Severn Trent Services sells Pipeline Products & Services Group to ADS LLC

• Water and wastewater company divests pipeline business to concentrate on core technologies.

FORT WASHINGTON, PA, August 2, 2006 -- Severn Trent Services announced today the sale of its Pipeline Products and Services group to ADS LLC, a subsidiary of Nova Analytics Corporation. The sale includes the full range of Severn Trent's water and sewer pipeline services including water distribution and sewer collection analysis, pipeline repair and rehabilitation and Hydra-StopT line stopping equipment and services. Total annual revenues for Severn Trent's Pipeline group are $25 million.

"The sale of our pipeline business is an important step in our international water growth strategy. It will allow us to focus on our core technologies in the operating services and water purification markets," said Leonard Graziano, Severn Trent Services president and chief executive officer. Severn Trent Services has successfully employed a strategy directed toward the global expansion of its water and wastewater treatment technologies, water metering products and operating services. It conducts business in more than 100 countries and with several leading brands, the company is well positioned for continued growth.

ADS LLC manufactures and distributes flow measurement equipment and software through two divisions: ADS Environmental Services and Accusonic Technologies. ADS provides services to customers in more than 40 countries and has conducted more than 5,000 flow measurement projects in its 30-year history.

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, instrumentation and filtration technologies, contract operating services and state-of-the-art residential metering products and services. 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 group of companies. An international environmental services leader, Severn Trent is a FTSE 100 company.

---

Also see: ADS acquires Severn Trent Pipeline Services

###