EPA Selects Severn Trent Services and
Adedge Technologies for National Arsenic Treatment Demonstration Projects
SORB 33(tm) technology and BayoxideŽ E33 media to be used at half of the EPA's
Fort Washington, Pa. - June 13, 2003 -The U.S. Environmental Protection Agency (EPA) has
selected SORB 33(tm) arsenic removal technology and BayoxideŽ E33 media for use at six of
12 demonstration sites in the EPA's National Arsenic Treatment Demonstration
Severn Trent Services submitted proposals for six EPA demonstration sites. Adedge
Technologies, Inc., Severn Trent Services' exclusive partner for providing arsenic removal
systems to the small water systems market, also submitted proposals for five additional
EPA demonstration sites. All eleven proposals were evaluated as
"recommended" to the EPA by an external peer review panel. The EPA
selected these technologies for demonstration in Anthony, N.M.; Namble Pueblo, N.M.; Brown
City, Mich.; Stevensville, Md.; Rim Rock, Ariz.; and Rollinsford, N.H.
"As the January 2006 compliance date for the new federal MCL standard approaches,
municipalities need to identify affordable and efficient arsenic removal
technologies," said Tom Mills, Vice President of Severn Trent Services.
"The EPA's National Arsenic Treatment Demonstration Project will help
municipalities understand how they can affordably employ the latest technologies such as
iron-based media to meet the government's new guidelines."
The National Arsenic Treatment Demonstration Project evaluates the efficiency and
effectiveness of drinking water treatment technologies, process modifications, and
engineering approaches at various host sites. The project is designed to demonstrate
compliance with the new federal arsenic standard of a maximum contamination level (MCL) of
10 parts per billion in drinking water. The program will validate the reliability of
Severn Trent's technologies for small systems; gauge the simplicity of their operation,
maintenance, and required operator skills; determine their cost-effectiveness; and
characterize their treatment residuals.
The EPA estimates that approximately 13 million people in the U.S. routinely drink water
containing arsenic at concentrations greater than allowed under recently established
government standards. Severn Trent Services developed the SORB 33 process to reduce
arsenic contamination across a range of water treatment system sizes, and the technology
has been commercially proven to effectively and economically meet the stringent new
government standards. Bayoxide E33 is a dry, robust, crystalline granular ferric
oxide media designed with a high capacity for arsenic, providing long operating cycles and
low operating costs.
About Severn Trent Services
Severn Trent Services (www.severntrentservices.com),
based in Fort Washington, Pa., is a leading supplier of water and wastewater treatment
solutions. The company's broad range of products and services is concentrated around
disinfection and filtration technologies, pipeline analysis, rehabilitation and repair
services, contract operating services, and residential metering products. The
company is part of the Severn Trent Group (London: SVT.L), Birmingham, England.