Company lists · Data refreshed September 2026

Top 25 Emergency response consulting firms based in Houston, United States

RevenueBase identified 115 emergency response consulting firms headquartered in Houston, United States as of September 2026 and tracks 2,740 professional contacts across them, including 600 with verified work emails. Across the United States, Houston is the largest hub for this category.

This list covers emergency response consulting firms 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 28, 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 28, 2026 86% judged on-target in blind review
115Companies
2,740Contacts tracked
600Verified emails
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The 25 largest emergency response consulting firms based in Houston, United States

Ranked by team size
Top 25 of 115 emergency response consulting firms based in Houston, United States, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to emergency response consulting firms: 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceHouston, TX, United StatesHQ checked Sep 28, 2026501-1,000281 contacts →

Indirect evidence

“Thompson Safety, headquartered in Houston, TX and located in 23 markets across the United States, provides a comprehensive suite of on-site first aid and fire protection services…”

Source: RevenueBase Database · checked Sep 28, 2026
2Strong evidenceHouston, TX, United StatesHQ checked Sep 28, 2026201-500183 contacts →

Strong evidence

“Wild Well Control continues its tradition of being the global leader in emergency response, well control, response planning, and training by offering a range of services to meet…”

Source: RevenueBase Database · checked Sep 28, 2026
3Indirect evidenceHouston, TX, United StatesHQ checked Sep 28, 202611-50103 contacts →

Indirect evidence

“Established in 1981, Garner Environmental Services, Inc.”

Source: RevenueBase Database · checked Sep 28, 2026
4Indirect evidenceHouston, TX, United StatesHQ checked Sep 28, 202651-20063 contacts →

Indirect evidence

“RCP is the regulatory compliance and risk management expert for pipelines, facilities, and terminal operations.”

Source: RevenueBase Database · checked Sep 28, 2026
5Indirect evidenceHouston, TX, United StatesHQ checked Sep 28, 2026n/a51 contacts →

Indirect evidence

“ARE YOU CRISIS-READY?”

Source: RevenueBase Database · checked Sep 28, 2026
6Indirect evidenceHouston, TX, United StatesHQ checked Sep 28, 202611-5050 contacts →

Indirect evidence

“We are the trusted Advisor to corporate officers and boards on mitigating Operational/EHS Risks and unlocking value for global energy, chemical and industrial companies.”

Source: RevenueBase Database · checked Sep 28, 2026
7Partial evidenceHouston, TX, United StatesHQ checked Sep 28, 202611-5046 contacts →

Partial evidence

“International Safety Systems, Inc.(ISS) is a consulting company providing cost effective and high quality industrial hygiene and safety services to 35+ countries from its offices…”

Source: RevenueBase Database · checked Sep 28, 2026
8Indirect evidenceHouston, TX, United StatesHQ checked Sep 28, 2026201-50043 contacts →

Indirect evidence

“Headquartered in Houston, TX, and already with six locations across the major petroleum plays of the U.S, EnerSafe is a growing industry presence in our four core…”

Source: RevenueBase Database · checked Sep 28, 2026
9Indirect evidenceHouston, TX, United StatesHQ checked Sep 28, 202651-20039 contacts →

Indirect evidence

“The Company J.”

Source: RevenueBase Database · checked Sep 28, 2026
10Strong evidenceHouston, TX, United StatesHQ checked Sep 28, 202611-5032 contacts →

Strong evidence

“Full service environmental emergency response contractor with associated business lines in industrial maintenance and cleaning services.”

Source: RevenueBase Database · checked Sep 28, 2026
11Indirect evidenceHouston, TX, United StatesHQ checked Sep 28, 202611-5031 contacts →

Indirect evidence

“Providing disaster recovery and risk planning services that focus on expediting the restoration of your operations, mitigating your disaster related financial losses, and…”

Source: RevenueBase Database · checked Sep 28, 2026
12Partial evidenceHouston, TX, United StatesHQ checked Sep 28, 202611-5031 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 28, 2026
13Indirect evidenceHouston, TX, United StatesHQ checked Sep 28, 202651-20029 contacts →

Indirect evidence

“GryphonESP provides a large variety of services for the oil and gas industry.”

