In 1909 Maurice Weil and A.C. Durdin founded Chicago Pump Company in Chicago, IL. In the early days they specialized in electric condensation pumps as well as bilge pumps. Today Chicago continues to build conventional heavy-duty pumps and equipment for the wastewater market.
In 2008 Chicago was purchased by Grundfos and is based in Aurora, IL. Since 2010 Gilbert Pump & Mechanical has Represented Chicago for the State of Alabama and the Florida Panhandle.