In March 2025, Environment and Climate Change Canada (ECCC) and Health Canada jointly proposed to include boric acid, its salts, and precursor substances in Part 2 of Schedule 1 (Toxic Substances List) of the Canadian Environmental Protection Act, 1999 (CEPA). This regulatory initiative aims to enhance oversight and reduce potential risks to both the environment and public health associated with these substances. The proposal follows a scientific assessment conducted under Section 68 of CEPA.

Assessment Findings and Scientific Justification

The updated draft assessment identifies that boron-containing substances capable of releasing boric acid through environmental or physiological transformation processes—such as hydrolysis, oxidation, digestion, or metabolism—meet the criteria for toxicity under Section 64 of CEPA. These conclusions are based on potential threats to environmental biodiversity, ecosystem function, and human health. The scope of the assessment includes all boron-containing substances listed on Canada’s Domestic Substances List that could release boric acid under relevant conditions, such as specific pH levels and concentrations.

Public Consultation and Stakeholder Engagement

Alongside the proposal, the government released an updated Risk Management Scope document. A public consultation period is currently open until May 7, 2025, during which stakeholders are invited to submit written feedback. Submissions may address:

• The proposed risk management measures
  

• Supporting scientific evidence or comments related to the assessment
  

Further information, including technical documentation and submission guidelines, is available on the Government of Canada’s Chemical Substances portal.

Stay ahead in sustainability compliance with Global PCCS —where expert insights meet the latest regulations. Unlock a future where compliance fuels sustainability, helping your business thrive in a greener, well-regulated world. For more information, contact us at info@globalpccs.com