Company lists · Data refreshed September 2026

Top 25 Waste management consulting firms worldwide

Name: Waste management consulting firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 14, 2026 16,648 companies tracked

RevenueBase identified 16,648 waste management consulting firms worldwide as of September 2026 and tracks 418,268 professional contacts across them, including 127,867 with verified work emails and 0 with mobile numbers. The United States is the largest market and Sao Paulo the largest hub.

This list covers waste management consulting 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 14, 2026. Country and city lists for waste management consulting 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 14, 2026 86% judged on-target in blind review

16,648Companies

418,268Contacts tracked

127,867Verified emails

0Mobile numbers

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The 25 largest waste management consulting firms worldwide

Ranked by team size

Top 25 of 16,648 waste management consulting firms worldwide, ranked by team size, largest first. Data refreshed Sep 14, 2026. RevenueBase Smart Search rates how each company's information relates to waste management consulting 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	Veolia	Indirect evidence	Aubervilliers, FranceHQ checked Sep 14, 2026	10001+	30,019 contacts →
	Indirect evidence “Veolia, a global leader in environmental services, works every day to build environmental security for the benefit of public health and the competitiveness of industries and…” Source: RevenueBase Database · checked Sep 14, 2026
2	WM	Indirect evidence	Houston, TX, United StatesHQ checked Sep 14, 2026	10001+	24,303 contacts →
	Indirect evidence “WM is North America's leading provider of integrated environmental solutions.” Source: RevenueBase Database · checked Sep 14, 2026
3	SUEZ	Partial evidence	Paris, FranceHQ checked Sep 14, 2026	10001+	21,549 contacts →
	Partial evidence “We provide essential services in the water and waste sectors to preserve resources and improve quality of life wherever we operate.” Source: RevenueBase Database · checked Sep 14, 2026
4	Republic Services	Partial evidence	Phoenix, AZ, United StatesHQ checked Sep 14, 2026	10001+	17,016 contacts →
	Partial evidence “Republic Services provides the most complete set of recycling, waste and environmental solutions from a single provider.” Source: RevenueBase Database · checked Sep 14, 2026
5	Tetra Tech	Indirect evidence	Pasadena, CA, United StatesHQ checked Sep 14, 2026	10001+	12,999 contacts →
	Indirect evidence “Tetra Tech is the leader in water, environment and sustainable infrastructure, providing high-end technical and engineering services for projects worldwide.” Source: RevenueBase Database · checked Sep 14, 2026
6	Clean Harbors	Indirect evidence	Norwell, MA, United StatesHQ checked Sep 14, 2026	10001+	8,924 contacts →
	Indirect evidence “Clean Harbors is North America’s leading provider of environmental and industrial services.” Source: RevenueBase Database · checked Sep 14, 2026
7	GFL Environmental INC	Strong evidence	Vaughan, ON, CanadaHQ checked Sep 14, 2026	10001+	6,179 contacts →
	Strong evidence “GFL Environmental is the only major diversified environmental services company in North America offering services in solid waste management, liquid waste management and soil…” Source: RevenueBase Database · checked Sep 14, 2026
8	ION Exchange India LTD	Strong evidence	Mumbai, IndiaHQ checked Sep 14, 2026	1,001-5,000	3,810 contacts →
	Strong evidence “At Ion Exchange India, we bring you total environment solutions - water treatment, liquid waste treatment & recycle, air pollution control, solid & hazardous waste management and…” Source: RevenueBase Database · checked Sep 14, 2026
9	BIFFA	Strong evidence	High Wycombe, United KingdomHQ checked Sep 14, 2026	5,001-10,000	3,253 contacts →
	Strong evidence “Founded in London in 1912, Biffa is a leading UK nationwide integrated waste management business providing collection, treatment, recycling and technologically-driven energy…” Source: RevenueBase Database · checked Sep 14, 2026
10	Cleanaway Waste Management	Strong evidence	Melbourne, AustraliaHQ checked Sep 14, 2026	5,001-10,000	3,005 contacts →
	Strong evidence “Cleanaway Waste Management Limited is Australia’s largest, publicly listed waste management company.” Source: RevenueBase Database · checked Sep 14, 2026
11	RE Sustainability Limited	Partial evidence	Hyderabad, IndiaHQ checked Sep 14, 2026	10001+	2,607 contacts →
	Partial evidence “Re Sustainability Limited (RE), a KKR-backed company, is one of Asia’s leading providers of comprehensive environment management services.” Source: RevenueBase Database · checked Sep 14, 2026
12	Veolia Australia & NEW Zealand	Strong evidence	Pyrmont, AustraliaHQ checked Sep 14, 2026	5,001-10,000	2,476 contacts →
	Strong evidence “Veolia Australia and New Zealand is a leading provider of environmental solutions across water and wastewater services, industrial cleaning, waste management and resource recovery…” Source: RevenueBase Database · checked Sep 14, 2026
13	Brown And Caldwell	Indirect evidence	Walnut Creek, CA, United StatesHQ checked Sep 14, 2026	1,001-5,000	2,473 contacts →
	Indirect evidence “Headquartered in Walnut Creek, Calif, Brown and Caldwell is an employee-owned firm with 2,100+ professionals serving clients locally and globally from 52 locations.” Source: RevenueBase Database · checked Sep 14, 2026
14	Civil & Environmental Consultants, INC	Partial evidence	Moon Township, PA, United StatesHQ checked Sep 14, 2026	1,001-5,000	2,145 contacts →
	Partial evidence “Civil & Environmental Consultants, Inc.(CEC) provides comprehensive market-oriented consulting services that advance the strategic business objectives of its clients.” Source: RevenueBase Database · checked Sep 14, 2026
15	Hazen And Sawyer	Indirect evidence	New York, NY, United StatesHQ checked Sep 14, 2026	1,001-5,000	2,100 contacts →
	Indirect evidence “As Hazen marks 75 years, we celebrate a legacy of absolute commitment to our clients while delivering the best technical work available anywhere.” Source: RevenueBase Database · checked Sep 14, 2026
16	Swca Environmental Consultants	Strong evidence	Phoenix, AZ, United StatesHQ checked Sep 14, 2026	1,001-5,000	1,629 contacts →
	Strong evidence “Founded on a commitment to sound science and creative solutions, SWCA is a leader in environmental and management consulting services.” Source: RevenueBase Database · checked Sep 14, 2026
17	Waste PRO USA	Partial evidence	Longwood, United StatesHQ checked Sep 14, 2026	1,001-5,000	1,560 contacts →
	Partial evidence “Waste Pro USA, Inc.” Source: RevenueBase Database · checked Sep 14, 2026
18	Montrose Environmental Group	Indirect evidence	Little Rock, AR, United StatesHQ checked Sep 14, 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 14, 2026
19	EMR	Indirect evidence	Warrington, United KingdomHQ checked Sep 14, 2026	1,001-5,000	1,478 contacts →
	Indirect evidence “We are a global leader in metal recycling with a heritage dating back to the 1950’s.” Source: RevenueBase Database · checked Sep 14, 2026
20	Averda	Strong evidence	Dubai, United Arab EmiratesHQ checked Sep 14, 2026	10001+	1,417 contacts →
	Strong evidence “For over 35 years, we have delivered integrated waste management services across multiple regions.” Source: RevenueBase Database · checked Sep 14, 2026
21	Rumpke Waste & Recycling	Partial evidence	Cincinnati, OH, United StatesHQ checked Sep 14, 2026	1,001-5,000	1,360 contacts →
	Partial evidence “Rumpke Waste and Recycling has been committed to keeping neighborhoods and businesses clean and green since 1932 by providing environmentally friendly waste disposal and recycling…” Source: RevenueBase Database · checked Sep 14, 2026
22	US Ecology Inc., A Republic Services Company	Indirect evidence	Boise, ID, United StatesHQ checked Sep 14, 2026	1,001-5,000	1,360 contacts →
	Indirect evidence “US Ecology is a Republic Services company.” Source: RevenueBase Database · checked Sep 14, 2026
23	Clean Earth	Indirect evidence	King Of Prussia, PA, United StatesHQ checked Sep 14, 2026	1,001-5,000	1,275 contacts →
	Indirect evidence “Veolia has completed the acquisition of Clean Earth, bringing together two organizations with a shared commitment to environmental stewardship, safety and operational excellence.” Source: RevenueBase Database · checked Sep 14, 2026
24	Secure	Strong evidence	Calgary, AB, CanadaHQ checked Sep 14, 2026	1,001-5,000	1,261 contacts →
	Strong evidence “SECURE is a leading waste management and energy infrastructure business headquartered in Calgary, Alberta.” Source: RevenueBase Database · checked Sep 14, 2026
25	Casella Waste Systems, INC	Partial evidence	Rutland, VT, United StatesHQ checked Sep 14, 2026	1,001-5,000	1,231 contacts →
	Partial evidence “Casella, headquartered in Rutland, Vermont, is one of the largest recyclers and most experienced fully integrated resource management companies in the Eastern United States.” Source: RevenueBase Database · checked Sep 14, 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: waste management consulting 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 waste management consulting firms.
Partial evidence: Its own public description names part of waste management consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name waste management consulting 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 16,648 waste management consulting firms worldwide

