Consultation on ozone and its associated end-use products, Proposed Re-evaluation Decision PRVD2026-05
Current status: Open
Opened on 21 October 2026 and will close for consultation on 19 January 2027.
Health Canada, has conducted all evaluations considered necessary with respect to the health and environmental risks and value of ozone and its associated end-use products based on available scientific information.
Ozone is a soluble gas that, when dissolved in water, functions as a powerful oxidizing agent and a broad-spectrum antimicrobial. Ozone is used to control zebra mussels in water intake systems and as a sanitizing/disinfecting agent for hard non-porous surfaces, including food contact surfaces. Aqueous ozone kills bacteria and fungi by damaging the cytoplasmic membrane through ozonolysis and also by oxidation of proteins which leads to a loss of organelle function. It kills molluscs (zebra mussels) by oxidation of organic matter which leads to toxic and lethal effects.
For more information on the proposed decision open the “summary of the Proposed Re-evaluation Decision”.
How to get involved
This consultation is open for comment from 21 October 2026 to 19 January 2027 (90 calendar days).
To comment on PRVD2026-05:
- Step 1: Open the summary of the proposed re-evaluation decision to access the document.
- Step 2: Submit comments to the Pesticides Regulatory Directorate Publications Section on or before 19 January 2027.
Please be sure to include the title of the consultation document on which you are commenting.
Health Canada will consider all comments that are directly related to the proposed decision, received up to 90 days from the date of publication of this document (by 19 January 2027) before making a final decision on the proposed re-evaluation for ozone and its associated end-use products.
Reporting to the people of Canada
Health Canada will make the results of this consultation available on this website. Once the decision is finalized, Health Canada will post a Re-evaluation Decision on the Pesticides and Pest Management Reports and Publications portion of Canada.ca.
If you have any questions, contact the Pesticides Information Service.
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Contact Us
Health Canada
Healthy Environments and Consumer Safety Branch
Pesticides Regulatory Directorate
2 Constellation Drive, Ottawa, ON, K1A 0K9
Address Locator: 2608A
Email: pesticides-info@hc-sc.gc.ca