Company lists · Data refreshed October 2026

Top 25 Environmental services contractors based in Denver, United States

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

Compiled by the RevenueBase Data Team Data refreshed Oct 12, 2026 50 companies tracked

RevenueBase identified 50 company matches for environmental services contractors associated with Denver, United States as of October 2026 and tracks 985 professional contacts across them, including 360 with verified work emails. Across the United States, Houston is the largest hub for this category (129 companies); Denver has 50.

This list covers company matches for environmental services contractors associated with Denver, 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

50Companies

985Contacts tracked

360Verified emails

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The 25 largest environmental services contractors based in Denver, United States

Ranked by team size

Top 25 of 50 company matches for environmental services contractors based in Denver, 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	CCS Facility Services	Exact match	Denver, CO, United StatesHQ recorded Oct 12, 2026	5,001-10,000	318 contacts →
	Exact match “Facility vendors should support your work, not hold it back.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
2	Spheros Environmental	Exact match	Denver, CO, United StatesHQ recorded Oct 12, 2026	201-500	132 contacts →
	Exact match “Environmental insight for complex real-world decisions Spheros Environmental helps clients make clear, defensible decisions in complex environments.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
3	Kleen-Tech Services, LLC	Exact match	Denver, CO, United StatesHQ recorded Oct 12, 2026	1,001-5,000	128 contacts →
	Exact match “Established in 1993, Kleen-Tech provides custodial and facility maintenance services across more than 89 million square feet of commercial and government facilities for long-term…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
4	Geotech Environmental Equipment, INC	Exact match	Denver, CO, United StatesHQ recorded Oct 12, 2026	51-200	81 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
5	Quandary Consultants	Exact match	Denver, CO, United StatesHQ recorded Oct 12, 2026	51-200	46 contacts →
	Exact match “Quandary Consultants, LLC (QC) is an environmental and regulatory consulting company.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
6	Ayuda Companies	Exact match	Denver, CO, United StatesHQ recorded Oct 12, 2026	51-200	44 contacts →
	Exact match “Established in 2002, Ayuda has successfully performed $300M+ in government and commercial contracts.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
7	Colorado Hazard Control, LLC	Exact match	Denver, CO, United StatesHQ recorded Oct 12, 2026	51-200	26 contacts →
	Exact match “At Colorado Hazard Control, we know that every project is unique.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
8	Solum Consulting Group	Exact match	Denver, CO, United StatesHQ recorded Oct 12, 2026	1-10	18 contacts →
	Exact match “The environment and sustainability are key considerations across the mining, energy and resources sectors.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
9	AET Environmental	Exact match	Denver, CO, United StatesHQ recorded Oct 12, 2026	11-50	17 contacts →
	Exact match “AET Environmental, a Heritage-Crystal Clean Company, is a leading provider of environmental services, hazardous waste handling, compliance, and remediation.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
10	Urban Solution Group	Exact match	Denver, CO, United StatesHQ recorded Oct 12, 2026	11-50	15 contacts →
	Exact match “Urban Solution Group is the turnkey solution for mitigating compliance and nuisance impacts for industrial, urban operations.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
11	Auxilio Management Services	Exact match	Denver, CO, United StatesHQ recorded Oct 12, 2026	11-50	13 contacts →
	Exact match “Auxilio is an Economically Disadvantaged Women-Owned Small Business (EDWOSB).” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
12	Quest Environmental	Exact match	Denver, CO, United StatesHQ recorded Oct 12, 2026	11-50	12 contacts →
	Exact match “At QUEST Environmental, we're dedicated to ensuring you live and work in the safest, healthiest environments possible.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
13	Accord Building Services LLC	Exact match	Denver, CO, United StatesHQ recorded Oct 12, 2026	1-10	12 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
14	Environmental Technical Solutions, LLC	Exact match	Denver, CO, United StatesHQ recorded Oct 12, 2026	1-10	11 contacts →
	Exact match “ETS provides a dynamic team of experts needed to support a wide range of environmental services.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
15	Soli Technical, LLC	Exact match	Denver, CO, United StatesHQ recorded Oct 12, 2026	1-10	7 contacts →
	Exact match “Soli brings decades of environmental and engineering experience to solve your problems in a cost effective, practical, and timely manner.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
16	Rockwood LLC	Exact match	Denver, CO, United StatesHQ recorded Oct 12, 2026	1-10	5 contacts →
	Exact match “Rockwood is a leading provider of environmental solution services specifically catering to the oil and gas industry.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
17	Omni PRO Cleaning Company	Exact match	Denver, CO, United StatesHQ recorded Oct 12, 2026	1-10	4 contacts →
	Exact match “Omni Pro Cleaning Company is a facilities services company based out of 455 S Lipan St, Denver, Colorado, United States.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
18	Slosky & Company	Exact match	Denver, CO, United StatesHQ recorded Oct 12, 2026	1-10	2 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
19	Bristlecone Ecology	Exact match	Denver, CO, United StatesHQ recorded Oct 12, 2026	1-10	2 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
20	Swift Operating Partners LLC	Exact match	Denver, CO, United StatesHQ recorded Oct 12, 2026	1-10	2 contacts →
	Exact match “SWIFT Operating Partners is proud to offer an extensive range of environmental services.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
21	Terranext LLC	Exact match	Denver, CO, United StatesHQ recorded Oct 12, 2026	51-200	1 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
22	Colorado Safety Services, LLC	Exact match	Denver, CO, United StatesHQ recorded Oct 12, 2026	1-10	1 contacts →
	Exact match “At Colorado Safety Services, we provide an extensive array of environmental, safety, and health solutions, built on 25 years of hands-on experience in diverse sectors.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
23	Megannum, INC	Exact match	Denver, CO, United StatesHQ recorded Oct 12, 2026	1-10	1 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
24	L&k Environmental	Exact match	Denver, CO, United StatesHQ recorded Oct 12, 2026	1-10	1 contacts →
	Exact match “Whether you are going through an insurance claim, a real estate transaction, or looking to do a remodel we hope to give you peace of mind that L&K Environmental is the right…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
25	DRY OUT Restoration	Exact match	Denver, CO, United StatesHQ recorded Oct 12, 2026	1-10	1 contacts →
	Exact match “Water Fire 🦠 Mold Asbestos” 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 services 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 50 environmental services contractors based in Denver, United States

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Environmental services contractors based in Denver, United States at a glance

As of Oct 12, 2026

36.5%Verified-email coverage

19.7Average contacts per company

1-10Median size (employees)

Oct 12, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

5,001-10,000

Email recency for this list is measured across the whole United States list rather than for Denver, so it is reported there. Company counts and contact totals on this page are exact for Denver, over 50 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 Denver, United States whose business descriptions match “environmental services 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 360 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 services 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 services contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

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

RevenueBase identified 50 company matches for environmental services contractors associated with Denver, 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?

CCS Facility Services 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 services contractors?

Houston leads the United States with 129 company records, followed by New York (98) and San Diego (51). Denver has 50.

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 360 professional contacts with verified work emails tracked across these 50 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.