Great Lakes Water Authority living in Detroit. The authority has not yet set water rates (which could be variable by community), although it aims to determine rates by March 2016 and make them effective by July 1, 2016. Annual rate increases will be capped at four percent for the first ten years of the authority's existence. Great Lakes Water Authority The Great Lakes Water Authority (GLWA) is a regional water authority in the U.S. state of Michigan. It provides water and sewer services for the Southeast Michigan communities, including Wayne, Oakland, and Macomb counties, among others. The Great Lakes Water Authority was created in
Great Lakes for Lakes Ontario and Erie were created, along with what would become the Saint Lawrence River. The Great Lakes are estimated to have been formed at the end of the last glacial period (the Wisconsin glaciation ended 10,000 to 12,000 years ago), when the Laurentide Ice Sheet receded. The retreat of the ice sheet left behind a large amount of meltwater (see Lake Algonquin, Lake Chicago, Glacial Lake Iroquois, and Champlain Sea) that filled up the basins that the glaciers had carved, thus creating the Great Lakes as we know them today. Because of the uneven nature of glacier erosion,