Great Lakes Water Authority Email Format

UtilitiesMichigan, United States501-1000 Employees

The Great Lakes Water Authority is a regional water and sewer utility that serves a substantial share of Michigan's customers. It began regional operations in 2016 after 40-year leases with the City of Detroit, enabling coordinated management of the area's water and wastewater infrastructure. The authority oversees regional treatment plants, major water transmission mains, interceptors, and related facilities, which are leased from Detroit to fund capital improvements for both the Detroit retail system and the regional network. GLWA provides wholesale water and wastewater services to 126 municipalities across seven Southeastern Michigan counties, serving about 3.9 million customers. It is based in Detroit, Michigan, and governed by a Board of Directors with representation from Oakland, Macomb and Wayne counties, two representatives from the City of Detroit, and a governor-appointed member for customer communities outside the tri-county area. In June 2026, GLWA announced a partnership with Aquanuity, Inc. to apply digital twin technology to water infrastructure, reflecting ongoing modernization efforts.

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