As part of USFilter, Wallace & Tiernan designs and manufactures a broad range of water and wastewater treatment systems. We offer the most comprehensive line of disinfection/chlorination equipment available, as well as analytical instrumentation and controls, chemical-metering pumps, dry feeders, flowmeters and systems. Each of our products reflects the quality and thoughtful design of more than 90 years of experience. \r\n\r\nAs the leading supplier of chemical-feed equipment used in the treatment and disinfection of potable water and wastewater, US Filter/Wallace & Tiernan's equipment is considered to be the industry standard. W&T is headquartered in New Jersey, with operating centers in Australia, Canada, England, Germany and Mexico. \r\n\r\n