Profile: Culligan International Co. specialize in the water treatment business. We deliver water treatment products, refreshing, clean and pure water . We provide solution for hard, bad tasting and bad smelling water. Industrial water must be treated before it is reintroduced into the environment. Process water and rinse water used in a variety of industries that has become contaminated with metals and chemicals must be properly filtered through a process water filtration system prior to discharge. The treatment method use to remove process water contaminants will depend largely on the type of water to be treated and the level of contamination.