Company lists · Data refreshed September 2026

Top 25 Decontamination service providers based in the United States

Name: Decontamination service providers based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 1,310 companies tracked

RevenueBase identified 1,310 decontamination service providers headquartered in the United States as of September 2026 and tracks 24,390 professional contacts across them, including 7,930 with verified work emails. Houston is the largest hub.

This list covers decontamination service providers 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 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

1,310Companies

24,390Contacts tracked

7,930Verified emails

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The 25 largest decontamination service providers based in the United States

Ranked by team size

Top 25 of 1,310 decontamination service providers based in the United States, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to decontamination service providers: 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	Clean Harbors	Indirect evidence	Norwell, MA, United StatesHQ checked Sep 19, 2026	10001+	8,924 contacts →
	Indirect evidence “Clean Harbors is North America’s leading provider of environmental and industrial services.” Source: RevenueBase Database · checked Sep 19, 2026
2	Hepaco, LLC	Indirect evidence	Charlotte, NC, United StatesHQ checked Sep 19, 2026	501-1,000	428 contacts →
	Indirect 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 19, 2026
3	CTEH	Indirect evidence	North Little Rock, AR, United StatesHQ checked Sep 19, 2026	201-500	336 contacts →
	Indirect evidence “CTEH, LLC's purpose is preparing for and responding to a company's or community’s worst day.” Source: RevenueBase Database · checked Sep 19, 2026
4	Sevenson Environmental Services INC	Indirect evidence	Niagara Falls, NY, United StatesHQ checked Sep 19, 2026	501-1,000	277 contacts →
	Indirect evidence “Sevenson Environmental Services, Inc.” Source: RevenueBase Database · checked Sep 19, 2026
5	Environmental Restoration LLC	Indirect evidence	Saint Louis, MO, United StatesHQ checked Sep 19, 2026	201-500	273 contacts →
	Indirect 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 19, 2026
6	Aftermath Services	Indirect evidence	Aurora, IL, United StatesHQ checked Sep 19, 2026	201-500	257 contacts →
	Indirect evidence “With over 25 years of industry-leading experience, Aftermath Services® is the only trauma and hazard remediation company consistently elevating standards of care and…” Source: RevenueBase Database · checked Sep 19, 2026
7	Alliance Environmental Group, LLC	Indirect evidence	Azusa, CA, United StatesHQ checked Sep 19, 2026	501-1,000	254 contacts →
	Indirect evidence “Alliance is one of the most experienced and trusted environmental contractors in California.” Source: RevenueBase Database · checked Sep 19, 2026
8	Controlled Contamination Services	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 19, 2026	1,001-5,000	253 contacts →
	Indirect evidence “Controlled Contamination Services is the leading provider of enterprise solutions for the pharmaceutical, biotech, medical device, electronic, data center, semiconductor…” Source: RevenueBase Database · checked Sep 19, 2026
9	Miller Environmental Group, INC	Indirect evidence	Calverton, NY, United StatesHQ checked Sep 19, 2026	201-500	231 contacts →
	Indirect evidence “Miller Environmental Group is a leading environmental response, remediation and restoration services company, providing industry, government, commercial and residential customers…” Source: RevenueBase Database · checked Sep 19, 2026
10	Patriot Environmental Services	Indirect evidence	Signal Hill, CA, United StatesHQ checked Sep 19, 2026	201-500	223 contacts →
	Indirect evidence “Patriot Environmental Services, a Crystal Clean company, is a leading environmental service provider with clients throughout the Southwestern United States.” Source: RevenueBase Database · checked Sep 19, 2026
11	BAY West LLC	Indirect evidence	St. Paul, MN, United StatesHQ checked Sep 19, 2026	201-500	187 contacts →
	Indirect evidence “Bay West is an environmental and industrial services provider for site investigations, groundwater and soil remediation, munitions cleanup, hazardous waste management, industrial…” Source: RevenueBase Database · checked Sep 19, 2026
12	Macqueen	Indirect evidence	St. Paul, MN, United StatesHQ checked Sep 19, 2026	201-500	146 contacts →
	Indirect evidence “For more than 60 years, MacQueen has served as the trusted provider of world-class environmental and emergency solutions across the upper Midwest providing private companies…” Source: RevenueBase Database · checked Sep 19, 2026
13	Northstar Contracting Group, INC	Indirect evidence	Tallahassee, FL, United StatesHQ checked Sep 19, 2026	1,001-5,000	138 contacts →
	Indirect evidence “The World’s Most Comprehensive Facility & Environmental Solutions Company - We Bring Answers.” Source: RevenueBase Database · checked Sep 19, 2026
14	Ee&g Companies	Indirect evidence	Miami Lakes, FL, United StatesHQ checked Sep 19, 2026	201-500	136 contacts →
	Indirect evidence “The EE & G Group dates back to 1986 and has been in business for over 33 years.” Source: RevenueBase Database · checked Sep 19, 2026
15	First Call Environmental	Indirect evidence	Ashland, VA, United StatesHQ checked Sep 19, 2026	51-200	122 contacts →
