Thanks very much.
Good morning, Chair, and members of the standing committee. Thank you for the opportunity to speak today.
As was already mentioned, I'm an associate professor in the school of environment at Trent University in Peterborough, Ontario. During the past three decades, my research has focused on assessing the impacts of air pollution on natural ecosystems, including fresh waters. I have studied fresh waters in the Canadian Arctic, in western British Columbia, in the Athabasca oil sands region and in south central Ontario. I focus on issues such as freshwater acidification; eutrophication; nutrient enrichment; and the fate of mercury, trace metals and emerging contaminants, including microplastics, in these systems.
Today I will briefly reflect on five broad points with respect to the federal management of pollution. I intend to expand on these points in a brief to be submitted within the coming weeks.
The first point is that pollutants can travel. Through this committee, you have heard evidence of freshwater pollution downstream of waste-water treatment plants or other point sources of pollution, which, for example, are some of the causes of pollution in the Great Lakes.
You've also heard that many pollutants can travel long distances in the atmosphere before being washed out by rain and deposited into fresh waters. It's well established that pollutants can travel across provincial boundaries and impact fresh waters in background regions that are remote from population centres. Therefore, freshwater pollution is a national-scale issue that requires management at the national scale.
The second point is that pollution is transboundary. Many pollutants undergo a long-range transboundary transport in the atmosphere, crossing national boundaries. In other words, some pollutants can travel through the atmosphere from one country to another. For example, Canada is a recipient of pollution from its nearby and distant neighbours. Similarly, Canada contributes to the pollution burden of other countries.
Therefore, the management of many pollutants can only be addressed through international agreements. There are many examples of the success of international agreements, such as the recovery of fresh waters from acidification under the Canada-United States Air Quality Agreement or the current work of the United Nations Intergovernmental Negotiating Committee on Plastic Pollution. Canada should continue to be an active participant in the international management of pollution.
The third point is that freshwater pollution will be influenced by climatic change. We currently lack an understanding of how the sources of pollutants, their transport and their fate in fresh waters will be impacted by climatic change. However, the current prediction is that climatic change will exacerbate freshwater pollution across Canada.
The fourth point is that monitoring is essential. Monitoring of fresh waters is essential to our understanding of the sources and impacts of pollution and essential in evaluating the success of mitigation strategies. This point is obvious.
However, we should reflect on the type of monitoring programs that are required. I suggest that coordinated national-scale monitoring is required for effective detection and management of pollution. Such monitoring programs must be long-term programs to allow for the detection of trends, and they must be coordinated to allow for comparison across regions.
For example, to date, observations of microplastics in fresh waters have been carried out by individual researchers, each using different sampling and analytical protocols. As a result, we have no capacity to compare across studies, and a limited understanding of the scale of the issue.
The fifth and last point is that research is essential. If we are to effectively tackle freshwater pollution, we need to understand the pollutant sources and their fate in the environment. Resources must be dedicated accordingly through provincial and federal funding programs to build capacity in research, and through grants and contribution agreements to build partnerships between governments and research institutions.
It is well established that research has played a central role in our understanding of freshwater pollution. For example, research conducted at the IISD Experimental Lakes Area in northern Ontario has contributed to environmental policy around the world, from mitigating algal blooms to reducing how much mercury gets into our waterways, and more recently to advancing our understanding of the fate of microplastics in fresh waters.
In closing, I urge the committee to reflect on these five points with respect to the federal management of freshwater pollution. Pollutants can travel, and pollution is transboundary.
It is a national and international-scale issue that requires management at the national and international scale. Monitoring and research are essential to our understanding of the sources, fate and management of pollution. A change of government should not result in the dismantling of monitoring capacity, research support or legislation to protect the quality of fresh water.