JOHN DEERE ENGINE WORKS · WATERLOO, IAActiveJOHN DEERE FOUNDRY WATERLOO · WATERLOO, IAActiveJOHN DEERE WATERLOO WORKS DRIVETRAIN OPERATIONS AND FOUNDRY · WATERLOO, IAActiveKCNG IOWA LLC · WATERLOO, IAActiveNORTHLAND PRODUCTS CO · WATERLOO, IAActive
Source: U.S. EPA Toxic Release Inventory. Registration does not by itself indicate a health hazard.