McMaster University

McMaster University

Waste Disposal

Our work environment generates different types of waste. We produce recyclables, regular garbage or hazardous wastes every day. It is important to direct waste so it can be managed effectively. You should ensure incompatible wastes are not mixed together as this may cause disposal problems.

Chemical wastes must be removed from the laboratory at least every 90 days. The waste can be removed more frequently if the amount generated cannot be properly stored in the laboratory.

To dispose of chemical waste you must follow the FHS chemical waste procedure. Once the chemicals are listed on the form send it by e-mail to Janet Mannella in the FHS Safety Office. Arrangements will be made with you to manage your chemical waste.

If you have any questions or concerns on waste disposal contact Janet Mannella at extension 22402 or by e-mail to

The following information will help you direct waste to the proper waste stream.

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