Company lists · Data refreshed September 2026

Top 25 Waste management consulting firms based in the United States

Name: Waste management consulting firms based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 14, 2026 3,697 companies tracked

RevenueBase identified 3,697 company matches for waste management consulting firms associated with the United States as of September 2026 and tracks 154,591 professional contacts across them, including 59,073 with verified work emails. Houston is the largest hub.

This list covers company matches for waste management consulting firms associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 14, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Sep 14, 2026 How this list was built

3,697Companies

154,591Contacts tracked

59,073Verified emails

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The 25 largest waste management consulting firms based in the United States

Ranked by team size

Top 25 of 3,697 company matches for waste management consulting firms based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 14, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	WM	Exact match	Houston, TX, United StatesHQ recorded Sep 14, 2026	10001+	24,303 contacts →
	Exact match “WM is North America's leading provider of integrated environmental solutions.” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
2	Republic Services	Exact match	Phoenix, AZ, United StatesHQ recorded Sep 14, 2026	10001+	17,016 contacts →
	Exact match “Republic Services provides the most complete set of recycling, waste and environmental solutions from a single provider.” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
3	Tetra Tech	Exact match	Pasadena, CA, United StatesHQ recorded Sep 14, 2026	10001+	12,999 contacts →
	Exact match “Tetra Tech is the leader in water, environment and sustainable infrastructure, providing high-end technical and engineering services for projects worldwide.” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
4	Clean Harbors	Exact match	Norwell, MA, United StatesHQ recorded Sep 14, 2026	10001+	8,924 contacts →
	Exact match “Clean Harbors is North America’s leading provider of environmental and industrial services.” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
5	Brown And Caldwell	Exact match	Walnut Creek, CA, United StatesHQ recorded Sep 14, 2026	1,001-5,000	2,473 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
6	Civil & Environmental Consultants, INC	Exact match	Moon Township, PA, United StatesHQ recorded Sep 14, 2026	1,001-5,000	2,145 contacts →
	Exact match “Civil & Environmental Consultants, Inc.(CEC) provides comprehensive market-oriented consulting services that advance the strategic business objectives of its clients.” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
7	Hazen And Sawyer	Exact match	New York, NY, United StatesHQ recorded Sep 14, 2026	1,001-5,000	2,100 contacts →
	Exact match “As Hazen marks 75 years, we celebrate a legacy of absolute commitment to our clients while delivering the best technical work available anywhere.” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
8	Swca Environmental Consultants	Exact match	Phoenix, AZ, United StatesHQ recorded Sep 14, 2026	1,001-5,000	1,629 contacts →
	Exact match “Founded on a commitment to sound science and creative solutions, SWCA is a leader in environmental and management consulting services.” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
9	Waste PRO USA	Exact match	Longwood, United StatesHQ recorded Sep 14, 2026	1,001-5,000	1,560 contacts →
	Exact match “Waste Pro USA, Inc.” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
10	Montrose Environmental Group	Exact match	Little Rock, AR, United StatesHQ recorded Sep 14, 2026	1,001-5,000	1,529 contacts →
	Exact match “Onterris (formerly Montrose Environmental Group) was one of the first to see environmental responsibility as not just an imperative but as a strategic asset.” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
11	Rumpke Waste & Recycling	Exact match	Cincinnati, OH, United StatesHQ recorded Sep 14, 2026	1,001-5,000	1,360 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
12	US Ecology Inc., A Republic Services Company	Exact match	Boise, ID, United StatesHQ recorded Sep 14, 2026	1,001-5,000	1,360 contacts →
	Exact match “US Ecology is a Republic Services company.” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
13	Clean Earth	Exact match	King Of Prussia, PA, United StatesHQ recorded Sep 14, 2026	1,001-5,000	1,275 contacts →
	Exact match “Veolia has completed the acquisition of Clean Earth, bringing together two organizations with a shared commitment to environmental stewardship, safety and operational excellence.” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
14	Casella Waste Systems, INC	Exact match	Rutland, VT, United StatesHQ recorded Sep 14, 2026	1,001-5,000	1,231 contacts →
	Exact match “Casella, headquartered in Rutland, Vermont, is one of the largest recyclers and most experienced fully integrated resource management companies in the Eastern United States.” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
15	Apex Companies	Exact match	Rockville, MD, United StatesHQ recorded Sep 14, 2026	1,001-5,000	1,137 contacts →
	Exact match “Who is Apex?” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
