Severn Trent Services Acquires the Business of Quay Technologies Ltd.


Acquisition expands company's ultraviolet product offering to meet high market demand for alternative disinfection technologies

FORT WASHINGTON, Pa. - June 6, 2007 - Severn Trent Services has announced the acquisition of the business of Quay Technologies Ltd. of Berks, United Kingdom, manufacturers of a proprietary ultraviolet (UV) technology for use in water and wastewater disinfection. Quay Technologies' patented microwave-powered UV systems offer significantly improved reliability and bulb life, resulting in lower overall operating costs when compared with traditional technologies. Severn Trent Services will offer the Quay UV systems to the water and wastewater treatment market under the new brand name, MicroDynamics(TM).

"The unique Quay technology strengthens Severn Trent Services' position in providing UV solutions for the growing global water and wastewater disinfection treatment markets. Our customers will benefit by having access to universally accepted UV disinfection results that are delivered in a much more efficient and reliable manner," said Thomas M. Mills, the company's vice president of marketing and business development.

Since 1998, Quay Technologies has provided UV solutions to municipal water and wastewater clients. MicroDynamics' microwave technology enables the use of electrodeless bulbs, dramatically increasing system efficiency and bulb life when compared to traditional UV lamps. All systems are modular, with a small footprint, and use the same parts and components for easier maintenance and lower operating costs. The operating costs of MicroDynamics systems can be as little as half of competing UV technologies, primarily driven by significant reductions in maintenance costs. The company supplies both closed-vessel and open-channel systems.

In wastewater applications, UV disinfection is highly effective on all bacteria and viruses and may also be effective in combating endocrine disrupters. In drinking water applications, UV technology is used in the treatment of chemical contamination and in the treatment of bacteria and viruses, including cryptosporidium.

About Severn Trent Services
Severn Trent Services (www.severntrentservices.com), with global headquarters 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, instrumentation and filtration technologies, contract operating services and state-of-the-art residential metering products and services. Our analytical services group is the United Kingdom's leading environmental testing organization, and our international management services business provides support in all aspects of water and wastewater utility operational development and business transformation. Severn Trent Services is a member of the Severn Trent Plc (London: SVT.L) group of companies. Severn Trent is a FTSE 100 company.

CONTACT:
Lori Doppelt
215-997-3727
ldoppelt@severntrentservices.com

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