Company lists · Data refreshed September 2026

Top 25 Brownfield remediation firms worldwide

Name: Brownfield remediation firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 3,544 companies tracked

RevenueBase identified 3,544 brownfield remediation firms worldwide as of September 2026 and tracks 57,386 professional contacts across them, including 19,866 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers brownfield remediation firms worldwide, 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. Country and city lists for brownfield remediation firms follow the table.

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

3,544Companies

57,386Contacts tracked

19,866Verified emails

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The 25 largest brownfield remediation firms worldwide

Ranked by team size

Top 25 of 3,544 brownfield remediation firms worldwide, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to brownfield remediation 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	Montrose Environmental Group	Indirect evidence	Little Rock, AR, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,529 contacts →
	Indirect evidence “Onterris (formerly Montrose Environmental Group) was one of the first to see environmental responsibility as not just an imperative but as a strategic asset.” Source: RevenueBase Database · checked Sep 19, 2026
2	Weston Solutions, INC	Indirect evidence	West Chester, PA, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,441 contacts →
	Indirect evidence “Weston Solutions, Inc.(Weston) is a 100% employee-owned environmental and infrastructure services firm committed to safety and providing measurable client value.” Source: RevenueBase Database · checked Sep 19, 2026
3	ENI Rewind	Indirect evidence	San Donato Milanese, ItalyHQ checked Sep 19, 2026	1,001-5,000	543 contacts →
	Indirect evidence “We are Eni’s environmental company active for over 20 years, in giving new life, according to the principles of the circular economy, to industrial land, water and waste through…” Source: RevenueBase Database · checked Sep 19, 2026
4	Entact, LLC	Partial evidence	Westmont, IL, United StatesHQ checked Sep 19, 2026	501-1,000	483 contacts →
	Partial evidence “ENTACT is the partner of choice in solving our customer's most complex environmental remediation and geotechnical infrastructure challenges.” Source: RevenueBase Database · checked Sep 19, 2026
5	Tomlinson Group Of Companies	Indirect evidence	Ottawa, ON, CanadaHQ checked Sep 19, 2026	501-1,000	475 contacts →
	Indirect evidence “Starting with a single-axle dump truck in 1952, R.W.” Source: RevenueBase Database · checked Sep 19, 2026
6	Clean Harbors India	Indirect evidence	Hyderabad, IndiaHQ checked Sep 19, 2026	1,001-5,000	450 contacts →
	Indirect evidence “Clean Harbors India has been strategically established as the Global Capability Center (GCC) to serve our parent company.” Source: RevenueBase Database · checked Sep 19, 2026
7	ROUX	Indirect evidence	Islandia, NY, United StatesHQ checked Sep 19, 2026	201-500	433 contacts →
	Indirect evidence “Founded 40 years ago, Roux is recognized for being a highly effective, client-focused environmental consulting and management firm.” Source: RevenueBase Database · checked Sep 19, 2026
8	Hydrogeologic, INC	Partial evidence	Reston, VA, United StatesHQ checked Sep 19, 2026	501-1,000	430 contacts →
	Partial evidence “HydroGeoLogic, Inc.(HGL) is an employee-owned company with over 36 years of experience developing innovative, effective, and sustainable engineering and remediation solutions to…” Source: RevenueBase Database · checked Sep 19, 2026
9	Brézillon	Indirect evidence	Margny-lès-compiègne, FranceHQ checked Sep 19, 2026	51-200	286 contacts →
	Indirect evidence “Entreprise spécialisée en génie environnemental, Brézillon agit depuis près de 30 ans pour préserver, restaurer et valoriser les terrains sur l’ensemble du territoire national.” Source: RevenueBase Database · checked Sep 19, 2026
10	Valgo Groupe	Indirect evidence	Paris, FranceHQ checked Sep 19, 2026	501-1,000	279 contacts →
	Indirect evidence “VALGO - Régénérer, Rénover, Revaloriser Entreprise internationale spécialisée dans la réhabilitation des sites pollués, VALGO transforme les sols, bâtiments et infrastructures…” Source: RevenueBase Database · checked Sep 19, 2026
11	Sevenson Environmental Services INC	Indirect evidence	Niagara Falls, NY, United StatesHQ checked Sep 19, 2026	501-1,000	277 contacts →
	Indirect evidence “Sevenson Environmental Services, Inc.” Source: RevenueBase Database · checked Sep 19, 2026
12	Environmental Restoration LLC	Partial evidence	Saint Louis, MO, United StatesHQ checked Sep 19, 2026	201-500	273 contacts →
	Partial evidence “Environmental Restoration LLC (ER) is 100% employee-owned and provides Environmental Site Remediation, Construction and Emergency Response services for hazardous waste materials…” Source: RevenueBase Database · checked Sep 19, 2026
13	Jbs&g	Indirect evidence	Sydney, AustraliaHQ checked Sep 19, 2026	201-500	262 contacts →
	Indirect evidence “Established in 1996, JBS & G is one of Australia’s leading environmental consultancies with offices in Sydney, Melbourne, Perth, Adelaide, Brisbane, Canberra, Darwin, Wollongong…” Source: RevenueBase Database · checked Sep 19, 2026
14	Enviropacific	Indirect evidence	Macquarie Park, AustraliaHQ checked Sep 19, 2026	201-500	260 contacts →
	Indirect evidence “Enviropacific is committed to working towards creating safer environments and sustainable communities.” Source: RevenueBase Database · checked Sep 19, 2026
15	Forgen	Indirect evidence	Centennial, CO, United StatesHQ checked Sep 19, 2026	201-500	255 contacts →
	Indirect evidence “At Forgen, we leave the planet better than we found it.” Source: RevenueBase Database · checked Sep 19, 2026
