Company lists · Data refreshed September 2026

Top 22 Environmental engineering firms based in Denver, United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 38 companies tracked

RevenueBase identified 38 company matches for environmental engineering firms associated with Denver, United States as of September 2026 and tracks 2,009 professional contacts across them, including 1,026 with verified work emails. Across the United States, Houston is the largest hub for this category (138 companies); Denver has 38.

This list covers company matches for environmental engineering firms 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 September 16, 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 Sep 16, 2026 How this list was built

38Companies

2,009Contacts tracked

1,026Verified emails

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The 22 largest environmental engineering firms based in Denver, United States

Ranked by team size

Top 22 of 38 company matches for environmental engineering firms based in Denver, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 16, 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	Knight Piesold	Exact match	Denver, CO, United StatesHQ recorded Sep 16, 2026	1,001-5,000	1,231 contacts →
	Exact match “Knight Piésold is an employee-owned, global consulting firm providing specialist services to the mining, power, water resources, and infrastructure industries.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
2	CTL Thompson	Exact match	Denver, CO, United StatesHQ recorded Sep 16, 2026	201-500	189 contacts →
	Exact match “CTL\|Thompson (CTL\|T) has been providing innovative engineering solutions throughout Colorado since 1971.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
3	LRE Water A Spheros Environmental Company	Exact match	Denver, CO, United StatesHQ recorded Sep 16, 2026	51-200	94 contacts →
	Exact match “LRE Water is now Spheros Environmental.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
4	Wright Water Engineers, INC	Exact match	Denver, CO, United StatesHQ recorded Sep 16, 2026	11-50	65 contacts →
	Exact match “Wright Water Engineers, Inc.(WWE) is a water resources consulting engineering firm that was founded in 1961.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
5	S. A. Miro, INC	Exact match	Denver, CO, United StatesHQ recorded Sep 16, 2026	51-200	62 contacts →
	Exact match “At S.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
6	Spheros Environmental	Exact match	Denver, CO, United StatesHQ recorded Sep 16, 2026	201-500	48 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 · Sep 16, 2026 · View company records in RevenueBase
7	Ayuda Companies	Exact match	Denver, CO, United StatesHQ recorded Sep 16, 2026	51-200	45 contacts →
	Exact match “Established in 2002, Ayuda has successfully performed $300M+ in government and commercial contracts.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
8	Quandary Consultants	Exact match	Denver, CO, United StatesHQ recorded Sep 16, 2026	51-200	40 contacts →
	Exact match “Quandary Consultants, LLC (QC) is an environmental and regulatory consulting company.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
9	Lincoln & Creed, INC	Exact match	Denver, CO, United StatesHQ recorded Sep 16, 2026	n/a	31 contacts →
	Exact match “Lauren Byrne founded Lincoln & Creed, Inc after ten years of crafting successful recruiting processes for a variety of technical clients.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
10	AET Environmental	Exact match	Denver, CO, United StatesHQ recorded Sep 16, 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 · Sep 16, 2026 · View company records in RevenueBase
11	Quest Environmental	Exact match	Denver, CO, United StatesHQ recorded Sep 16, 2026	11-50	15 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 · Sep 16, 2026 · View company records in RevenueBase
12	Solum Consulting Group	Exact match	Denver, CO, United StatesHQ recorded Sep 16, 2026	1-10	15 contacts →
	Exact match “The environment and sustainability are key considerations across the mining, energy and resources sectors.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
13	Proof Civil	Exact match	Denver, CO, United StatesHQ recorded Sep 16, 2026	1-10	13 contacts →
	Exact match “Proof Civil is a leading Civil Engineering consulting services firm for land development projects in the Rocky Mountain region.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
14	Environmental Technical Solutions, LLC	Exact match	Denver, CO, United StatesHQ recorded Sep 16, 2026	1-10	9 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 · Sep 16, 2026 · View company records in RevenueBase
15	Element Water Consulting	Exact match	Denver, United StatesHQ recorded Sep 16, 2026	1-10	7 contacts →
	Exact match “ELEMENT provides water resources engineering and hydrologic services ranging from local-level investigations to broader basin and inter-basin projects.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
16	Enertia Consulting Group, LLC	Exact match	Denver, CO, United StatesHQ recorded Sep 16, 2026	1-10	7 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
17	Soli Technical, LLC	Exact match	Denver, CO, United StatesHQ recorded Sep 16, 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 · Sep 16, 2026 · View company records in RevenueBase
18	Slosky & Company	Exact match	Denver, CO, United StatesHQ recorded Sep 16, 2026	1-10	2 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
19	Bristlecone Ecology	Exact match	Denver, CO, United StatesHQ recorded Sep 16, 2026	1-10	2 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
20	Terranext LLC	Exact match	Denver, CO, United StatesHQ recorded Sep 16, 2026	51-200	1 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
21	Megannum, INC	Exact match	Denver, CO, United StatesHQ recorded Sep 16, 2026	1-10	1 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
22	L&k Environmental	Exact match	Denver, CO, United StatesHQ recorded Sep 16, 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 · Sep 16, 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 engineering firms”. 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 22 of 38 environmental engineering firms based in Denver, United States

See the full list, filter by size, metro and specialty, and access 1,026 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Environmental engineering firms based in Denver, United States at a glance

As of Sep 16, 2026

51.1%Verified-email coverage

52.9Average contacts per company

1-10Median size (employees)

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

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 38 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 engineering firms” 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 1,026 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 September 16, 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 engineering firms 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 engineering firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many environmental engineering firms are there based in Denver, United States?

RevenueBase identified 38 company matches for environmental engineering firms associated with Denver, United States as of September 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?

Knight Piesold 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 engineering firms?

Houston leads the United States with 138 company records, followed by New York (101) and Austin (73). Denver has 38.

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 1,026 professional contacts with verified work emails tracked across these 38 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 September 16, 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.