Formerly known as the Aquatic Toxicity Workshop (ATW), CEW is Canada’s predominant annual meeting in the field of ecological toxicology and related disciplines.  It provides the opportunity to share information on current and emerging topics of regional, national and international importance related to contaminants in ecosystems, both aquatic and terrestrial. Participants include students, academics, government scientists and regulators, environmental consultants, and industry representatives. For more information about the CEW, see About.


CEW 2022 – Winnipeg

Date: October 2 – 5th 2022

The 49th Annual Canadian Ecotoxicity Workshop (CEW) will be held at the historic Fort Garry Hotel, in vibrant Winnipeg, Manitoba, from October 2nd to 5th, 2022.  We are planning for an in-person meeting with hybrid attendance options.

This year’s theme is “Science at the confluence – reconnection, collaboration, and community”.

Upcoming Deadlines
Call for Scientific Sessions and Session Co-chairs – March 31st, 2022
Call for Short Courses – April 14th, 2022
Abstract Submission Opens – April 2022 (stay tuned!)
Registration – July 2022 (stay tuned!)
CEW 2022 in Winnipeg – October 2-5, 2022

Check back here regularly for updates and announcements.

We look forward to welcoming you to CEW 2022 in Winnipeg!
Julie Anderson, Jose Luis (Pepe) Rodriguez-Gil, and Mark Hanson
CEW 2022 Co-chairs


CEW 2021 – Halifax

Thanks to all for making CEW Halifax a great success!

The CEW 2021 Organizing Committee

The CEW 2021 Organizing Committee