16	Alliance Environmental Group, LLC	Indirect evidence	Azusa, CA, United StatesHQ checked Sep 19, 2026	501-1,000	254 contacts →
	Indirect evidence “Alliance is one of the most experienced and trusted environmental contractors in California.” Source: RevenueBase Database · checked Sep 19, 2026
17	QM Environmental	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 19, 2026	201-500	253 contacts →
	Indirect evidence “QM Environmental is a leading Canadian environmental and industrial services provider, trusted for over three decades to deliver complex projects safely, responsibly, and with…” Source: RevenueBase Database · checked Sep 19, 2026
18	Cascade Environmental, LLC	Partial evidence	Bothell, WA, United StatesHQ checked Sep 19, 2026	1,001-5,000	248 contacts →
	Partial evidence “CASCADE is the leading provider of environmental and geotechnical drilling, site investigation and environmental remediation.” Source: RevenueBase Database · checked Sep 19, 2026
19	Environmental Works, INC	Indirect evidence	Springfield, MO, United StatesHQ checked Sep 19, 2026	201-500	238 contacts →
	Indirect evidence “Environmental Works, Inc.(EWI) offers truly comprehensive environmental solutions for a variety of industries, businesses, and municipalities.” Source: RevenueBase Database · checked Sep 19, 2026
20	TSL Engenharia, Manutenção E Preservação Ambiental S A	Indirect evidence	São Paulo, BrazilHQ checked Sep 19, 2026	201-500	238 contacts →
	Indirect evidence “TSL has been in the market for more than 30 years.” Source: RevenueBase Database · checked Sep 19, 2026
21	Miller Environmental Group, INC	Partial evidence	Calverton, NY, United StatesHQ checked Sep 19, 2026	201-500	231 contacts →
	Partial evidence “Miller Environmental Group is a leading environmental response, remediation and restoration services company, providing industry, government, commercial and residential customers…” Source: RevenueBase Database · checked Sep 19, 2026
22	Envirocon	Indirect evidence	Missoula, MT, United StatesHQ checked Sep 19, 2026	201-500	225 contacts →
	Indirect evidence “Envirocon safely and reliably delivers projects that protect, remediate, and restore our environment for commercial and government clients nationwide.” Source: RevenueBase Database · checked Sep 19, 2026
23	Patriot Environmental Services	Indirect evidence	Signal Hill, CA, United StatesHQ checked Sep 19, 2026	201-500	223 contacts →
	Indirect evidence “Patriot Environmental Services, a Crystal Clean company, is a leading environmental service provider with clients throughout the Southwestern United States.” Source: RevenueBase Database · checked Sep 19, 2026
24	LAMOR	Indirect evidence	Porvoo, FinlandHQ checked Sep 19, 2026	501-1,000	223 contacts →
	Indirect evidence “Lamor is one of the world’s leading providers of environmental solutions.” Source: RevenueBase Database · checked Sep 19, 2026
25	Cape Environmental Management INC	Partial evidence	Norcross, GA, United StatesHQ checked Sep 19, 2026	51-200	221 contacts →
	Partial evidence “CAPE is an award-winning environmental remediation and infrastructure construction firm with a history of delivering excellence since 1985.” 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: brownfield remediation 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 brownfield remediation firms.
Partial evidence: Its own public description names part of brownfield remediation firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name brownfield remediation 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 3,544 brownfield remediation firms worldwide

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Brownfield remediation firms worldwide at a glance

As of Sep 19, 2026

34.6%Verified-email coverage

16.2Average contacts per company

11-50Median size (employees)

1.6%Largest-city concentration · Sao Paulo

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

1,533

11-50

1,366

51-200

463

201-500

109

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

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 brownfield remediation 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.
Coverage: Every country. Country and city lists for brownfield remediation firms are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “brownfield remediation 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 brownfield remediation 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 brownfield remediation firms, and records with no verified work email.
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, 19,866 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.

Brownfield remediation firms by location

12 lists · largest first

Every Brownfield remediation firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

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 brownfield remediation 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 brownfield remediation firms are there worldwide?

RevenueBase identified 3,544 brownfield remediation firms worldwide 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?

Montrose Environmental Group, headquartered in Little Rock, tops this list with the largest team on record.

Which country has the most brownfield remediation firms?

The United States leads with 1,523 companies, followed by Canada (228) and Brazil (205). Every brownfield remediation firms list by country and city is linked on this page.

Which city has the most brownfield remediation firms?

Sao Paulo leads with 57 headquartered companies, followed by Calgary (32) and Houston (21).

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 19,866 verified decision-maker contacts tracked across these 3,544 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.