Company lists · Data refreshed October 2026

Top 25 Environmental contractors based in Houston, United States

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

Compiled by the RevenueBase Data Team Data refreshed Oct 12, 2026 207 companies tracked

RevenueBase identified 207 company matches for environmental contractors associated with Houston, United States as of October 2026 and tracks 10,259 professional contacts across them, including 3,252 with verified work emails. Across the United States, Houston is the largest hub for this category.

This list covers company matches for environmental contractors associated with Houston, 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 October 12, 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 Oct 12, 2026 How this list was built

207Companies

10,259Contacts tracked

3,252Verified emails

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The 25 largest environmental contractors based in Houston, United States

Ranked by team size

Top 25 of 207 company matches for environmental contractors based in Houston, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 12, 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	Brock Group	Exact match	Houston, TX, United StatesHQ recorded Oct 12, 2026	10001+	3,292 contacts →
	Exact match “The Brock Group is a leading provider of industrial specialty services to clients around the world, with headquarters in Houston, TX, and operating units in Canada, the United…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
2	Quanta Infrastructure Solutions Group	Exact match	Houston, TX, United StatesHQ recorded Oct 12, 2026	501-1,000	690 contacts →
	Exact match “Quanta Infrastructure Solutions Group (QISG) is a recognized leader in EPC, design-build, and CMAR services for electrical infrastructure, wastewater and specialty projects…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
3	The Mundy Companies	Exact match	Houston, TX, United StatesHQ recorded Oct 12, 2026	1,001-5,000	621 contacts →
	Exact match “The Mundy Companies is a privately owned company headquartered in Houston, Texas with offices Pasadena, TX, Nederland, TX, and Wilmington, NC.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
4	VLS Environmental Solutions, LLC	Exact match	Houston, TX, United StatesHQ recorded Oct 12, 2026	1,001-5,000	496 contacts →
	Exact match “At VLS, we address your company’s most significant hurdles with waste management and compliance through sustainable solutions.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
5	GSI Environmental INC	Exact match	Houston, TX, United StatesHQ recorded Oct 12, 2026	201-500	272 contacts →
	Exact match “GSI Environmental, Inc.(GSI), is an environmental engineering and science consulting firm committed to measuring, analyzing, and solving complex environmental problems around the…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
6	Brace Integrated Services	Exact match	Houston, TX, United StatesHQ recorded Oct 12, 2026	501-1,000	264 contacts →
	Exact match “BRACE Integrated Services, a BRACE Industrial Group company, is a nationwide specialty contractor and turn-key supplier of scaffolding, insulation, fireproofing, heat tracing…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
7	Kilgore Industries, LP	Exact match	Houston, TX, United StatesHQ recorded Oct 12, 2026	501-1,000	251 contacts →
	Exact match “Kilgore Industries, LP offers turnkey mechanical contracting services including electrical and plumbing construction solutions.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
8	Remedial Construction Services, L.P. Recon	Exact match	Houston, TX, United StatesHQ recorded Oct 12, 2026	201-500	221 contacts →
	Exact match “Since 1989, RECON has successfully completed over environmental remediation, geotechnical, and mine reclamation projects.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
9	Stage 3 Separation	Exact match	Houston, TX, United StatesHQ recorded Oct 12, 2026	201-500	206 contacts →
	Exact match “Stage 3 Separation is North America’s leading service provider for fluid conservation, solids control and waste mitigation.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
10	Trio Electric	Exact match	Houston, TX, United StatesHQ recorded Oct 12, 2026	201-500	200 contacts →
	Exact match “Trio Electric was founded in 2003.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
11	Ironclad Environmental Solutions	Exact match	Houston, TX, United StatesHQ recorded Oct 12, 2026	201-500	175 contacts →
	Exact match “Ironclad Environmental Solutions is the leading provider of custom waste management solutions, supported by the largest national fleet of innovative, top-quality specialty assets.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
12	Milestone Environmental	Exact match	Houston, TX, United StatesHQ recorded Oct 12, 2026	201-500	126 contacts →
	Exact match “Milestone Environmental is a leading environmental infrastructure and services company delivering reliable, safe, compliant and best-in-class waste management solutions.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
13	Edge Engineering And Science, LLC	Exact match	Houston, TX, United StatesHQ recorded Oct 12, 2026	51-200	123 contacts →
	Exact match “Edge Engineering & Science, LLC (EDGE) is a privately owned professional services firm headquartered in Houston, Texas.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
14	Perennial Environmental Services	Exact match	Houston, TX, United StatesHQ recorded Oct 12, 2026	51-200	111 contacts →
