The Ontario Superior Court of Justice decision in Egan v. National Research Council of Canada, 2026 ONSC 1429, is a landmark in Canadian environmental class action law. For the first time, punitive damages have been certified as a common issue against the federal government in a PFAS (“forever chemical”) drinking water contamination class action, based on the government’s delay in notifying residents of potential contamination.
The claim for punitive damages is for $2 million and is distinct from the separate $40 million claim for compensation related to the diminution in class members’ property value due to the stigma associated with PFAS contamination in their drinking water.
Legal Context and Procedural History
The plaintiffs allege that the National Research Council of Canada (NRC) failed to warn residents about PFAS contamination risks to their properties and drinking water. They claim NRC knew, or ought to have known, of the risk as early as March 2013, but did not notify residents until December 2015—a 2.5-year delay forming the basis for punitive damages.
Key Evidence Relied Upon
The plaintiffs’ motion to certify punitive damages as a common issue was supported by a substantial evidentiary record, including:
- Historical Environmental Reports (2004–2013)
- Ontario Ministry of the Environment, Conservation and Parks, and Internal Federal Government Innovation, Science and Economic Development Canada (ISED) Critiques, and
- NRC witness testimony on NRC failure to follow Ministry advice and lack of offsite groundwater testing.
The Court’s Reasoning on Punitive Damages
The court reiterated that punitive damages require “malicious, oppressive and high-handed” conduct—a marked departure from ordinary standards. The evidence of NRC’s awareness, failure to heed recommendations, and delayed notification could, if proven, meet this threshold:
“I am not satisfied that if this conduct or lack thereof is proven that there is no reasonable prospect that punitive damages could be awarded. The failure to warn the neighbouring residents that their drinking water was or may be contaminated by PFAS chemicals may be found to ‘offend the court’s sense of decency.’ For this reason, the amendment to the pleadings regarding punitive damages is granted.” (para 21)
Broader Legal Significance
This decision signals a shift in Canadian environmental law, highlighting the role of class actions in holding institutions accountable for environmental harm and associated impacts on residential property value. It clarifies the evidentiary threshold for punitive damages claims and underscores the importance of timely, precautionary action by public bodies, especially regarding PFAS contamination in drinking water.
As PFAS contamination remains a national concern, this precedent will likely influence future environmental class actions and the remedies available to affected communities. The decision highlights the increasing scrutiny of governmental bodies regarding environmental contamination and the potential for significant liability, including punitive damages, when there is evidence of knowledge and inaction.
Mann Lawyers PFAS Class Action Practice
In Ontario, the Mann Lawyers Environmental Law Group is litigating class actions involving sites such as Mississippi Mills (Egan et al. v. National Research Council of Canada) and CFB North Bay and the Jack Garland Airport in North Bay (Sway and Currie v. The Attorney General of Canada and the Corporation of the City of North Bay). These class actions seek damages on behalf of hundreds of homeowners who allege that the migration of PFAS from federally operated facilities has diminished their property values due to the resulting stigma associated with their PFAS-contaminated groundwater wells.
This blog post was written by Michael Hebert member of the Mann Lawyers Environmental Law team and Nathan Adams (primary author), member of the Mann Lawyers Environmental Law team. Michael can be reached at 613-369-0360 or at [email protected] and Nathan at 613-369-0380 or at [email protected].
