April 29, 2003

News Release: ZENON wins $5M order in Poland

OAKVILLE, Ontario, April 29, 2003 - ZENON Environmental Inc. (TSX: ZEN and ZEN.A) will be supplying its ZeeWeed® technology to treat industrial wastewater for a major power plant in Poland. The contract has a value in excess of $5 million and will be a turnkey project for the company.

ZENON’s ZeeWeed® membranes are already in use at the same location and are purifying water for boiler feed purposes. The new system will treat all the wastewater from the power plant for either discharge or reuse as pre-treatment for boiler feed water. “Many parts of the world are water short and power plants have a great need to reuse water,” said Andrew Benedek, Chairman and Chief Executive Officer of ZENON. This project is a good demonstration of ZENON’s capability to achieve full water recycle in a power plant.”

Work on the new facility is currently underway and the plant is expected to be complete by February of next year.

ZENON is a world leader in providing advanced membrane products and services for water purification, wastewater treatment and water reuse to municipalities and industries worldwide. With hundreds of installations in over 30 countries, ZeeWeed® is Everywhere!

Chosen as Canada’s Top Exporter of the year, ZENON is also proud to be ranked as the country’s Number One Corporate Citizen by Corporate Knights, a business publication addressing corporate social responsibility. For the third consecutive year, ZENON has been chosen as one of Canada’s Top 100 Employers.

The ZENON group of companies employs over 800 people who operate from six locations in North America, six in Europe, and one in each of Asia, Latin America, and the Middle East.

An S&P/TSX Composite Index company, ZENON Environmental Inc. trades under the symbols ZEN and ZEN.A.

The above release was issued today. For more information contact:
Andrew Benedek
Chairman & CEO
(905) 465-3030
or
Nazeli Seferian
Corporate Communications & Investor Relations
(905) 465-3030 EXT. 3055

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