Company lists · Data refreshed September 2026

Top 25 Landfill consulting firms based in the United States

Name: Landfill 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 28, 2026 1,921 companies tracked

RevenueBase identified 1,921 landfill consulting firms headquartered in the United States as of September 2026 and tracks 45,291 professional contacts across them, including 19,132 with verified work emails. Houston is the largest hub.

This list covers landfill consulting firms headquartered in the United States, 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 28, 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 28, 2026 86% judged on-target in blind review

1,921Companies

45,291Contacts tracked

19,132Verified emails

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The 25 largest landfill consulting firms based in the United States

Ranked by team size

Top 25 of 1,921 landfill consulting firms based in the United States, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to landfill 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	Civil & Environmental Consultants, INC	Partial evidence	Moon Township, PA, United StatesHQ checked Sep 28, 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 28, 2026
2	Swca Environmental Consultants	Partial evidence	Phoenix, AZ, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,629 contacts →
	Partial 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 28, 2026
3	Montrose Environmental Group	Indirect evidence	Little Rock, AR, United StatesHQ checked Sep 28, 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 28, 2026
4	Triumvirate Environmental	Indirect evidence	Somerville, MA, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,068 contacts →
	Indirect evidence “Triumvirate Environmental provides sustainable environmental solutions to leading companies in the Life Sciences, Healthcare, Education, and Advanced Manufacturing markets.” Source: RevenueBase Database · checked Sep 28, 2026
5	Alliance Technical Group	Indirect evidence	Decatur, AL, United StatesHQ checked Sep 28, 2026	1,001-5,000	956 contacts →
	Indirect evidence “Alliance is a new kind of environmental services company-powered by innovation, focused on service, and committed to client success.” Source: RevenueBase Database · checked Sep 28, 2026
6	ATC Group Services LLC	Indirect evidence	Lafayette, LA, United StatesHQ checked Sep 28, 2026	1,001-5,000	865 contacts →
	Indirect evidence “ATC Group Services LLC is now Atlas.” Source: RevenueBase Database · checked Sep 28, 2026
7	Environmental Science Associates	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	501-1,000	732 contacts →
	Partial evidence “ESA is a 100% employee-owned environmental consulting firm.” Source: RevenueBase Database · checked Sep 28, 2026
8	VLS Environmental Solutions, LLC	Indirect evidence	Houston, TX, United StatesHQ checked Sep 28, 2026	1,001-5,000	481 contacts →
	Indirect evidence “At VLS, we address your company’s most significant hurdles with waste management and compliance through sustainable solutions.” Source: RevenueBase Database · checked Sep 28, 2026
9	Rincon Consultants	Partial evidence	Ventura, CA, United StatesHQ checked Sep 28, 2026	501-1,000	479 contacts →
	Partial evidence “Rincon Consultants is a multi-disciplinary environmental sciences, planning, and engineering consulting firm that provides quality professional services to government and industry.” Source: RevenueBase Database · checked Sep 28, 2026
10	Groundwater & Environmental Services, INC	Indirect evidence	Wall Township, NJ, United StatesHQ checked Sep 28, 2026	201-500	447 contacts →
	Indirect evidence “We are Groundwater & Environmental Services, Inc, better known as GES.” Source: RevenueBase Database · checked Sep 28, 2026
11	ROUX	Partial evidence	Islandia, NY, United StatesHQ checked Sep 28, 2026	201-500	433 contacts →
	Partial 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 28, 2026
12	Rubicon	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 28, 2026	201-500	377 contacts →
	Indirect evidence “Rubicon is a waste sciences company that helps national organizations, small and mid-sized businesses, and everyday consumers simplify and optimize their environmental operations…” Source: RevenueBase Database · checked Sep 28, 2026
13	Barton & Loguidice	Partial evidence	Liverpool, NY, United StatesHQ checked Sep 28, 2026	201-500	355 contacts →
	Partial evidence “Barton & Loguidice is a multidisciplinary consulting firm providing technical services to public and private clients.” Source: RevenueBase Database · checked Sep 28, 2026
14	MPS Group	Indirect evidence	Farmington Hills, MI, United StatesHQ checked Sep 28, 2026	1,001-5,000	331 contacts →
	Indirect evidence “When it comes to managed professional services, there’s one company that puts the latest technologies, quality processes, and innovative management techniques to work for you –…” Source: RevenueBase Database · checked Sep 28, 2026
15	Envita Solutions	Indirect evidence	Indianapolis, IN, United StatesHQ checked Sep 28, 2026	201-500	327 contacts →
