Guidelines for Canadian Drinking Water Quality: Guideline Technical Document – Perfluorooctane Sulfonate (PFOS)

From Health Canada


Health Canada is reviewing the guidelines and screening values for PFAS in drinking water. A technical document is available for public consultation from February 11, 2023 to April 12, 2023.


This guideline technical document reviews and assesses all identified health risks associated with PFOS in drinking water. It incorporates available studies and approaches and takes into consideration the availability of appropriate analytical methods and treatment technology. Based on this review, the drinking water guideline for PFOS is a maximum acceptable concentration (MAC) of 0.0006 mg/L (0.6 µg/L), based on the general population. This document was endorsed by the Federal-Provincial-Territorial Committee on Drinking Water of the Federal-Provincial-Territorial Committee on Health and the Environment.

Who this document is for

  1. Regulatory agencies
  2. Academic community
  3. Health protection agencies
  4. Public drinking water utilities, such as drinking water treatment plants

View complete guideline
Download PDF (1 MB, 114 pages)

Details and history

Published: December 7, 2018

Consulted: June 30 – September 2, 2016 (see all consultations)

Part of topic(s): Guidelines for Canadian Drinking Water Quality

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Water and Air Quality Bureau, Health Canada
3rd Floor, 269 Laurier Avenue West
Address Locator 4903D
Ottawa, ON K1A 0K9

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