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  • ASI Group, Ltd.
    250 Martindale Road
    St. Catharines, Ontario
    Canada L2R7R8
    (905) 641-0941

Contact Us

In the late 1980's, ASI gained a global reputation for our proactive response to the zebra mussel infestation of the Great Lakes. Our company has the distinction of being the first to perform a chlorination treatment for zebra mussels in North America. We are a full-service engineering and technology based company with a focus on all aspects of underwater infrastructure inspections, maintenance, repair and the design, build and operation of water and wastewater treatment facilities. Presently, the ASI team consists of over 100 experts including Professional Engineers; Certified Engineering Technologists; Environmental and Engineering Technicians; Water Quality Analysts; Licensed Commercial Divers; and Underwater Inspection; Surveyors and Hydrography specialists. Our strongest asset has been the ability to offer a full service approach - from initial problem identification to the development and implementation of the appropriate solution. At ASI Group, our goal is to remain the universal leader in the water and wastewater technology and solutions industry. This can be accomplished by continually providing “innovative solutions and optimized results.”



Primary Location

250 Martindale Road
St. Catharines, Ontario
Canada L2R7R8
(905) 641-0941


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