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. Measure, cut, thread, or bend pipe to the required angle using hand or power tools or machines such as pipe cutters, pipe-threading machines, or pipe-bending machines.