ZENON’s U.K. OFFICE ANNOUNCES MUNICIPAL SEWAGE CONTRACT IN THE U.K.

ZENON’s licensee, PURAC Group, secures breakthrough contract to supply ZENON membranes for municipal sewage plant

Burlington, Ontario, February 22, 2000 – ZENON Environmental Inc. (TSE: ZEN, ZEN.A) announced its entry into one of the largest markets in the world for wastewater treatment. ZENON’s U.K. office has won an order, valued at over $3 million, to supply ZENON’s leading edge ZeeWeed membrane technology for a municipal sewage plant in the United Kingdom. Construction of the new plant will begin later this year and will be operational in 2001. Once completed, the plant will service a community of 40,000 people.

"We’re very proud to announce that ZENON has penetrated one of the largest markets in the world for water treatment," stated Dr. Andrew Benedek, Chairman and Chief Executive Officer. "In less than a year since signing a licensing agreement with the PURAC Group, a division of Anglian Water, and opening our newest office in the U.K., we have been able to successfully enter the burgeoning U.K. market. This further endorses our innovative membrane-based technologies and affirms our expanding global presence."

PURAC is one of the leading process engineering and contracting companies in Europe, specialising in municipal and industrial water and wastewater treatment. A division of Anglian Water Plc., geographically the largest English water utility, the PURAC Group has more than 40 years of broad international experience, and has over 2000 PURAC plants worldwide.

ZENON is a world leader in providing advanced membrane products and services for water purification, wastewater treatment and water recycling. The ZENON group of companies operates from six locations in North America, six in Europe, and one in each of Asia, Latin America, and the Middle East.

ZENON's products and services are marketed for a variety of industrial, institutional, and government applications through ZENON's offices and representatives located throughout the world. Additional information is available at the company’s web site www.zenonenv.com.

For more information: David V.M. Hull

Senior Vice President, Finance & Administration

(905) 639-6320