Company lists · Data refreshed September 2026

Top 25 Environmental auditing firms based in Canada

Name: Environmental auditing firms based in Canada
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 154 companies tracked

RevenueBase identified 154 environmental auditing firms headquartered in Canada as of September 2026 and tracks 2,503 professional contacts across them, including 1,354 with verified work emails. Calgary is the largest hub.

This list covers environmental auditing firms headquartered in Canada, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 19, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 19, 2026 86% judged on-target in blind review

154Companies

2,503Contacts tracked

1,354Verified emails

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The 25 largest environmental auditing firms based in Canada

Ranked by team size

Top 25 of 154 environmental auditing firms based in Canada, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to environmental auditing firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Vertex Resource Group LTD	Partial evidence	Sherwood Park, AB, CanadaHQ checked Sep 19, 2026	1,001-5,000	471 contacts →
	Partial evidence “Since 1962, Vertex has been a leading North American provider of environmental services.” Source: RevenueBase Database · checked Sep 19, 2026
2	PGL Environmental Consultants	Partial evidence	Vancouver, BC, CanadaHQ checked Sep 19, 2026	51-200	186 contacts →
	Partial evidence “PGL Environmental Consultants consistently provides clients with a high level of support and confidence in our environmental management and planning decisions by combining…” Source: RevenueBase Database · checked Sep 19, 2026
3	Keystone Environmental	Partial evidence	Burnaby, BC, CanadaHQ checked Sep 19, 2026	51-200	158 contacts →
	Partial evidence “Keystone Environmental is a proudly Canadian (owned and operated) full service environmental consultancy helping businesses meet their environmental goals and objectives.” Source: RevenueBase Database · checked Sep 19, 2026
4	Associated Environmental Consultants	Partial evidence	Vernon, BC, CanadaHQ checked Sep 19, 2026	501-1,000	105 contacts →
	Partial evidence “Associated Environmental Consultants are experts in environmental science and management with a passion for our work, our communities, and our environment.” Source: RevenueBase Database · checked Sep 19, 2026
5	ROE Environmental	Partial evidence	North Vancouver, BC, CanadaHQ checked Sep 19, 2026	11-50	98 contacts →
	Partial evidence “For more than 15 years, we operated as Sartori Environmental Inc, establishing an exceptional reputation for our reliable, responsible, and innovative approach.” Source: RevenueBase Database · checked Sep 19, 2026
6	Terrapex Environnement Ltée	Indirect evidence	Brossard, QC, CanadaHQ checked Sep 19, 2026	51-200	69 contacts →
	Indirect evidence “Terrapex Environnement Ltée est une firme de consultants multidisciplinaires en environnement.” Source: RevenueBase Database · checked Sep 19, 2026
7	Active Earth	Partial evidence	Burnaby, BC, CanadaHQ checked Sep 19, 2026	51-200	65 contacts →
	Partial evidence “Active Earth is an industry leading environmental consulting firm that was founded in 2007, specializing in Site Assessment and Remediation, Soil Testing and Disposal Management…” Source: RevenueBase Database · checked Sep 19, 2026
8	Canada North Environmental Services	Partial evidence	Saskatoon, SK, CanadaHQ checked Sep 19, 2026	51-200	62 contacts →
	Partial evidence “Canada North Environmental Services (CanNorth) provides a full range of environmental services and is 100% First Nations owned by the Lac La Ronge Indian Band, Saskatchewan’s…” Source: RevenueBase Database · checked Sep 19, 2026
9	Pesca Environment	Partial evidence	Carleton-sur-mer, QC, CanadaHQ checked Sep 19, 2026	51-200	60 contacts →
	Partial evidence “PESCA Environment assists you in the realization of your projects for more than 30 years.” Source: RevenueBase Database · checked Sep 19, 2026
10	Ecometrix Incorporated	Indirect evidence	Mississauga, ON, CanadaHQ checked Sep 19, 2026	11-50	56 contacts →
	Indirect evidence “Ecometrix rebranded as Egis in 2026.” Source: RevenueBase Database · checked Sep 19, 2026
11	H2lab	Indirect evidence	Sainte-agathe-des-monts, QC, CanadaHQ checked Sep 19, 2026	51-200	51 contacts →
	Indirect evidence “Lorsque vient le temps d’obtenir l’heure juste en matière d’analyses environnementales, les organisations des secteurs privés et publics peuvent compter sur H2Lab.” Source: RevenueBase Database · checked Sep 19, 2026
12	Envirochem Services INC	Partial evidence	North Vancouver, BC, CanadaHQ checked Sep 19, 2026	11-50	46 contacts →
	Partial evidence “We are your trusted environmental advisor since 1984.” Source: RevenueBase Database · checked Sep 19, 2026
13	S2s Environmental INC	Partial evidence	Pickering, ON, CanadaHQ checked Sep 19, 2026	11-50	44 contacts →
	Partial evidence “S2S Environmental is a specialist environmental consulting firm providing advice and services to stakeholders in the Real Estate sector.” Source: RevenueBase Database · checked Sep 19, 2026
14	ORTAM	Indirect evidence	Montréal, QC, CanadaHQ checked Sep 19, 2026	11-50	43 contacts →
	Indirect evidence “ENVIRONNEMENT (ORTAM-ENVIRO) Vérification de conformité selon la réglementation en vigueur Évaluations environnementales (phase I) Caractérisations environnementales (phases II et…” Source: RevenueBase Database · checked Sep 19, 2026