	Exact match “Perennial Environmental Services, LLC, has been providing technical environmental solutions and management with fresh perspectives and unparalleled efficiency since 2003.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
15	Tristar Global Energy Solutions	Exact match	Houston, TX, United StatesHQ recorded Oct 12, 2026	201-500	111 contacts →
	Exact match “Founded in 2002, TriStar Global Energy Solutions (GES) is the parent company of leading specialty contractors in the energy industry; TriStar PetroServ, Global Vapor Control, and…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
16	Garner Environmental Services	Exact match	Houston, TX, United StatesHQ recorded Oct 12, 2026	11-50	106 contacts →
	Exact match “Established in 1981, Garner Environmental Services, Inc.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
17	Zymeflow	Exact match	Houston, TX, United StatesHQ recorded Oct 12, 2026	51-200	91 contacts →
	Exact match “ZymeFlow® is the global leader in chemical decontamination of process equipment in refinery, petrochemical, gas, and specialty markets.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
18	Aarc Environmental	Exact match	Houston, TX, United StatesHQ recorded Oct 12, 2026	51-200	75 contacts →
	Exact match “As a leader in the environmental compliance services industry, AARC does more than just meeting the needs of clients today.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
19	Raven Mechanical, LP	Exact match	Houston, TX, United StatesHQ recorded Oct 12, 2026	51-200	75 contacts →
	Exact match “Raven Mechanical, founded 1979, is a full service mechanical contractor specializing in Plumbing and HVAC service and construction.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
20	Streamtech Industrial	Exact match	Houston, TX, United StatesHQ recorded Oct 12, 2026	501-1,000	69 contacts →
	Exact match “StreamTech is a national provider of Industrial, Environmental, and Comprehensive Tank services.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
21	Sage ATC Environmental Consulting	Exact match	Houston, TX, United StatesHQ recorded Oct 12, 2026	201-500	65 contacts →
	Exact match “Sage ATC Environmental Consulting is now Atlas.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
22	Envirocon Systems INC	Exact match	Houston, TX, United StatesHQ recorded Oct 12, 2026	51-200	60 contacts →
	Exact match “Providing technical, safety-intensive liner and piping solutions.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
23	Standard Constructors, INC	Exact match	Houston, TX, United StatesHQ recorded Oct 12, 2026	201-500	41 contacts →
	Exact match “Standard Constructors Inc has evolved over four generations to become a nationally recognized award-winning industrial contractor providing turn-key solutions to all phases of…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
24	Phase Engineering, LLC	Exact match	Houston, TX, United StatesHQ recorded Oct 12, 2026	11-50	38 contacts →
	Exact match “Phase Engineering, LLC, was founded in 1993 and is a leading engineering and environmental consulting firm, serving clients nationwide to deliver trusted environmental solutions.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
25	DL Meacham LP	Exact match	Houston, TX, United StatesHQ recorded Oct 12, 2026	11-50	38 contacts →
	Exact match “DL Meacham LP is a construction company based out of 2102 Hoskins, Houston, TX, United States.” Recorded in the RevenueBase company graph · Oct 12, 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 “environmental contractors”. 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 207 environmental contractors based in Houston, United States

See the full list, filter by size, metro and specialty, and access 3,252 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Environmental contractors based in Houston, United States at a glance

As of Oct 12, 2026

31.7%Verified-email coverage

49.6Average contacts per company

11-50Median size (employees)

Oct 12, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

10001+

Email recency for this list is measured across the whole United States list rather than for Houston, so it is reported there. Company counts and contact totals on this page are exact for Houston, over 207 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 Houston, United States whose business descriptions match “environmental contractors” 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 3,252 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 12, 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.

Environmental contractors by metro in the United States

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 “environmental contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many environmental contractors are there based in Houston, United States?

RevenueBase identified 207 company matches for environmental contractors associated with Houston, United States 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?

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

Which city in the United States has the most environmental contractors?

Houston leads the United States with 207 company records, followed by New York (130) and Phoenix (72).

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 3,252 professional contacts with verified work emails tracked across these 207 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 12, 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.