Company lists · Data refreshed September 2026

Top 25 Environmental restoration contractors based in the United States

Name: Environmental restoration contractors based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 2,223 companies tracked

RevenueBase identified 2,223 environmental restoration contractors headquartered in the United States as of September 2026 and tracks 52,275 professional contacts across them, including 19,506 with verified work emails. Houston is the largest hub.

This list covers environmental restoration contractors 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 16, 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 16, 2026 86% judged on-target in blind review

2,223Companies

52,275Contacts tracked

19,506Verified emails

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The 25 largest environmental restoration contractors based in the United States

Ranked by team size

Top 25 of 2,223 environmental restoration contractors based in the United States, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to environmental restoration contractors: 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	ECC	Partial evidence	Burlingame, CA, United StatesHQ checked Sep 16, 2026	n/a	2,040 contacts →
	Partial evidence “ECC is an employee-owned company that consistently ranks among the top construction and environmental companies in the world.” Source: RevenueBase Database · checked Sep 16, 2026
2	Montrose Environmental Group	Partial evidence	Little Rock, AR, United StatesHQ checked Sep 16, 2026	1,001-5,000	1,529 contacts →
	Partial 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 16, 2026
3	Weston Solutions, INC	Partial evidence	West Chester, PA, United StatesHQ checked Sep 16, 2026	1,001-5,000	1,441 contacts →
	Partial 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 16, 2026
4	Blusky Restoration Contractors	Strong evidence	Centennial, CO, United StatesHQ checked Sep 16, 2026	1,001-5,000	1,051 contacts →
	Strong evidence “BluSky Restoration Contractors, LLC is a full-service national restoration contractor with locations coast to coast.” Source: RevenueBase Database · checked Sep 16, 2026
5	ENVU	Partial evidence	Cary, NC, United StatesHQ checked Sep 16, 2026	1,001-5,000	807 contacts →
	Partial evidence “At Envu, we partner with our customers to design world-class, forward-thinking innovations that protect and enhance the health of environments around the world.” Source: RevenueBase Database · checked Sep 16, 2026
6	Environmental Science Associates	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 16, 2026	501-1,000	732 contacts →
	Partial evidence “ESA is a 100% employee-owned environmental consulting firm.” Source: RevenueBase Database · checked Sep 16, 2026
7	Resource Environmental Solutions LLC	Partial evidence	Bellaire, TX, United StatesHQ checked Sep 16, 2026	501-1,000	677 contacts →
	Partial evidence “As the nation’s largest nature-based solutions company, RES (Resource Environmental Solutions) is restoring a resilient earth for a modern world, project by project.” Source: RevenueBase Database · checked Sep 16, 2026
8	Entact, LLC	Partial evidence	Westmont, IL, United StatesHQ checked Sep 16, 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 16, 2026
9	Rincon Consultants	Partial evidence	Ventura, CA, United StatesHQ checked Sep 16, 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 16, 2026
10	Navarro Research And Engineering	Strong evidence	Oak Ridge, TN, United StatesHQ checked Sep 16, 2026	201-500	468 contacts →
	Strong evidence “Navarro Research & Engineering is an award-winning federal contractor dedicated to partnering with our clients to overcome their most challenging environmental, technical, and…” Source: RevenueBase Database · checked Sep 16, 2026
11	Groundwater & Environmental Services, INC	Partial evidence	Wall Township, NJ, United StatesHQ checked Sep 16, 2026	201-500	447 contacts →
	Partial evidence “We are Groundwater & Environmental Services, Inc, better known as GES.” Source: RevenueBase Database · checked Sep 16, 2026
12	ROUX	Partial evidence	Islandia, NY, United StatesHQ checked Sep 16, 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 16, 2026
13	Hydrogeologic, INC	Indirect evidence	Reston, VA, United StatesHQ checked Sep 16, 2026	501-1,000	430 contacts →
	Indirect 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 16, 2026
14	Hepaco, LLC	Partial evidence	Charlotte, NC, United StatesHQ checked Sep 16, 2026	501-1,000	428 contacts →
	Partial evidence “HEPACO is the premier environmental and emergency services company in the Eastern United States with coverage across 40+ regional offices.” Source: RevenueBase Database · checked Sep 16, 2026
15	SET Environmental, INC	Partial evidence	Wheeling, IL, United StatesHQ checked Sep 16, 2026	201-500	364 contacts →
	Partial evidence “Combining a tradition of integrity, innovation, and excellence, SET Environmental provides environmental management services to a nationwide client base.” Source: RevenueBase Database · checked Sep 16, 2026