Source: RevenueBase Database · checked Sep 28, 2026
14Indirect evidenceHouston, TX, United StatesHQ checked Sep 28, 202651-20028 contacts →

Indirect evidence

“LaborNOW is a nationwide workforce solutions company specializing in skilled staffing, recruiting, and workforce management for the construction, disaster recovery, restoration…”

Source: RevenueBase Database · checked Sep 28, 2026
15Partial evidenceHouston, TX, United StatesHQ checked Sep 28, 20261-1023 contacts →

Partial evidence

“Blast Resource Group offers industry a unique value proposition in merging consulting engineering and procurement in a single-source provider aimed at providing solutions for…”

Source: RevenueBase Database · checked Sep 28, 2026
16Indirect evidenceHouston, TX, United StatesHQ checked Sep 28, 2026201-50021 contacts →

Indirect evidence

“Delta Vector is a Veteran Owned US Business, which operates as an integrated global turn key solutions provider.”

Source: RevenueBase Database · checked Sep 28, 2026
17Partial evidenceHouston, TX, United StatesHQ checked Sep 28, 202651-20016 contacts →

Partial evidence

“Experienced emergency medical staff for events & projects of any duration Dedicated safety techs & managers for daily support & for projects of any duration Skillful rescue teams…”

Source: RevenueBase Database · checked Sep 28, 2026
18Indirect evidenceHouston, TX, United StatesHQ checked Sep 28, 202611-5015 contacts →

Indirect evidence

“At the Heart of Business for 22 Years, SafetyMed provides tailored safety solutions to businesses, organizations, and individuals.”

Source: RevenueBase Database · checked Sep 28, 2026
19Indirect evidenceHouston, TX, United StatesHQ checked Sep 28, 202611-5013 contacts →

Indirect evidence

“AARC Consultants serves businesses and governmental entities by conducting third party Risk and Resilience assessments, identifying Cyber Security vulnerabilities, developing…”

Source: RevenueBase Database · checked Sep 28, 2026
20Indirect evidenceHouston, TX, United StatesHQ checked Sep 28, 202611-5012 contacts →

Indirect evidence

“Everyday Hunter Onsite builds on a 20-plus-year reputation for delivering unparalleled quality and service.”

Source: RevenueBase Database · checked Sep 28, 2026
21Indirect evidenceHouston, TX, United StatesHQ checked Sep 28, 202651-20011 contacts →

Indirect evidence

“ZALEMO strives to deliver a safe and secure work environment with all of our industry partners!”

Source: RevenueBase Database · checked Sep 28, 2026
22Partial evidenceHouston, TX, United StatesHQ checked Sep 28, 202611-509 contacts →

Partial evidence

“Risk Integrity Safety Knowledge, Inc.(RISK, Inc.) is a global safety consulting company offering a full range of technical consulting, training, and staffing services in Process…”

Source: RevenueBase Database · checked Sep 28, 2026
23Strong evidenceHouston, TX, United StatesHQ checked Sep 28, 20261-109 contacts →

Strong evidence

“NJ Resources, Inc.(NJR) is a well-established consulting company specializing in emergency response and crisis management throughout the world.”

Source: RevenueBase Database · checked Sep 28, 2026
24Partial evidenceHouston, TX, United StatesHQ checked Sep 28, 202611-508 contacts →

Partial evidence

“Part of Brookes Bell and providing the same high-quality level of experience and expertise, 3D Marine is a premier full-service consulting group experienced in all aspects of…”

Source: RevenueBase Database · checked Sep 28, 2026
25Indirect evidenceHouston, TX, United StatesHQ checked Sep 28, 20261-107 contacts →

Indirect evidence

“Our Mission: Be the vanguard of safeguarding essential industries against the ever-evolving landscape of physical and cyber threats.”

Source: RevenueBase Database · checked Sep 28, 2026

Showing 25 of 115 emergency response consulting firms based in Houston, United States

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Emergency response consulting firms based in Houston, United States at a glance

As of Sep 28, 2026
21.9%Verified-email coverage
23.8Average contacts per company
11-50Median size (employees)
Sep 28, 2026Page data refreshed

Companies by employee count

1-10
53
11-50
41
51-200
11
201-500
5
501-1,000
2
1,001-5,000
1
10001+
2

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 115 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 emergency response consulting firms, 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 “emergency response consulting firms”. 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 emergency response consulting firms), 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 emergency response consulting firms, 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, 600 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 28, 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 emergency response consulting firms, 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 emergency response consulting firms are there based in Houston, United States?

RevenueBase identified 115 emergency response consulting firms 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?

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

Which city in the United States has the most emergency response consulting firms?

Houston leads the United States with 115 headquartered companies, followed by New York (65) and Washington (44).

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 600 verified decision-maker contacts tracked across these 115 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 28, 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.