List of Licensed Laboratories

This is a list of licensed and out-of-province eligible laboratories that can test Ontario drinking water. Prior to submitting samples, please contact the licensed laboratory to determine if samples will be accepted.

Ministry contact: Laboratory Licensing and Compliance Program

Additional information

Tags: drinking water drinking water

testing testing

lead lead

inorganic inorganic

organic organic

Microbiological Microbiological

Licensed laboratories Licensed laboratories

Eligible laboratories Eligible laboratories
Geographic coverage: Ontario
Source URL/Address: https://www.ontario.ca/page/list-licensed-laboratories
Maintainer: Laboratory Licensing and Compliance Program
Author: Laboratory Licensing and Compliance Program
Author Email: Laboratory Licensing and Compliance Program
Maintainer branch: Environmental Investigations and Enforcement Branch
Last Validated Date: December 15, 2025
Update frequency: As required

List of Licensed Laboratories

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List of Licensed Laboratories English

Last Updated: February 2, 2026

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List of Licensed Laboratories French

Last Updated: February 2, 2026

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List of Licensed Laboratories

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List of Licensed Laboratories

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