Ministère de l’Environnement, de la Lutte contre les changements climatiques, de la Faune et des Parcs
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Regulation respecting the quality of drinking water and supporting documents

Amendments to the Regulation respecting the quality of drinking water
Amendments to the Regulation respecting the quality of drinking water (RQEP) were published in the Gazette officielle du Québec on June 17, 2026. Several of these amendments come into force as early as July 2, 2026, and others will follow in October 2026. To find out which sections are concerned, their date of coming into force and to understand the reason for these amendments, consult the document (PDF, 525 KB, French) summarizing all the amendments made.

The Regulation respecting the quality of drinking water contributes to ensuring that Québec’s population is provided with quality drinking water. In force since June 2001, it contains requirements for thousands of entities in charge of drinking water distribution systems, including municipalities, private enterprises, educational institutions, health and social services institutions and tourist establishments. In addition to the amendments made in June 2026, a manganese standard (French)This hyperlink will open in a new window. has been in force since June 2024.

  • To better understand the Regulation
  • Requirements for those in charge of drinking water distribution systems
  • Special terms and conditions for certain systems
  • Tools and models for those in charge of systems
  • If a problem with water quality is detected

    • To better understand the full Regulation, consult the following:

    The Regulation contains requirements for those in charge of water distribution systems, particularly with respect to:

    Special terms and conditions apply to certain distribution system categories, including:

    The Ministère provides models and tools to facilitate the work of those in charge of distribution systems affected by certain requirements:

    If problems with the microbiological quality of water are detected, consult the following pages:

    If you have questions concerning the Regulation at any time, don’t hesitate to contact your regional office of the Ministère

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