Company lists · Data refreshed October 2026

Top 25 Landfill engineering consultants worldwide

Name: Landfill engineering consultants worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 17, 2026 10,241 companies tracked

RevenueBase identified 10,241 company matches for landfill engineering consultants worldwide as of October 2026 and tracks 217,099 professional contacts across them, including 82,491 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers company matches for landfill engineering consultants worldwide, 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 October 17, 2026. Country and city lists for landfill engineering consultants follow the table.

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 Oct 17, 2026 How this list was built

10,241Companies

217,099Contacts tracked

82,491Verified emails

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The 25 largest landfill engineering consultants worldwide

Ranked by team size

Top 25 of 10,241 company matches for landfill engineering consultants worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 17, 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	Tetra Tech	Exact match	Pasadena, CA, United StatesHQ recorded Oct 17, 2026	10001+	13,725 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 · Oct 17, 2026 · View company records in RevenueBase
2	Terracon	Exact match	Olathe, KS, United StatesHQ recorded Oct 17, 2026	5,001-10,000	6,380 contacts →
	Exact match “Terracon is a 100 percent employee-owned consulting engineering firm providing quality services to clients.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
3	Golder	Exact match	Vancouver, BC, CanadaHQ recorded Oct 17, 2026	5,001-10,000	3,241 contacts →
	Exact match “Golder was acquired by WSP.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
4	Geosyntec Consultants	Exact match	Boca Raton, FL, United StatesHQ recorded Oct 17, 2026	1,001-5,000	2,521 contacts →
	Exact match “Geosyntec is a consulting and engineering firm that works with private and public sector clients to address new ventures and complex problems involving our environment, natural…” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
5	Brown And Caldwell	Exact match	Walnut Creek, CA, United StatesHQ recorded Oct 17, 2026	1,001-5,000	2,510 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 · Oct 17, 2026 · View company records in RevenueBase
6	Langan Engineering & Environmental Services	Exact match	Parsippany, NJ, United StatesHQ recorded Oct 17, 2026	1,001-5,000	2,402 contacts →
	Exact match “Langan's client-focused, highly entrepreneurial culture cultivates an environment of opportunities in which career growth and teamwork flourish.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
7	ECS Group Of Companies	Exact match	Chantilly, VA, United StatesHQ recorded Oct 17, 2026	1,001-5,000	2,259 contacts →
	Exact match “ECS Group of Companies is a Chantilly, VA-based consulting engineering firm.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
8	Providence	Exact match	Baton Rouge, LA, United StatesHQ recorded Oct 17, 2026	n/a	2,256 contacts →
	Exact match “Providence is an employee-owned engineering and environmental consulting firm.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
9	Civil & Environmental Consultants, INC	Exact match	Moon Township, PA, United StatesHQ recorded Oct 17, 2026	1,001-5,000	2,204 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 · Oct 17, 2026 · View company records in RevenueBase
10	LJA	Exact match	Houston, TX, United StatesHQ recorded Oct 17, 2026	1,001-5,000	2,148 contacts →
	Exact match “Employee-Owned.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
11	Carollo Engineers	Exact match	Walnut Creek, CA, United StatesHQ recorded Oct 17, 2026	1,001-5,000	1,811 contacts →
	Exact match “For more than 90 years, Carollo Engineers has been dedicated exclusively to water and wastewater solutions.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
12	Bowman Consulting	Exact match	Reston, VA, United StatesHQ recorded Oct 17, 2026	1,001-5,000	1,778 contacts →
	Exact match “Headquartered in Reston, Virginia, Bowman is a national engineering services firm delivering infrastructure solutions to customers who own, develop and maintain the built…” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
13	CHA Consulting, INC	Exact match	Albany, NY, United StatesHQ recorded Oct 17, 2026	1,001-5,000	1,733 contacts →
	Exact match “CHA Consulting, Inc.(CHA) is an innovative, full-service engineering, design, consulting, and program/construction management firm providing a wide range of technology-enhanced…” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
14	GEI Consultants, INC	Exact match	Woburn, MA, United StatesHQ recorded Oct 17, 2026	1,001-5,000	1,639 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
15	Atwell, LLC	Exact match	Southfield, MI, United StatesHQ recorded Oct 17, 2026	1,001-5,000	1,499 contacts →
	Exact match “Atwell is a full-service consulting, engineering and construction services firm that delivers a broad range of creative solutions to clients in the real estate and land…” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
16	Partner Engineering & Science, INC	Exact match	Torrance, CA, United StatesHQ recorded Oct 17, 2026	1,001-5,000	1,418 contacts →
	Exact match “Partner Assessment Corp.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
17	Apex Companies	Exact match	Rockville, MD, United StatesHQ recorded Oct 17, 2026	1,001-5,000	1,266 contacts →
	Exact match “Who is Apex?” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
18	Volkert, INC	Exact match	Mobile, AL, United StatesHQ recorded Oct 17, 2026	1,001-5,000	1,201 contacts →
	Exact match “Volkert’s history began in 1925 when it was founded in New Orleans as Doullut & Erwin to provide waterfront and heavy construction services, as well as airport design services…” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
19	DGE Danmark	Exact match	Højbjerg, DenmarkHQ recorded Oct 17, 2026	n/a	1,171 contacts →
	Exact match “Miljø er vores kernekompetence og vores ansvar.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
20	Bge, INC	Exact match	Houston, TX, United StatesHQ recorded Oct 17, 2026	1,001-5,000	1,134 contacts →
	Exact match “Ranked No.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
21	Barr Engineering CO	Exact match	Minneapolis, MN, United StatesHQ recorded Oct 17, 2026	1,001-5,000	1,108 contacts →
	Exact match “Barr provides engineering and environmental consulting services to clients across the Midwest, throughout the Americas, and around the world.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
22	Trinity Consultants	Exact match	Dallas, TX, United StatesHQ recorded Oct 17, 2026	1,001-5,000	1,077 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 · Oct 17, 2026 · View company records in RevenueBase
23	WSP Chile Y Argentina	Exact match	Vitacura, ChileHQ recorded Oct 17, 2026	10001+	1,057 contacts →
	Exact match “WSP en una empresa líder en servicios profesionales de consultoría en recursos hídricos, ingeniería, medio ambiente y sustentabilidad.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
24	GAI Consultants, INC	Exact match	Homestead, PA, United StatesHQ recorded Oct 17, 2026	501-1,000	1,009 contacts →
	Exact match “Transforming ideas into reality® since 1958, GAI Consultants is an engineering, planning, and environmental consulting firm that provides customized solutions and local expertise…” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
25	Cardno	Exact match	Fortitude Valley, AustraliaHQ recorded Oct 17, 2026	1,001-5,000	1,005 contacts →
	Exact match “Cardno is now officially Stantec.” Recorded in the RevenueBase company graph · Oct 17, 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 “landfill engineering consultants”. 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 10,241 landfill engineering consultants worldwide

