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PHO Grand Rounds: Public Health follow-up on Iodine in Eastern Ontario groundwater
Tuesday, May 10, 2016 12:00 pm to 01:00 pm
Venue: 480 University Ave, Suite 300 Toronto, ON M5G 1V2 Boardroom 350
Environmental and Occupational Health
City: Toronto
Type: PHO Grand Rounds
Format: In Person; Webinar

Note: This is an open invitation, and may be forwarded to interested parties.

The Ontario Geological Survey and a conservation authority discovered high levels of iodine in eastern Ontario groundwater. This discovery resulted in calls to local public health units in March of 2015.  The Eastern Ontario Health Unit and Ottawa Public Health followed up, with support from PHO and MOHLTC. 

This presentation will discuss the potential sources of iodine exposure in the community, the risks of over-and under-exposure to iodine, as well as the use of biomarkers to assess environmental risks. 

The presenters will also discuss how this model of collaboration across jurisdictions can be applied to a variety of environmental health issues and potentially result in some system improvements.  

Presenters: Dr. Ray Copes, Dr. John Minnery and Dr. Elaina MacIntyre

Dr. Ray Copes is the Chief of Environmental and Occupational Health at Public Health Ontario. He obtained his MD and MSc at McGill University and trained in Occupational and Environmental medicine at St. Michael’s Hospital and the University of Toronto. He was Director of Environmental Health and the founding Scientific Director of the National Collaborating Centre for Environmental Health, one of six National Collaborating Centres in Public Health funded by the Public Health Agency of Canada before coming to PHO. Ray holds appointments as a Clinical Professor at the University of British Columbia and Associate Professor, Dalla Lana School of Public Health, University of Toronto.  

Dr. John G. Minnery completed his degrees in physics and engineering at the University of Ottawa; then his MPH and Ph.D. in Environmental Health at Boston University School of Public Health. At BU, John designed studies of Gulf War Veterans, Exposure Assessments for persistent organic chemicals in the indoor environment, and applied probabilistic microbial risk assessment to drinking water treatment. A registered professional Engineer in Ontario, John’s home position is with the Ministry of the Environment and Climate Change. Over 10 years as a Project Engineer, Process and Product Manager, John worked in the private sector conducting research, piloting, building and commissioning chemical facilities, water and waste water treatment systems around the world.

Dr. Elaina MacIntyre is an epidemiologist specialist in the Environmental and Occupational Health team at Public Health Ontario. She holds a doctorate in occupational and environmental hygiene from the University of British Columbia and completed her postdoc in the Institute of Epidemiology at the German Research Centre for Environmental Health. Elaina worked as an environmental epidemiologist prior to joining PHO in 2013.

Public Health Ontario Grand Rounds are approved for continuing medical education from the Royal College of Physicians and Surgeons. 


PHO Grand Rounds are also approved by Council of Professional Experience for professional development hours (PDHs) for members of the Canadian Institute of Public Health Inspectors (CIPHI). For more information, contact


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Public Health Ontario is committed to complying with the Accessibility for Ontarians with Disabilities Act (AODA).

If you require accommodations to participate in this event, please contact 647-260-7100 or

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