Public Health Inspector's Guide

The Public Health Inspector's (PHI) Guide to Environmental Microbiology Laboratory Testing is designed to support effective public health practice, ensuring that inspectors have timely information on PHO’s laboratory environmental microbiology services and expertise.

Consistent with O. Reg. 671/92 of the French Language Services Act, laboratory testing information on this page is only available in English because it is scientific or technical in nature and is for use only by qualified health care providers and not by members of the public.

The Public Health Inspector’s Guide supports local boards of health and public health inspectors in meeting their obligations outlined in relevant Ontario legislation, standards and protocols. 

The document outlines:

  • the environmental microbiology tests performed at PHO’s laboratories
  • provides detailed sample collection and submission instructions
  • states the laboratory acceptance criteria
  • advises on test results interpretation

Download the full guide

Quick Access

Updated 13 Sep 2024