On January 1, 2008, GBMSD officially took over as owners of the City of De Pere's wastewater treatment facility.  GBMSD's De Pere Facility services our southern service area, primarily the City of De Pere, parts of the Village of Ashwaubenon, and parts of the Towns of Lawrence, Belleuve, and Hobart.

The De Pere wastewater treatment facility was built in 1976 and over the years has received a number of upgrades to keep up with demand and to replace outdated equipment. The average flow received at the facility is 9 million gallons per day (mdg). The maximum design flow for the facility is 14.2 mgd, with a maximum wet design flow of 30 mgd.