See the full list, filter by size, metro and specialty, and access 82,491 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Landfill engineering consultants worldwide at a glance

As of Oct 17, 2026

38.0%Verified-email coverage

21.2Average contacts per company

1-10Median size (employees)

1.4%Largest-city concentration · Sao Paulo

Oct 17, 2026Page data refreshed

Companies by employee count

1-10

5,127

11-50

3,547

51-200

1,090

201-500

274

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

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.
Coverage: Every country. Country and city lists for landfill engineering consultants are linked below.
What qualifies: Company records worldwide whose business descriptions match “landfill engineering consultants” 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. 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 82,491 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 October 17, 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.

Landfill engineering consultants by location

46 lists · largest first

Every Landfill engineering consultants 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 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 “landfill engineering consultants”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many landfill engineering consultants are there worldwide?

RevenueBase identified 10,241 company matches for landfill engineering consultants worldwide as of October 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?

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

Which country has the most landfill engineering consultants?

The United States leads with 2,734 companies, followed by Brazil (1,151) and Germany (444). Every landfill engineering consultants list by country and city is linked on this page.

Which city has the most landfill engineering consultants?

Sao Paulo leads with 140 company records, followed by Belo Horizonte (80) and Houston (71).

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 82,491 professional contacts with verified work emails tracked across these 10,241 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 October 17, 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.