Hydrogen Sulphide Risks

Hydrogen sulphide (H2S) is a colourless gas that smells like rotten eggs. At very high levels, hydrogen sulphide can be flammable and lethal.

If hydrogen sulphide or other hazardous chemicals are leaking in your area, contact the Spills Action Centre of the Ministry of Environment by calling 416-325-3000, 1-800-268-6060 (toll-free), or 1-855-889-5775 (TTY).

Read more about Hydrogen sulphide on the Health Unit website.