Lawrence River Basin Sustainable Water Resources Agreement that also includes the Premiers of Ontario and Quebec.

[3] Due to the United States Supreme Court ruling in Wisconsin v. Illinois, the State of Illinois is not subject to certain provisions of the compact pertaining to new or increased withdrawals or diversions from the Great Lakes.

[5] City water historically drawn from an aquifer reached radium levels exceeding federal standards.

After protest and later negotiation with state officials, Waukesha became obligated to find a new source of water by 2018.

The city's limits lay 1.5 miles outside of the Lake Michigan drainage boundary; however, the county in which it resides straddles the watersheds of both the Mississippi (via the Fox River, which runs through Waukesha) and the Great Lakes.

[8] Several environmental groups argued the proposal as presented did not comply with Compact requirements and demanded a thorough review.