	Indirect evidence “First Call is a full service Emergency Response firm founded in 2009.” Source: RevenueBase Database · checked Sep 19, 2026
16	Service Master By Mckenzie Taylor	Indirect evidence	Springfield, OR, United StatesHQ checked Sep 19, 2026	11-50	116 contacts →
	Indirect evidence “We are a Disaster Restoration and Cleaning Company As America’s most trusted name in cleaning and restoration, our friendly, licensed professionals are here to deliver comfort…” Source: RevenueBase Database · checked Sep 19, 2026
17	Cleaning Guys, LLC	Indirect evidence	Fort Worth Tx, TX, United StatesHQ checked Sep 19, 2026	1,001-5,000	115 contacts →
	Indirect evidence “CG, an EnviroServe Company (CG), founded in 1992, is a full-service environmental and hazmat cleanup company.” Source: RevenueBase Database · checked Sep 19, 2026
18	Knight Commercial	Indirect evidence	Addison, TX, United StatesHQ checked Sep 19, 2026	201-500	114 contacts →
	Indirect evidence “We have several divisions of Knight Commercial with personnel specifically dedicated and trained to fulfill these services to serve our customers and exceed their expectations…” Source: RevenueBase Database · checked Sep 19, 2026
19	Unitech Services Group, INC	Indirect evidence	Longmeadow, MA, United StatesHQ checked Sep 19, 2026	501-1,000	114 contacts →
	Indirect evidence “UniTech is the world leader in radiological laundering and protective clothing programs.” Source: RevenueBase Database · checked Sep 19, 2026
20	Ampol American Pollution Control, Corp	Indirect evidence	New Iberia, LA, United StatesHQ checked Sep 19, 2026	201-500	113 contacts →
	Indirect evidence “American Pollution Control, Corp.(AMPOL), the industry leader in oil spill response and total environmental solutions, focuses on restoration, going beyond response and cleanup.” Source: RevenueBase Database · checked Sep 19, 2026
21	ALLOY	Indirect evidence	Export, PA, United StatesHQ checked Sep 19, 2026	501-1,000	108 contacts →
	Indirect evidence “Alloy performs demolition and environmental hazard remediation services for some of the nation’s leading firms, institutions, and government agencies.” Source: RevenueBase Database · checked Sep 19, 2026
22	Shamrock Environmental Corporation	Indirect evidence	Browns Summit, NC, United StatesHQ checked Sep 19, 2026	201-500	107 contacts →
	Indirect evidence “Our people, facilities, expertise and equipment allow us to handle a diverse range of projects – from tank cleaning to emergency response to complex environmental problems that…” Source: RevenueBase Database · checked Sep 19, 2026
23	Cliff Berry, INC	Indirect evidence	Fort Lauderdale, FL, United StatesHQ checked Sep 19, 2026	51-200	106 contacts →
	Indirect evidence “24/7 Emergency Services Hotline 1-800-899-7745 Cliff Berry, Inc.” Source: RevenueBase Database · checked Sep 19, 2026
24	Miller Environmental, INC	Indirect evidence	Orange, CA, United StatesHQ checked Sep 19, 2026	201-500	106 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
25	American Water Damage	Indirect evidence	Arlington, TX, United StatesHQ checked Sep 19, 2026	51-200	101 contacts →
	Indirect evidence “American Water Damage provides emergency services to Commercial & Residential properties after water related disasters like floods, sewage backup, broken pipes as well as…” 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: decontamination service providers. 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 decontamination service providers.
Partial evidence: Its own public description names part of decontamination service providers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name decontamination service providers. 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 1,310 decontamination service providers based in the United States

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Decontamination service providers based in the United States at a glance

As of Sep 19, 2026

32.5%Verified-email coverage

18.6Average contacts per company

11-50Median size (employees)

1.8%Largest-city concentration · Houston

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

454

11-50

592

51-200

197

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 1,310 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 decontamination service providers, 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 “decontamination service providers”. 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 decontamination service providers), 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 decontamination service providers, 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, 7,930 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.

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 decontamination service providers, 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 decontamination service providers are there based in the United States?

RevenueBase identified 1,310 decontamination service providers 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?

Clean Harbors, headquartered in Norwell, tops this list with the largest team on record.

Which city has the most decontamination service providers?

Houston leads with 23 headquartered companies, followed by Denver (14) and Dallas (13).

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 7,930 verified decision-maker contacts tracked across these 1,310 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.