Leopold - A Xylem Brand has long been a worldwide leader a in the water and wastewater treatment industry supplying both filtration and clarification systems. Since its establishment in 1924, Leopold has pioneered and acquired a number of innovative technologies aimed at improving the quality of water while reducing costs. Although more than 8,000 American cities and towns have treatment plants featuring Leopold products, our influence has not been limited to North America. Clients around the world have also come to rely on Leopold's expertise and technological leadership in water and wastewater treatment. Our systems are in use on six of the seven continents, in every South American country, and in most European and African countries.