Company lists · Data refreshed September 2026

Top 25 Environmental compliance software companies based in the United States

Name: Environmental compliance software companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 2, 2026 792 companies tracked

RevenueBase identified 792 environmental compliance software companies headquartered in the United States as of September 2026 and tracks 16,584 professional contacts across them, including 7,722 with verified work emails and 6,374 with mobile numbers. Houston is the largest hub.

This list covers environmental compliance software companies 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 2, 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 RevenueBase Smart Search rating on every row Refreshed Sep 2, 2026 86% judged on-target in blind review

792Companies

16,584Contacts tracked

7,722Verified emails

6,374Mobile numbers

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The 25 largest environmental compliance software companies based in the United States

Ranked by team size

Top 25 of 792 environmental compliance software companies based in the United States, ranked by team size, largest first. Data refreshed Sep 2, 2026. RevenueBase Smart Search rates how each company's information relates to environmental compliance software 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	Sphera	Indirect evidence	Chicago, IL, United States	1,001-5,000	1,345 contacts →
	Indirect evidence “Sphera creates a safer, more sustainable and productive world.” Source: RevenueBase Database · checked Sep 2, 2026
2	Alliance Technical Group	Partial evidence	Pittsburgh, PA, United States	1,001-5,000	946 contacts →
	Partial evidence “Alliance is a new kind of environmental services company-powered by innovation, focused on service, and committed to client success.” Source: RevenueBase Database · checked Sep 2, 2026
3	Velocityehs	Partial evidence	Tampa, FL, United States	501-1,000	571 contacts →
	Partial evidence “VelocityEHS is the global leader in EHS & Sustainability software, pioneering human-centered AI to make workplaces safer, faster.” Source: RevenueBase Database · checked Sep 2, 2026
4	Watershed	Indirect evidence	San Francisco, CA, United States	201-500	537 contacts →
	Indirect evidence “Watershed is the enterprise sustainability platform.” Source: RevenueBase Database · checked Sep 2, 2026
5	VLS Environmental Solutions, LLC	Partial evidence	Houston, TX, United States	1,001-5,000	477 contacts →
	Partial evidence “At VLS, we address your company’s most significant hurdles with waste management and compliance through sustainable solutions.” Source: RevenueBase Database · checked Sep 2, 2026
6	Enhesa	Partial evidence	Arlington, VA, United States	201-500	463 contacts →
	Partial evidence “At Enhesa we empower the world’s largest businesses to achieve compliance, manage risk, and drive sustainability with clear, actionable insights.” Source: RevenueBase Database · checked Sep 2, 2026
7	Enablon	Strong evidence	Chicago, IL, United States	501-1,000	438 contacts →
	Strong evidence “Enablon, part of Wolters Kluwer's Corporate Performance & ESG division, is the world's leading provider of integrated software solutions for Environment, Health and Safety (EHS)…” Source: RevenueBase Database · checked Sep 2, 2026
8	ROUX	Partial evidence	Houston, TX, United States	201-500	435 contacts →
	Partial evidence “Founded 40 years ago, Roux is recognized for being a highly effective, client-focused environmental consulting and management firm.” Source: RevenueBase Database · checked Sep 2, 2026
9	Aithent INC	Partial evidence	New York, NY, United States	201-500	414 contacts →
	Partial evidence “Aithent creates high-value regulatory compliance management solutions for financial services, government, healthcare and insurance organizations around the globe.” Source: RevenueBase Database · checked Sep 2, 2026
10	Picarro	Partial evidence	Santa Clara, CA, United States	201-500	298 contacts →
	Partial evidence “Reducing emissions, detecting leaks, mitigating risk, optimizing operations, ensuring compliance and advancing research are some of the challenges facing our clients.” Source: RevenueBase Database · checked Sep 2, 2026
11	Opus Inspection Technologies	Indirect evidence	Brookfield, WI, United States	201-500	264 contacts →
	Indirect evidence “Opus Inspection Technologies is a leader in developing, implementing and managing innovative technology and system solutions that enable customers worldwide to address their…” Source: RevenueBase Database · checked Sep 2, 2026
12	Tanknology	Strong evidence	Austin, TX, United States	201-500	228 contacts →
	Strong evidence “Tanknology is the world's largest provider of tank testing and environmental compliance services for petroleum systems.” Source: RevenueBase Database · checked Sep 2, 2026
13	August Mack Environmental, INC	Indirect evidence	Independence, OH, United States	51-200	210 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 2, 2026
14	Helix Environmental Planning, INC	Partial evidence	Folsom, CA, United States	201-500	197 contacts →
	Partial evidence “HELIX Environmental Planning, Inc.(HELIX) is an employee-owned, environmental consulting firm established in 1991 and with offices in San Diego, Los Angeles, Orange, Riverside…” Source: RevenueBase Database · checked Sep 2, 2026
15	Source Intelligence	Partial evidence	San Francisco, CA, United States	201-500	175 contacts →
