June 30, 2025 is the deadline for facilities to submit a report for 2024 data. Use the Registration ID (R-Code) you received in the mail. Facilities are not required to report data from 2019 to 2023. Find information including which facilities are required to or not required to submit a report, tools and calculators, a step-by-step guide to submitting your report and frequently asked questions.
Registration for ChemTRAC reporting workshops is free and strongly recommended, especially for facilities that are new to ChemTRAC. If your business is exempt from reporting, see our guidance video on how to submit your report.
ChemTRAC requires businesses to report the use and release of 25 priority substances (chemicals) that are in Toronto’s air environment at levels of concern for health to Toronto Public Health (TPH) each year under the Environmental Disclosure and Reporting Bylaw. ChemTRAC reviews and discloses this data to the public.
You can learn more about ChemTRAC and explore chemical data reported by businesses below.