USFilter Corporation, a Siemens company, delivers cost-effective, reliable water and wastewater treatment systems and services to municipal, industrial, commercial and institutional customers worldwide. USFilter is part of Siemens' Industrial Solutions and Services Group (I&S), which... more

Severn Trent Services (www.severntrentservices.com), with global headquarters in Fort Washington, Pa., USA, is a leading supplier of water and wastewater solutions. The company's broad range of products and services is concentrated around disinfection, instrumentation and filtration... more

Ionics is a world leader in providing outsourcing services to municipalities for advanced membrane water treatment plants, with over 75 years of combined expertise in design, equipment supply and operations & maintenance. Ionics has provided drinking water outsourcing services to... more

Calgon Carbon Corporation (Calgon Carbon) is a provider of products, and solutions for purifying water and air. As of December 31, 2007, the Company had operated in three business segments: Activated Carbon and Service, Equipment, and Consumer. The Activated Carbon and Service segment... more

EDI is a fully integrated manufacturer of diffused aeration and biological treatment solutions. The company headquarters are located in Columbia, Missouri. In addition to the HQ facility, Sales and Operating Directors are located in the United Kingdom, India, Japan, China, and Germany.... more