16	Environmental Consulting & Technology, Inc. ECT	Partial evidence	Gainesville, FL, United StatesHQ checked Sep 16, 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 16, 2026
17	Lakeshore Global Corporation	Indirect evidence	Detroit, MI, United StatesHQ checked Sep 16, 2026	201-500	280 contacts →
	Indirect evidence “LGC Global delivers 100+ years of technical expertise in turnkey design-build and traditional construction, renovation and rehabilitation (including historical buildings), water…” Source: RevenueBase Database · checked Sep 16, 2026
18	Sevenson Environmental Services INC	Partial evidence	Niagara Falls, NY, United StatesHQ checked Sep 16, 2026	501-1,000	277 contacts →
	Partial evidence “Sevenson Environmental Services, Inc.” Source: RevenueBase Database · checked Sep 16, 2026
19	Environmental Restoration LLC	Strong evidence	Saint Louis, MO, United StatesHQ checked Sep 16, 2026	201-500	273 contacts →
	Strong 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 16, 2026
20	Merjent	Strong evidence	Minneapolis, MN, United StatesHQ checked Sep 16, 2026	201-500	264 contacts →
	Strong evidence “Merjent is an environmental, restoration, and engineering consulting firm with a long history serving the energy industry.” Source: RevenueBase Database · checked Sep 16, 2026
21	GSI Environmental INC	Partial evidence	Houston, TX, United StatesHQ checked Sep 16, 2026	201-500	259 contacts →
	Partial evidence “GSI Environmental, Inc.(GSI), is an environmental engineering and science consulting firm committed to measuring, analyzing, and solving complex environmental problems around the…” Source: RevenueBase Database · checked Sep 16, 2026
22	Forgen	Indirect evidence	Centennial, CO, United StatesHQ checked Sep 16, 2026	201-500	255 contacts →
	Indirect evidence “At Forgen, we leave the planet better than we found it.” Source: RevenueBase Database · checked Sep 16, 2026
23	Alliance Environmental Group, LLC	Strong evidence	Azusa, CA, United StatesHQ checked Sep 16, 2026	501-1,000	254 contacts →
	Strong evidence “Alliance is one of the most experienced and trusted environmental contractors in California.” Source: RevenueBase Database · checked Sep 16, 2026
24	Cascade Environmental, LLC	Partial evidence	Bothell, WA, United StatesHQ checked Sep 16, 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 16, 2026
25	Environmental Works, INC	Partial evidence	Springfield, MO, United StatesHQ checked Sep 16, 2026	201-500	238 contacts →
	Partial evidence “Environmental Works, Inc.(EWI) offers truly comprehensive environmental solutions for a variety of industries, businesses, and municipalities.” Source: RevenueBase Database · checked Sep 16, 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: environmental restoration contractors. 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 environmental restoration contractors.
Partial evidence: Its own public description names part of environmental restoration contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name environmental restoration contractors. 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 2,223 environmental restoration contractors based in the United States

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Environmental restoration contractors based in the United States at a glance

As of Sep 16, 2026

37.3%Verified-email coverage

23.5Average contacts per company

11-50Median size (employees)

1.3%Largest-city concentration · Houston

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

804

11-50

921

51-200

369

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 2,223 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 environmental restoration contractors, 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 “environmental restoration contractors”. 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 environmental restoration contractors), 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 environmental restoration contractors, 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, 19,506 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 16, 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.

Environmental restoration contractors by metro

Environmental restoration contractors in Houston30

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 environmental restoration contractors, 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 environmental restoration contractors are there based in the United States?

RevenueBase identified 2,223 environmental restoration contractors 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?

ECC, headquartered in Burlingame, tops this list with the largest team on record.

Which city has the most environmental restoration contractors?

Houston leads with 30 headquartered companies, followed by Indianapolis (21) and Denver (18).

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 19,506 verified decision-maker contacts tracked across these 2,223 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 16, 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.