Company lists · Data refreshed September 2026

Top 25 Industrial environmental compliance contractors based in Houston, United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 86 companies tracked

RevenueBase identified 86 industrial environmental compliance contractors headquartered in Houston, United States as of September 2026 and tracks 3,020 professional contacts across them, including 871 with verified work emails. Houston is the largest hub.

This list covers industrial environmental compliance contractors headquartered in Houston, 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 17, 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 17, 2026 86% judged on-target in blind review

86Companies

3,020Contacts tracked

871Verified emails

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The 25 largest industrial environmental compliance contractors based in Houston, United States

Ranked by team size

Top 25 of 86 industrial environmental compliance contractors based in Houston, United States, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to industrial environmental compliance 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	VLS Environmental Solutions, LLC	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	1,001-5,000	481 contacts →
	Partial evidence “At VLS, we address your company’s most significant hurdles with waste management and compliance through sustainable solutions.” Source: RevenueBase Database · checked Sep 17, 2026
2	GSI Environmental INC	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 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 17, 2026
3	Milestone Environmental	Strong evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	201-500	128 contacts →
	Strong evidence “Milestone Environmental is a leading environmental infrastructure and services company delivering reliable, safe, compliant and best-in-class waste management solutions.” Source: RevenueBase Database · checked Sep 17, 2026
4	Edge Engineering And Science, LLC	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	51-200	116 contacts →
	Indirect evidence “Edge Engineering & Science, LLC (EDGE) is a privately owned professional services firm headquartered in Houston, Texas.” Source: RevenueBase Database · checked Sep 17, 2026
5	Perennial Environmental Services	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	51-200	102 contacts →
	Partial evidence “Perennial Environmental Services, LLC, has been providing technical environmental solutions and management with fresh perspectives and unparalleled efficiency since 2003.” Source: RevenueBase Database · checked Sep 17, 2026
6	Streamtech Industrial	Strong evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	501-1,000	70 contacts →
	Strong evidence “StreamTech is a national provider of Industrial, Environmental, and Comprehensive Tank services.” Source: RevenueBase Database · checked Sep 17, 2026
7	Aarc Environmental	Strong evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	51-200	63 contacts →
	Strong evidence “As a leader in the environmental compliance services industry, AARC does more than just meeting the needs of clients today.” Source: RevenueBase Database · checked Sep 17, 2026
8	RCP INC	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	51-200	63 contacts →
	Partial evidence “RCP is the regulatory compliance and risk management expert for pipelines, facilities, and terminal operations.” Source: RevenueBase Database · checked Sep 17, 2026
9	Sage ATC Environmental Consulting	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	201-500	63 contacts →
	Partial evidence “Sage ATC Environmental Consulting is now Atlas.” Source: RevenueBase Database · checked Sep 17, 2026
10	Spirit Environmental Montrose Environmental Group	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	51-200	54 contacts →
	Indirect evidence “In July of 2024, Spirit was acquired by Onterris.” Source: RevenueBase Database · checked Sep 17, 2026
11	Conifer Systems	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	51-200	50 contacts →
	Partial evidence “Conifer Systems designs, manufactures and installs state-of-the-art emissions control systems and provides aftermarket services to enable industries to meet and exceed their…” Source: RevenueBase Database · checked Sep 17, 2026
12	RSB Environmental, An Alliance Technical Group Company	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	11-50	38 contacts →
	Partial evidence “RSB Environmental, an Alliance Technical Group company, is a full-service environmental engineering consulting firm, specializing in environmental health and safety services and…” Source: RevenueBase Database · checked Sep 17, 2026
13	Phase Engineering, LLC	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	11-50	34 contacts →
	Partial evidence “Phase Engineering, LLC, was founded in 1993 and is a leading engineering and environmental consulting firm, serving clients nationwide to deliver trusted environmental solutions.” Source: RevenueBase Database · checked Sep 17, 2026
14	Slick Response Services	Strong evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	11-50	32 contacts →
	Strong evidence “Full service environmental emergency response contractor with associated business lines in industrial maintenance and cleaning services.” Source: RevenueBase Database · checked Sep 17, 2026
15	UES Professional Solutions 64, LLC	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	11-50	31 contacts →
	Partial evidence “Environmental Consulting and Engineering InControl Technologies was established in 1997 to provide high-end quality environmental consulting services to owners of commercial and…” Source: RevenueBase Database · checked Sep 17, 2026
16	Ikon Environmental Solutions, LP	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	11-50	24 contacts →
	Partial evidence “IKON Environmental Solutions, LP (IKON) provides clients with unique solutions to environmental needs.” Source: RevenueBase Database · checked Sep 17, 2026
17	Credo Services LLC	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	11-50	23 contacts →
	Partial evidence “DGPS / Survey • Tool Tracking • Tool Decontamination/NORM License/Waste Disposal • Dig Locates • Abandoned Pipeline Recovery • Environmental Services • Pipe Sales • Project…” Source: RevenueBase Database · checked Sep 17, 2026
18	TGE Resources, INC	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	11-50	21 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
19	Environmental Operational Solutions Eosolutions	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	11-50	19 contacts →
	Partial evidence “At EOSolutions, we know you want your operations to stay in compliance.” Source: RevenueBase Database · checked Sep 17, 2026
20	ERC Environmental & Construction Services	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	11-50	18 contacts →
	Partial evidence “ERC is a Professional Services Firm in Environmental Consulting and Construction.” Source: RevenueBase Database · checked Sep 17, 2026
21	GSD Companies	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	51-200	15 contacts →
	Partial evidence “Headquartered in Houston, Texas, GSD has served the industrial sector through out the United States and around the world for over a quarter of a century.” Source: RevenueBase Database · checked Sep 17, 2026
22	Honesty Environmental Services, INC	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	1-10	14 contacts →
	Partial evidence “Honesty Environmental Services has decades of experience providing Asbestos/Lead Based-Pain/Mold and Indoor Air Quality services to a variety of clients throughout the country…” Source: RevenueBase Database · checked Sep 17, 2026
23	SKA Consulting, L.P	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	11-50	13 contacts →
	Partial evidence “SKA Consulting is a professional environmental engineering and consulting firm providing timely, innovative solutions to today’s environmental challenges.” Source: RevenueBase Database · checked Sep 17, 2026
24	Bocci Engineering	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	1-10	13 contacts →
	Partial evidence “Bocci is an energy and environmental engineering consultancy based in Houston, Texas providing high quality, innovative and cost-effective solutions that significantly reduce or…” Source: RevenueBase Database · checked Sep 17, 2026
25	PEI Consulting Group, INC	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	11-50	11 contacts →
	Partial evidence “PEI Consulting Group, Inc.(PEI) is an employee owned full-service environmental consulting and engineering firm providing timely, innovative solutions to today’s environmental…” Source: RevenueBase Database · checked Sep 17, 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: industrial environmental compliance 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 industrial environmental compliance contractors.
Partial evidence: Its own public description names part of industrial environmental compliance contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name industrial environmental compliance 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 86 industrial environmental compliance contractors based in Houston, United States

