a Middleton resident, is one of the first in the area to install a blending valve on his home water softener—an easy upgrade that reduces salt use while keepin...


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Madison Metropolitan Sewerage District is proud to be part of Wisconsin’s collaborative wastewater surveillance network. And new public dashboards are making data more accessible and meaningful than ever.

The Wisconsin Department of Health Services (DHS) and the Wisconsin State ...


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A rendering of what the Madison Public Market will look like in the future, once it’s open.

What if more people in our service area saw the sewer not as a magic disappearing act, but as the complex, carefully managed infrastructure that it is? Creating a more knowledgeable, engaged community is the idea behind a creative partnership between Madiso...


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Hauled grease trap waste filling the septage receiving trough.

For many wastewater utilities, hauled grease is both a necessary service and an operational headache. Grease trap waste, often referred to as FOG (fats, oils, and grease), must be disposed of somewhere when restaurants and foodservice facilities, such as hospitals or schools, have thei...


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2024 sampling results now available

Madison Metropolitan Sewerage District has released its 2024 sampling and analysis of PFAS, or per- and polyfluoroalkyl substances, in the local wastewater system. The data show low, stable levels for ...


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