16	Triumvirate Environmental	Exact match	Somerville, MA, United StatesHQ recorded Sep 14, 2026	1,001-5,000	1,068 contacts →
	Exact match “Triumvirate Environmental provides sustainable environmental solutions to leading companies in the Life Sciences, Healthcare, Education, and Advanced Manufacturing markets.” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
17	Advanced Disposal Services, INC	Exact match	Ponte Vedra, FL, United StatesHQ recorded Sep 14, 2026	5,001-10,000	968 contacts →
	Exact match “Advanced Disposal, now part of Waste Management Waste Management, based in Houston, Texas, is the leading provider of comprehensive waste management environmental services in…” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
18	Trinity Consultants	Exact match	Dallas, TX, United StatesHQ recorded Sep 14, 2026	1,001-5,000	961 contacts →
	Exact match “Trinity Consultants is a global team of experts helping organizations solve complex challenges in environmental compliance, ecological protection, infrastructure performance, and…” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
19	Recology	Exact match	San Francisco, CA, United StatesHQ recorded Sep 14, 2026	1,001-5,000	957 contacts →
	Exact match “At Recology, you’ll join a team of passionate, creative, and dedicated individuals who are leaders in sustainability.” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
20	Alliance Technical Group	Exact match	Decatur, AL, United StatesHQ recorded Sep 14, 2026	1,001-5,000	956 contacts →
	Exact match “Alliance is a new kind of environmental services company-powered by innovation, focused on service, and committed to client success.” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
21	Crystal Clean	Exact match	Hoffman Estates, IL, United StatesHQ recorded Sep 14, 2026	1,001-5,000	899 contacts →
	Exact match “Crystal Clean is a national leader in the environmental services market, providing the smart alternative.” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
22	ATC Group Services LLC	Exact match	Lafayette, LA, United StatesHQ recorded Sep 14, 2026	1,001-5,000	865 contacts →
	Exact match “ATC Group Services LLC is now Atlas.” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
23	FCC Environmental Services	Exact match	Houston, TX, United StatesHQ recorded Sep 14, 2026	1,001-5,000	828 contacts →
	Exact match “A Leader in Environmental Services FCC Environmental Services is proud to serve over 14 million Americans across 7 states, supported by a dedicated team of Our 1200+ vehicle fleet…” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
24	Psomas	Exact match	Los Angeles, CA, United StatesHQ recorded Sep 14, 2026	501-1,000	748 contacts →
	Exact match “Our award-winning projects are produced through innovation, creativity, and technical expertise.” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase
25	WIN Waste Innovations	Exact match	Portsmouth, NH, United StatesHQ recorded Sep 14, 2026	1,001-5,000	635 contacts →
	Exact match “WIN Waste Innovations is a waste management company committed to delivering essential waste management solutions to customers and communities supported by our team of 2,100…” Recorded in the RevenueBase company graph · Sep 14, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “waste management consulting firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 3,697 waste management consulting firms based in the United States

See the full list, filter by size, metro and specialty, and access 59,073 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Waste management consulting firms based in the United States at a glance

As of Sep 14, 2026

38.2%Verified-email coverage

41.8Average contacts per company

11-50Median size (employees)

3.0%Largest-city concentration · Houston

Sep 14, 2026Page data refreshed

Companies by employee count

1-10

1,665

11-50

1,309

51-200

469

201-500

136

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 3,697 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with the United States whose business descriptions match “waste management consulting firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 59,073 professional contacts with verified work emails across the full matched dataset. 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.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Waste management consulting firms by metro

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “waste management consulting firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many waste management consulting firms are there based in the United States?

RevenueBase identified 3,697 company matches for waste management consulting firms associated with the United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

WM tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most waste management consulting firms?

Houston leads with 111 company records, followed by New York (52) and Chicago (41).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 59,073 professional contacts with verified work emails tracked across these 3,697 companies; direct dials are available where recorded.

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 SmartSearch, 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.