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Waste management consulting firms worldwide at a glance

As of Sep 14, 2026

30.6%Verified-email coverage

25.1Average contacts per company

11-50Median size (employees)

1.5%Largest-city concentration · Sao Paulo

Sep 14, 2026Page data refreshed

Companies by employee count

1-10

7,616

11-50

5,514

51-200

2,199

201-500

653

501-1,000

228

1,001-5,000

224

5,001-10,000

10001+

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 waste management consulting 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: 41 countries, largest first: the United States, Brazil, the United Kingdom, Italy, Germany, India, France, Canada, Spain, Australia and 31 more. Country and city lists for waste management consulting firms are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “waste management consulting 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 waste management consulting 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 waste management consulting 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, 127,867 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 14, 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.

Waste management consulting firms by location

68 lists · largest first

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

Countries

Cities

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 waste management consulting 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 waste management consulting firms are there worldwide?

RevenueBase identified 16,648 waste management consulting 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?

Veolia, headquartered in Aubervilliers, tops this list with the largest team on record.

Which country has the most waste management consulting firms?

The United States leads with 3,697 companies, followed by Brazil (1,954) and the United Kingdom (1,267). Every waste management consulting firms list by country and city is linked on this page.

Which city has the most waste management consulting firms?

Sao Paulo leads with 242 headquartered companies, followed by London (115) and Houston (111).

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 127,867 verified decision-maker contacts tracked across these 16,648 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 14, 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.