15	GCL Environmental LTD	Partial evidence	Calgary, AB, CanadaHQ checked Sep 19, 2026	11-50	42 contacts →
	Partial evidence “GCL Environmental Ltd.(GCL) is a results-driven environmental consulting firm.” Source: RevenueBase Database · checked Sep 19, 2026
16	Ecoventure INC	Partial evidence	Edmonton, AB, CanadaHQ checked Sep 19, 2026	11-50	39 contacts →
	Partial evidence “Established in 2002, Ecoventure Inc.(Ecoventure) is an environmental consulting firm serving Canada's petroleum and urban development industries.” Source: RevenueBase Database · checked Sep 19, 2026
17	AET Group INC	Partial evidence	Kitchener, ON, CanadaHQ checked Sep 19, 2026	11-50	39 contacts →
	Partial evidence “AET Group is an environmental consultancy firm committed to our ecological, financial and social responsibilities, working together collaboratively to find innovative solutions…” Source: RevenueBase Database · checked Sep 19, 2026
18	Groupe SCP Environnement INC	Indirect evidence	Montreal, QC, CanadaHQ checked Sep 19, 2026	51-200	39 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
19	Blue Heron Environmental	Partial evidence	Timmins, ON, CanadaHQ checked Sep 19, 2026	11-50	35 contacts →
	Partial evidence “Blue Heron is an environmental consulting firm headquartered in Timmins with an active presence in Sudbury, Thunder Bay, North Bay, Sault Ste.” Source: RevenueBase Database · checked Sep 19, 2026
20	Northwind Land Resources INC	Indirect evidence	Edmonton, AB, CanadaHQ checked Sep 19, 2026	11-50	35 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
21	Xcg, A Division Of Trace Associates INC	Indirect evidence	Kitchener, ON, CanadaHQ checked Sep 19, 2026	11-50	34 contacts →
	Indirect evidence “On February 1, 2024, XCG became a division of Trace Associates Inc.” Source: RevenueBase Database · checked Sep 19, 2026
22	Ecoscape Environmental Consultants LTD	Partial evidence	Kelowna, BC, CanadaHQ checked Sep 19, 2026	11-50	33 contacts →
	Partial evidence “Ecoscape is a full service environmental consulting firm located in Kelowna, BC.” Source: RevenueBase Database · checked Sep 19, 2026
23	OZA Inspections LTD	Partial evidence	Stoney Creek, ON, CanadaHQ checked Sep 19, 2026	11-50	30 contacts →
	Partial evidence “Oza Inspections Ltd is an Environmental Services company located in 215 Roberts Rd, Grimsby, ON, Canada.” Source: RevenueBase Database · checked Sep 19, 2026
24	CD Sonter LTD	Strong evidence	Toronto, ON, CanadaHQ checked Sep 19, 2026	11-50	28 contacts →
	Strong evidence “CD SONTER, an industry leader in sustainable solutions, provides waste auditing and environmental consulting, and project management of environmental awards and certifications.” Source: RevenueBase Database · checked Sep 19, 2026
25	X-Terra Environmental Services LTD	Partial evidence	Lloydminster, AB, CanadaHQ checked Sep 19, 2026	11-50	26 contacts →
	Partial evidence “X-Terra Environmental Services Ltd.(X-Terra) is a close network of Environmental Consultants and Professionals committed to serving industry, striving for environmental compliance…” Source: RevenueBase Database · checked Sep 19, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: environmental auditing firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names environmental auditing firms.
Partial evidence: Its own public description names part of environmental auditing firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name environmental auditing firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 154 environmental auditing firms based in Canada

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Environmental auditing firms based in Canada at a glance

As of Sep 19, 2026

54.1%Verified-email coverage

16.3Average contacts per company

1-10Median size (employees)

14.9%Largest-city concentration · Calgary

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured worldwide rather than for Canada, so it is reported there. Company counts and contact totals on this page are exact for Canada, over 154 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among environmental auditing firms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Canada whose own description of what they do matches “environmental auditing firms”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names environmental auditing firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among environmental auditing firms, and records with no verified work email. Companies headquartered outside Canada are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 1,354 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 19, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names environmental auditing firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many environmental auditing firms are there based in Canada?

RevenueBase identified 154 environmental auditing firms headquartered in Canada as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Vertex Resource Group LTD, headquartered in Sherwood Park, tops this list with the largest team on record.

Which city has the most environmental auditing firms?

Calgary leads with 23 headquartered companies, followed by Montreal (13) and Toronto (10).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 1,354 verified decision-maker contacts tracked across these 154 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 19, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.