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Western Lake Superior Sanitary District (WLSSD)

Utilities / Waste Management

2626 Courtland St,
Duluth, MN 55806

(218) 722-3336

Call (218) 722-3336
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Established in 1971 to improve and protect the waters of the St. Louis River, Western Lake Superior Sanitary District (WLSSD) treats all municipal and industrial sewage in the Duluth-Cloquet area. It operates multiple wastewater treatment and solid waste facilities. WLSSD is committed to preventing pollution and protecting the environment, including the region’s most precious resource – Lake Superior.