Pewaukee is the host organization of Local 5241 and represent 49 bargaining members. These members serve the City of Pewaukee, the Village of Pewaukee and the Village of Lisbon. 

In 2020 the local accepted the members of the Sussex fire department as an affiliate. The Sussex affiliate currently represents 10 bargaining members.

In 2021 The local accepted the members of Lake Country Fire and Rescue as an affiliate. The Lake Country affiliate currently represents 30 bargaining members. These members serve the communities of City of Delafield, Town of Delafield, Town of Genesee, Village of Chenequa, Village of Nashotah, Village of Oconomowoc lake, Village of Wales