Company lists · Data refreshed September 2026

Top 25 Environmental services companies based in Houston, United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 142 companies tracked

RevenueBase identified 142 environmental services companies headquartered in Houston, United States as of September 2026 and tracks 28,862 professional contacts across them, including 8,893 with verified work emails. Houston is the largest hub.

This list covers environmental services companies 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 19, 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 19, 2026 86% judged on-target in blind review

142Companies

28,862Contacts tracked

8,893Verified emails

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The 25 largest environmental services companies based in Houston, United States

Ranked by team size

Top 25 of 142 environmental services companies based in Houston, United States, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to environmental services companies: 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	WM	Strong evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	10001+	24,303 contacts →
	Strong evidence “WM is North America's leading provider of integrated environmental solutions.” Source: RevenueBase Database · checked Sep 19, 2026
2	FCC Environmental Services	Strong evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	1,001-5,000	828 contacts →
	Strong evidence “A Leader in Environmental Services FCC Environmental Services is proud to serve over 14 million Americans across 7 states, supported by a dedicated team of Our 1200+ vehicle fleet…” Source: RevenueBase Database · checked Sep 19, 2026
3	VLS Environmental Solutions, LLC	Indirect evidence	Houston, TX, United StatesHQ checked Sep 19, 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 19, 2026
4	Ironclad Environmental Solutions	Strong evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	201-500	263 contacts →
	Strong 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 19, 2026
5	GSI Environmental INC	Strong evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	201-500	259 contacts →
	Strong 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 19, 2026
6	Stage 3 Separation	Indirect evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	201-500	205 contacts →
	Indirect evidence “Stage 3 Separation is North America’s leading service provider for fluid conservation, solids control and waste mitigation.” Source: RevenueBase Database · checked Sep 19, 2026
7	Milestone Environmental	Strong evidence	Houston, TX, United StatesHQ checked Sep 19, 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 19, 2026
8	Corporate Care Restoration & Maintenance	Indirect evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	201-500	126 contacts →
	Indirect evidence “As a sustainability company, Corporate Care exists to improve the appearance, performance, and longevity of every surface in the buildings you manage.” Source: RevenueBase Database · checked Sep 19, 2026
9	Edge Engineering And Science, LLC	Indirect evidence	Houston, TX, United StatesHQ checked Sep 19, 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 19, 2026
10	Perennial Environmental Services	Strong evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	51-200	102 contacts →
	Strong 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 19, 2026
11	Streamtech Industrial	Strong evidence	Houston, TX, United StatesHQ checked Sep 19, 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 19, 2026
12	Aarc Environmental	Strong evidence	Houston, TX, United StatesHQ checked Sep 19, 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 19, 2026
13	Sage ATC Environmental Consulting	Strong evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	201-500	63 contacts →
	Strong evidence “Sage ATC Environmental Consulting is now Atlas.” Source: RevenueBase Database · checked Sep 19, 2026
14	Spirit Environmental Montrose Environmental Group	Indirect evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	51-200	54 contacts →
	Indirect evidence “In July of 2024, Spirit was acquired by Onterris.” Source: RevenueBase Database · checked Sep 19, 2026
15	Path Environmental Technology	Strong evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	51-200	53 contacts →
	Strong evidence “Path Environmental Technology, LLC is a technology-driven tank cleaning company.” Source: RevenueBase Database · checked Sep 19, 2026
16	RSB Environmental, An Alliance Technical Group Company	Strong evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	11-50	38 contacts →
	Strong 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 19, 2026
17	Phase Engineering, LLC	Strong evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	11-50	34 contacts →
	Strong 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 19, 2026
18	Slick Response Services	Strong evidence	Houston, TX, United StatesHQ checked Sep 19, 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 19, 2026
19	UES Professional Solutions 64, LLC	Strong evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	11-50	31 contacts →
	Strong 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 19, 2026
20	Heil Of Texas	Strong evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	51-200	31 contacts →
	Strong evidence “Heil Of Texas is an environmental services company based out of 5900 Wheeler St, Houston, Texas, United States.” Source: RevenueBase Database · checked Sep 19, 2026
21	American Allwaste	Indirect evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	201-500	26 contacts →
	Indirect evidence “American AllWaste provides non-hazardous liquid waste transportation and disposal, sewer infrastructure cleaning and inspection, renewables, composting, brown grease recovery, and…” Source: RevenueBase Database · checked Sep 19, 2026
22	Lighthouse Environmental Services, INC	Strong evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	51-200	26 contacts →
	Strong evidence “Lighthouse Environmental Services, Inc is an innovative service provider that continually offers the highest quality personnel and specialized equipment.” Source: RevenueBase Database · checked Sep 19, 2026
23	Kingsclean	Indirect evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	51-200	25 contacts →
	Indirect evidence “Industry Leader in the Science of Intelligent Cleaning for Health.” Source: RevenueBase Database · checked Sep 19, 2026
24	Ikon Environmental Solutions, LP	Strong evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	11-50	24 contacts →
	Strong evidence “IKON Environmental Solutions, LP (IKON) provides clients with unique solutions to environmental needs.” Source: RevenueBase Database · checked Sep 19, 2026
25	Sciphyn, INC	Indirect evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	11-50	24 contacts →
	Indirect evidence “Sciphyn's unique services are the first of its kind to offer benefits that are completely unique to the conventional methods of sludge removal and inspection.” Source: RevenueBase Database · checked Sep 19, 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 services companies. 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 services companies.
Partial evidence: Its own public description names part of environmental services companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name environmental services companies. 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 142 environmental services companies based in Houston, United States

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Environmental services companies based in Houston, United States at a glance

As of Sep 19, 2026

30.8%Verified-email coverage

203.3Average contacts per company

11-50Median size (employees)

100.0%Largest-city concentration · Houston

Sep 19, 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 142 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 services companies, 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 “environmental services companies”. 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 services companies), 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 services companies, 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, 8,893 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 19, 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 services companies by metro in the United States

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 services companies, 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 services companies are there based in Houston, United States?

RevenueBase identified 142 environmental services companies 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?

WM, headquartered in Houston, tops this list with the largest team on record.

Which city has the most environmental services companies?

Houston leads with 142 headquartered companies, followed by New York (100) and Atlanta (55).

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 8,893 verified decision-maker contacts tracked across these 142 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 19, 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.