Aquion, Inc. is a manufacturer and marketer of premium water treatment equipment and water quality solutions that serve a variety of markets around the world. We have been manufacturing treatment equipment since 1943. Aquion divisions include: Rain Soft, Erie Water Treatment, Clearwater Technology (CWT), Optipure, and Procam.We offer a diverse line of water conditioners, iron filters, carbon filters, drinking-water purifiers, ozone, ultraviolet disinfection systems, reverse osmosis systems and acid neutralizers for the residential and commercial water treatment industry. Our products carry quality and performance certifications from NSF, WQA and UL. Our facility in Roselle Illinois is an ISO 9001-2008 certified facility.We have four manufacturing facilities located in Roselle Illinois, San Luis Obispo California, Olen Belgium, and Plano Texas.