	Indirect evidence “Envita Solutions is a premier supplier of customized waste and recycling programs, industrial services, and transformative sustainability solutions.” Source: RevenueBase Database · checked Sep 28, 2026
16	Environmental Consulting & Technology, Inc. ECT	Partial evidence	Gainesville, FL, United StatesHQ checked Sep 28, 2026	201-500	305 contacts →
	Partial evidence “Environmental Consulting & Technology, Inc.(ECT) is a multi-disciplinary environmental and sustainability consulting firm delivering strategy, permitting, design, and management…” Source: RevenueBase Database · checked Sep 28, 2026
17	Ecology And Environment, INC	Indirect evidence	Lancaster, NY, United StatesHQ checked Sep 28, 2026	5,001-10,000	278 contacts →
	Indirect evidence “E&E is now WSP USA.” Source: RevenueBase Database · checked Sep 28, 2026
18	Ironclad Environmental Solutions	Indirect evidence	Houston, TX, United StatesHQ checked Sep 28, 2026	201-500	263 contacts →
	Indirect evidence “Ironclad Environmental Solutions is the leading provider of custom waste management solutions, supported by the largest national fleet of innovative, top-quality specialty assets.” Source: RevenueBase Database · checked Sep 28, 2026
19	ARM Group	Indirect evidence	Hershey, PA, United StatesHQ checked Sep 28, 2026	201-500	242 contacts →
	Indirect evidence “ARM Group is a science and engineering firm that provides civil, environmental, and technical field services in the Mid-Atlantic region for the following markets: Solid Waste…” Source: RevenueBase Database · checked Sep 28, 2026
20	Environmental Works, INC	Indirect evidence	Springfield, MO, United StatesHQ checked Sep 28, 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 28, 2026
21	Metiri Group	Indirect evidence	Clovis, CA, United StatesHQ checked Sep 28, 2026	n/a	233 contacts →
	Indirect evidence “Appl Inc is an environmental services company based out of 908 N Temperance Ave, Clovis, CA, United States.” Source: RevenueBase Database · checked Sep 28, 2026
22	Northstar Recycling	Partial evidence	East Longmeadow, MA, United StatesHQ checked Sep 28, 2026	201-500	230 contacts →
	Partial evidence “Northstar Recycling is the full-service, vendor-agnostic waste and recycling partner trusted by leading manufacturers to reduce landfill use and unlock measurable business value.” Source: RevenueBase Database · checked Sep 28, 2026
23	Patriot Environmental Services	Indirect evidence	Signal Hill, CA, United StatesHQ checked Sep 28, 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 28, 2026
24	Normandeau Associates, INC	Indirect evidence	Bedford, NH, United StatesHQ checked Sep 28, 2026	201-500	189 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
25	Kemron Environmental Services	Indirect evidence	Atlanta, United StatesHQ checked Sep 28, 2026	201-500	188 contacts →
	Indirect evidence “With more than 50 years of excellence, KEMRON Environmental Services, Inc.” Source: RevenueBase Database · checked Sep 28, 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: landfill 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 landfill consulting firms.
Partial evidence: Its own public description names part of landfill consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name landfill 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 1,921 landfill consulting firms based in the United States

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Landfill consulting firms based in the United States at a glance

As of Sep 28, 2026

42.2%Verified-email coverage

23.6Average contacts per company

11-50Median size (employees)

2.8%Largest-city concentration · Houston

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

948

11-50

701

51-200

199

201-500

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 1,921 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 landfill 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.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “landfill 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 landfill 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 landfill consulting firms, and records with no verified work email. Companies headquartered outside United States 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, 19,132 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 28, 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.

Landfill consulting firms by metro

Landfill consulting firms in Houston54

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 landfill 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 landfill consulting firms are there based in the United States?

RevenueBase identified 1,921 landfill consulting firms headquartered in the United States 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?

Civil & Environmental Consultants, INC, headquartered in Moon Township, tops this list with the largest team on record.

Which city has the most landfill consulting firms?

Houston leads with 54 headquartered companies, followed by Tampa (22) and New York (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 19,132 verified decision-maker contacts tracked across these 1,921 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 28, 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.