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Drinking water, wastewater and rainwater

Drinking water, wastewater and rainwater

Information on drinking water quality and protection, wastewater treatment and stormwater management in Québec. Rules and requirements to protect public health and the environment.

Drinking water

Drinking water intended for consumption must be treated in accordance with current regulations. Whether it comes from a water treatment plant or a well, it must be of high quality and used sparingly.

Rainwater

Understand stormwater management in Québec, the environmental impacts of runoff and the ministry’s requirements for reducing pollution, erosion and flood risks.

Last update: October 14, 2026