Per- and polyfluoroalkyl substances (PFAS), commonly known as "forever chemicals," are persistent synthetic compounds used in a variety of products, including firefighting foams, non-stick cookware, and water-resistant textiles. In Canada, PFAS contamination of drinking water is often linked to the historical use of firefighting foams during training exercises at airports and military bases. These activities have resulted in PFAS migrating into groundwater and affecting private residential wells.
Exposure to PFAS in drinking water has been associated with health risks such as immune suppression, thyroid disruption, and an increased risk of certain cancers. As a result, there has been a significant rise in class actions alleging property value diminution due to the stigma of PFAS-contaminated drinking water. Real estate professionals should be aware of this emerging issue.
Although PFAS contamination is a national concern, this discussion focuses on its specific implications for real estate professionals and property owners in Ontario.