	Partial evidence “Source Intelligence is a leading provider of supply chain compliance and ESG data management solutions.” Source: RevenueBase Database · checked Sep 2, 2026
16	Earthsoft	Partial evidence	Pensacola, FL, United States	51-200	167 contacts →
	Partial evidence “EarthSoft is the recognized leader in providing environmental and geotechnical data management and decision support systems for industrial organizations, government agencies…” Source: RevenueBase Database · checked Sep 2, 2026
17	Ecorp Consulting, INC	Indirect evidence	Fresno, CA, United States	51-200	165 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 2, 2026
18	U.S. Compliance Environmental, Health & Safety Consulting	Strong evidence	Excelsior, MN, United States	51-200	162 contacts →
	Strong evidence “The leader in environmental, health and safety compliance solutions.” Source: RevenueBase Database · checked Sep 2, 2026
19	Red-On-Line	Partial evidence	New York, United States	201-500	153 contacts →
	Partial evidence “Since Red-on-line has been supporting companies in managing their environmental, health and safety (EHS) risks, both locally and internationally.” Source: RevenueBase Database · checked Sep 2, 2026
20	Cleanair Engineering	Indirect evidence	Powell, TN, United States	51-200	152 contacts →
	Indirect evidence “Since its founding in 1972, CleanAir has an established reputation for excellence on projects of all sizes, ranging from boiler, APC equipment and cooling tower efficiency testing…” Source: RevenueBase Database · checked Sep 2, 2026
21	Ensolum, LLC	Partial evidence	Dallas, TX, United States	51-200	139 contacts →
	Partial evidence “OUR MISSION is to combine sustainable environmental solutions with forward-thinking, cost-effective, innovative, and value-added technologies that balance our clients’ economic…” Source: RevenueBase Database · checked Sep 2, 2026
22	Mostardi Platt	Partial evidence	Mendota Heights, MN, United States	51-200	137 contacts →
	Partial evidence “Since the passage of original environmental legislation nearly four decades ago, both private and public industry have turned to Mostardi Platt for guidance in complying with air…” Source: RevenueBase Database · checked Sep 2, 2026
23	Redica Systems	Indirect evidence	Pleasanton, CA, United States	51-200	125 contacts →
	Indirect evidence “Redica Systems helps life sciences companies stay inspection ready, manage supplier risk, and keep pace with evolving global regulations.” Source: RevenueBase Database · checked Sep 2, 2026
24	ESC Spectrum Corporation	Indirect evidence	Pensacola, FL, United States	51-200	112 contacts →
	Indirect evidence “Based in Austin, Texas, ESC Spectrum is a leading provider of products and services for customers in a variety of industries, from Electric Power, Petroleum, and Ethanol to Glass…” Source: RevenueBase Database · checked Sep 2, 2026
25	Hart & Hickman, PC	Partial evidence	Raleigh, NC, United States	51-200	101 contacts →
	Partial evidence “Hart & Hickman PC provides environmental consulting services to commercial, industrial, and governmental clients throughout the Southeast US.” Source: RevenueBase Database · checked Sep 2, 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 compliance software 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 compliance software companies.
Partial evidence: Its own public description names part of environmental compliance software companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name environmental compliance software 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 792 environmental compliance software companies based in the United States

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Environmental compliance software companies based in the United States at a glance

As of Sep 2, 2026

46.6%Verified-email coverage

38.4%Mobile-number coverage

20.9Average contacts per company

1-10Median size (employees)

4.8%Largest-city concentration · Houston

Sep 2, 2026Page data refreshed

Companies by employee count

1-10

408

11-50

280

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

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 compliance software 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 the United States whose own description of what they do matches “environmental compliance software 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 compliance software 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 compliance software companies, 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, 7,722 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 2, 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 compliance software companies by metro

Environmental compliance software companies in Houston38

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 compliance software 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 compliance software companies are there based in the United States?

RevenueBase identified 792 environmental compliance software companies 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?

Sphera, headquartered in Chicago, tops this list with the largest team on record.

Which city has the most environmental compliance software companies?

Houston leads with 38 headquartered companies, followed by New York (13) and Austin (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 7,722 verified decision-maker contacts tracked across these 792 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 2, 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.