| Titre | Groundwater research in southern Ontario by Environment and Climate Change Canada |
| Télécharger | Téléchargement (publication entière) |
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| Licence | Veuillez noter que la Licence du gouvernement
ouvert - Canada remplace toutes les licences antérieures. |
| Auteur | Roy, J W; Spoelstra, J; Van Stempvoort, D R; Propp, V |
| Source | Regional-Scale Groundwater Geoscience in Southern Ontario: An Ontario Geological Survey, Geological Survey of Canada, and Conservation Ontario Geoscientists Open House; par Russell, H A J ; Ford, D; Holysh, S; Priebe, E H; Commission géologique du
Canada, Dossier public 8528, 2019 p. 24, https://doi.org/10.4095/313598  Accès ouvert |
| Année | 2019 |
| Séries alt. | Ontario Geological Survey, Open File Report 6349 |
| Éditeur | Ressources naturelles Canada |
| Éditeur | Gouvernement de l'Ontario |
| Réunion | Regional-Scale Groundwater Geoscience in Southern Ontario: Open House; Guelph; CA; février 27-28, 2019 |
| Document | dossier public |
| Lang. | anglais |
| DOI | https://doi.org/10.4095/313598 |
| Media | en ligne; numérique |
| Référence reliée | Cette publication est contenue dans Regional-Scale Groundwater Geoscience in Southern Ontario: An Ontario Geological Survey, Geological Survey of Canada, and Conservation Ontario Geoscientists Open House |
| Formats | pdf |
| Province | Ontario |
| SNRC | 30; 31B; 31C; 31D; 31E; 31G; 40; 41A; 41G; 41H/03; 41H/04; 41H/05; 41H/06; 41H/12; 41H/13 |
| Région | le sud de l'Ontario; Great Lakes |
| Lat/Long OENS | -84.0000 -74.0000 46.0000 41.5000 |
| Sujets | eau souterraine; aquifères; géochimie des eaux souterraines; ressources en eau souterraine; régimes des eaux souterraines; mouvement des eaux souterraines; pollution de l'eau souterraine; eaux de surface;
substances polluantes; phosphore; chlorure; métaux; matières organiques; sites d'élimination des déchets; lessivage; écosystèmes; Changement climatique; hydrogéologie; géologie de l'environnement; géochimie; Nature et environnement |
| Diffusé | 2019 02 08 |
| Résumé | (disponible en anglais seulement)
Over the past decade, the groundwater-specific research of Environment and Climate Change Canada has focused on groundwater transport of pollutants to surface
waters. Within southern Ontario, the key pollutant of interest has been phosphorus, due to its link to eutrophication and harmful algal blooms of the Great Lakes and its watershed. Our work has targeted point sources, such as domestic wastewater
septic systems, as well as broader-scale inputs within both urban and rural landscapes. Other contaminants have also received interest, including chloride (road salt), metals, and both legacy and emerging organic contaminants (e.g., pharmaceuticals,
per- and polyfluoralkyl substances (PFAS), organophosphate flame retardants, etc.), especially in urban environments. A new study is looking at a range of these chemicals in old, closed landfills, of which thousands reside across southern Ontario.
These substances pose a toxicity risk to aquatic ecosystems in the receiving environment and may spread more broadly from there.
This work has largely employed two methodological "tools", i) surface water receptor-targeted groundwater sampling,
and ii) the analysis of artificial sweeteners. The former allows for rapid acquisition of a large number of samples at relatively moderate expense in comparison to the use of wells. It also provides more exact information on the concentrations or
mass of contaminants impacting the receptor. Artificial sweeteners can serve as a tracer of wastewater and landfill leachate, thus being a proxy for the possible presence of other wastewater or leachate contaminants and allow some quantification of
their potential inputs. Their presence can also guide targeted sampling of more costly analytes. Here we provide a brief overview of our recent research in southern Ontario with some key examples of how these two tools have provided important results
on the risks posed by groundwater-sourced pollutants to Great Lakes ecosystems. |
| Sommaire | (Résumé en langage clair et simple, non publié)
Volume des résumés pour la Commission géologique de l'Ontario et la commission geologique du Canada géoscience des eaux souterraines de la CGC
portes ouvertes avec conservation Ontario. |
| GEOSCAN ID | 313598 |
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