The National Pollutant Release Inventory (NPRI) requires facilities to disclose release and transfer of approximately 324 chemicals to Environment Canada. Annual reports contain detailed information about onsite air, water and land emissions, as well as document the transfer of hazardous waste for off-site disposal, treatment or recycling.
Companies with 10+ employees, using more than 10 tonnes of listed substances and in concentrations greater than one percent is required to report to the NPRI.
The reports are publicly accessible online: www.ec.gc.ca/npri
The database of reports is searchable by location such as a street, town, chemical, or facility name.
You can also find out similar information including profiles on each chemical at the more user friendly website Pollution Watch which is facilitated by the Canadian Environmental Law Association and Environmental Defence.