Canada is taking significant steps to address PFAS (“forever chemicals”)—a group of highly persistent substances that contaminate drinking water, soil, wildlife, and human bodies worldwide.
A recent article in Water Canada (https://lnkd.in/e4EsYDMy) highlights how Canada is moving beyond simply managing contamination towards a more comprehensive strategy that addresses PFAS throughout their lifecycle.
Recent actions by the Canadian government include:
– Concluding that the class of PFAS (excluding fluoropolymers) is toxic to human health and the environment under the Canadian Environmental Protection Act.
– Proposing a phased approach to PFAS risk management, beginning with firefighting foams, followed by consumer products such as cosmetics, food packaging, and textiles, and later addressing more complex sectors including medical devices and transportation.
– Introducing reporting requirements for 163 PFAS substances under the National Pollutant Release Inventory, improving transparency on releases to air, water, and land.
– Establishing a drinking water objective of 30 ng/L for the sum of 25 PFAS substances and implementing an interim standard of <50 ppb PFAS as an indicator for biosolids used as fertilizers (domestic and imported). This standard is now being enforced.
– Investing in the development of technologies capable of destroying PFAS in contaminated media.
How progressive are these Canadian standards in comparison to the EU?
Drinking water: 30 ng/L for the sum of 25 PFAS
Canada’s objective of 30 ng/L for the sum of 25 PFAS is more stringent than the EU Drinking Water Directive’s requirement of 100 ng/L for the sum of 20 PFAS and substantially below the EU’s alternative parameter of 500 ng/L for total PFAS. Health Canada itself explicitly notes these international comparisons.
However, there are a few important caveats:
- Canada’s 30 ng/L value is currently an objective rather than a legally binding national standard. Provinces and territories determine implementation.
- The EU’s 100 ng/L limit is legally binding under the Drinking Water Directive and must be implemented by Member States.
- Some European countries have gone much further than the EU minimum. For example, Denmark uses 2 ng/L for the sum of four PFAS, which is considerably more stringent than the Canadian objective.
So, if you compare Canada to the EU minimum standard, Canada looks more protective. If you compare Canada to the most progressive European countries, Canada is not leading.
Biosolids: <50 ppb PFAS
The biosolids measure may actually be the more noteworthy development.
A PFAS limit of <50 ppb (µg/kg) in biosolids used as fertilizer, coupled with enforcement, is quite ambitious. Across Europe, there is still no harmonized EU-wide PFAS limit for biosolids or sewage sludge applied to land. Regulation remains fragmented, with some countries developing their own approaches and many still relying primarily on monitoring, risk assessment, or restrictions on individual PFAS rather than enforceable group limits.
From a precautionary perspective, biosolids standards are particularly important because land application can be a major pathway for:
- contamination of agricultural soils,
- uptake into crops,
- groundwater contamination,
- long-term accumulation in the environment.
Many European NGOs and scientists have argued that PFAS contamination of sewage sludge represents one of the largest unresolved pathways for PFAS recirculation in a circular economy.
In short, Canada’s 30 ng/L drinking water objective for the sum of 25 PFAS is more stringent than the EU Drinking Water Directive’s 100 ng/L limit for the sum of 20 PFAS, although it remains an interim objective rather than a binding national standard. The accompanying enforcement of a <50 ppb PFAS threshold for biosolids used as fertilizers is particularly notable, as comparable enforceable PFAS limits for biosolids remain largely absent at the EU level. Together, these measures place Canada among the more proactive jurisdictions addressing PFAS as a class, although several European countries have adopted even more stringent drinking water standards for selected PFAS.
Notably, Canada recognizes that managing PFAS one chemical at a time is insufficient. Moving towards a class-based approach can help prevent regrettable substitutions and accelerate the protection of human health and the environment.
At the same time, remediation and treatment alone cannot solve the PFAS crisis. The most effective and affordable solution remains to prevent pollution at its source by eliminating unnecessary uses of PFAS and promoting safer alternatives.
Transparency, public access to information, pollution prevention, and international cooperation will be essential to ensuring that the PFAS tap is turned off.