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Industrial environmental compliance contractors based in Houston, United States at a glance

As of Sep 17, 2026

28.8%Verified-email coverage

35.1Average contacts per company

11-50Median size (employees)

100.0%Largest-city concentration · Houston

Sep 17, 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 86 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 industrial environmental compliance 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 Houston, United States whose own description of what they do matches “industrial environmental compliance 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 industrial environmental compliance 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 industrial environmental compliance contractors, and records with no verified work email. Companies headquartered outside Houston 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, 871 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 17, 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.

Industrial environmental compliance contractors by metro in the United States

Industrial environmental compliance contractors in Houston86
Industrial environmental compliance contractors in New York38
Industrial environmental compliance contractors in Denver35
Industrial environmental compliance contractors in Chicago34
Industrial environmental compliance contractors in Austin33
Industrial environmental compliance contractors in Indianapolis32
Industrial environmental compliance contractors in Phoenix31
Industrial environmental compliance contractors in San Diego29
Industrial environmental compliance contractors in Tampa26

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 industrial environmental compliance 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 industrial environmental compliance contractors are there based in Houston, United States?

RevenueBase identified 86 industrial environmental compliance contractors headquartered in Houston, 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?

VLS Environmental Solutions, LLC, headquartered in Houston, tops this list with the largest team on record.

Which city has the most industrial environmental compliance contractors?

Houston leads with 86 headquartered companies, followed by New York (38) and Denver (35).

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 871 verified decision-maker contacts tracked across these 86 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 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 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.