Headquartered in Rosemont, Illinois, Culligan International offers technologically advanced, state-of-the-art water filtration products, including water softeners, water filtration systems, industrial water treatment solutions, drinking water systems, and whole-house filtration systems. Youll work directly with a team of experienced commercial sales professionals, project managers, and service technicians serving hospitals, manufacturers, dialysis clinics, surgery centers, and other critical facilities throughout the Midwest.