Company lists · Data refreshed September 2026

Top 25 Environmental audit companies based in Canada

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

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 66 companies tracked

RevenueBase identified 66 environmental audit companies headquartered in Canada as of September 2026 and tracks 817 professional contacts across them, including 450 with verified work emails. Calgary is the largest hub.

This list covers environmental audit companies 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

66Companies

817Contacts tracked

450Verified emails

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The 25 largest environmental audit companies based in Canada

Ranked by team size

Top 25 of 66 environmental audit companies 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 audit companies: 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	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
2	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
3	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
4	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
5	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
6	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
7	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
8	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
9	CD Sonter LTD	Partial evidence	Toronto, ON, CanadaHQ checked Sep 19, 2026	11-50	28 contacts →
	Partial 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
10	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
11	Watters Environmental Group INC	Partial evidence	Vaughan, ON, CanadaHQ checked Sep 19, 2026	11-50	17 contacts →
	Partial evidence “Watters is an environmental consultancy that solves complex environmental problems by providing strategic solutions founded on good science and business practicality.” Source: RevenueBase Database · checked Sep 19, 2026
12	KH Environmental Consulting INC	Partial evidence	Niagara, ON, CanadaHQ checked Sep 19, 2026	1-10	14 contacts →
	Partial evidence “Supporting industry by providing environmental regulatory compliance services and implementing sustainable compliance programs.” Source: RevenueBase Database · checked Sep 19, 2026
13	Lehder Environmental Services	Partial evidence	Point Edward, ON, CanadaHQ checked Sep 19, 2026	11-50	10 contacts →
	Partial evidence “LEHDER Environmental Services is an environmental consulting company focused on providing Excellence in Industrial Air Quality Services.” Source: RevenueBase Database · checked Sep 19, 2026
14	Envirotech Engineering Corp	Partial evidence	Calgary, AB, CanadaHQ checked Sep 19, 2026	1-10	10 contacts →
	Partial evidence “Envirotech Engineering is a Calgary based company providing a broad range of Environmental Consulting, Project Management & Regulatory Compliance services.” Source: RevenueBase Database · checked Sep 19, 2026
15	Progestech INC	Partial evidence	Trois-rivieres, QC, CanadaHQ checked Sep 19, 2026	11-50	9 contacts →
	Partial evidence “Progestech Inc is a renewables and environment company based out of 303, Dessureault, Trois-Rivieres, Quebec, Canada.” Source: RevenueBase Database · checked Sep 19, 2026
16	Arletta Environmental Consulting Corp	Partial evidence	Calgary, AB, CanadaHQ checked Sep 19, 2026	11-50	8 contacts →
	Partial evidence “Arletta Environmental Consulting Inc.” Source: RevenueBase Database · checked Sep 19, 2026
17	Green Plan LTD	Indirect evidence	Edmonton, AB, CanadaHQ checked Sep 19, 2026	11-50	5 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
18	Sage Ecological Solutions INC	Partial evidence	Calgary, AB, CanadaHQ checked Sep 19, 2026	1-10	5 contacts →
	Partial evidence “SAGE Ecological Solutions Inc.(SAGE) is a Calgary-based environmental consulting firm that thrives on collaboration and is dedicated to working with your team to find balanced…” Source: RevenueBase Database · checked Sep 19, 2026
19	Welburn Consulting Limited	Partial evidence	Ottawa, ON, CanadaHQ checked Sep 19, 2026	1-10	4 contacts →
	Partial evidence “Bringing together more than 30 years’ experience in environmental engineering, policy analysis and small business, we created a consulting firm that truly puts our clients first.” Source: RevenueBase Database · checked Sep 19, 2026
20	Quebec Association Of Environmental Auditing	Partial evidence	Montréal, QC, CanadaHQ checked Sep 19, 2026	201-500	4 contacts →
	Partial evidence “Quebec's Association of Environmental Auditing (QAEA) is a not-for-profit organization accredited by the Standards Council of Canada (SCC) whose mission is to promote the practice…” Source: RevenueBase Database · checked Sep 19, 2026
21	AIR & Odour INC	Indirect evidence	Boucherville, QC, CanadaHQ checked Sep 19, 2026	1-10	3 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
22	Auditex HSE INC	Indirect evidence	Brossard, QC, CanadaHQ checked Sep 19, 2026	1-10	2 contacts →
	Indirect evidence “Auditex HSE Inc, nouvelle filiale de Terrapex Environnement Ltée, se distingue par son offre de services de gestion et de vérification pour les domaines de l'Hygiène industrielle…” Source: RevenueBase Database · checked Sep 19, 2026
23	Enviro Management INC	Partial evidence	Vaughan, ON, CanadaHQ checked Sep 19, 2026	1-10	2 contacts →
	Partial evidence “Enviro Management Inc.(EMI) is an environmental consulting firm based in the Greater Toronto Area.” Source: RevenueBase Database · checked Sep 19, 2026
24	Pinchin West LTD	Indirect evidence	Calgary, AB, CanadaHQ checked Sep 19, 2026	n/a	2 contacts →
	Indirect evidence “20 Years of PHH.” Source: RevenueBase Database · checked Sep 19, 2026
25	Bravo Zulu Strategy	Partial evidence	Victoria, BC, CanadaHQ checked Sep 19, 2026	1-10	1 contacts →
	Partial evidence “Your partner navigating environmental assessment and 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 audit companies. 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 audit companies.
Partial evidence: Its own public description names part of environmental audit companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name environmental audit companies. 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 66 environmental audit companies based in Canada

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Environmental audit companies based in Canada at a glance

As of Sep 19, 2026

55.1%Verified-email coverage

12.4Average contacts per company

1-10Median size (employees)

12.1%Largest-city concentration · Calgary

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

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 66 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 audit companies, 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 audit companies”. 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 audit companies), 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 audit companies, 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, 450 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 audit companies, 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 audit companies are there based in Canada?

RevenueBase identified 66 environmental audit companies 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?

Keystone Environmental, headquartered in Burnaby, tops this list with the largest team on record.

Which city has the most environmental audit companies?

Calgary leads with 8 headquartered companies, followed by Montreal (7) and Vaughan (3).

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 450 verified decision-maker contacts tracked across these 66 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.