Three countries working together to protect our shared environment

International collaboration between Canada, Mexico and the United States on environmental issues of common interest

In the Spotlight

Join the Monarch Blitz’s 10th Anniversary: Every Observation Matters

Tiohtià:ke (Montreal), 23 July 2026—The International Monarch Monitoring Blitz is just around the corner! From 31 July to 9 August 2026, we invite everyone across North America to head outside and search for monarch butterflies and milkweed plants.

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Featured Project

Tracking Pollutant Releases and Transfers in North America

Initiative Active Pollutants

The CEC's North American Pollutant Release and Transfer Register (NAPRTR) Initiative promotes public access to data and information reported by industrial facilities in North America, in order to improve understanding of the sources and management of pollutants of common concern across the region and support decision-making relative to pollution prevention...

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Nuclear power plant - AirNow

Featured Publication

Advancing Supply Chain Transparency for Chemicals in Consumer Products

Snapshot of the Health Product Declaration Open Standard for Building Materials in the United States

February 5, 2026 20 pages Pollutants

The building sector faces diverse and complex challenges related to chemical transparency and health impacts. This snapshot highlights a progressive, voluntary method for manufacturers to report chemical information in building products. The Health Product Declaration Open Standard is an example of the collaborative work of architects, health experts, and industry to promote not only the declaration and disclosure of substance ingredients, but also the health risk associated with building materials.

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What We Do

We conduct research, provide tools and training, and provide a unique space for decision-makers and the public to engage on environmental policy issues affecting the North American region.

About the CEC