Testmark Laboratories Ltd. (Thunder Bay)

Testmark Laboratories Ltd. (Thunder Bay) is on the official list: Ontario MECP licence; accepts private well samples. Updated 2026-10-18.

Thunder Bay, Ontario

Call ahead: certification lists include some labs that only test for public water systems.

Certified by: Ontario MECP licence
Accepts samples from private citizens: ✓
Tests it is certified for: Lead
Official scope: Licence classes: Inorganic / Microbiological / Physical/Others / Lead
Contact: 1131 Central Ave., Unit 2, Thunder Bay, ON P7B 7C9
(807) 333-0921
thunder.bay@testmark.ca
Source: Ontario MECP – List of Licensed Laboratories
Licence: Open Government Licence – Ontario
Record refreshed: 2026-10-18

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