Company lists · Data refreshed September 2026

Top 25 Environmental software companies based in the United States

Name: Environmental 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 607 companies tracked

RevenueBase identified 607 environmental software companies headquartered in the United States as of September 2026 and tracks 21,327 professional contacts across them, including 7,885 with verified work emails and 8,060 with mobile numbers. Houston is the largest hub.

This list covers environmental 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

607Companies

21,327Contacts tracked

7,885Verified emails

8,060Mobile numbers

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The 25 largest environmental software companies based in the United States

Ranked by team size

Top 25 of 607 environmental 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 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	Swca Environmental Consultants	Partial evidence	Phoenix, AZ, United States	1,001-5,000	1,618 contacts →
	Partial evidence “Founded on a commitment to sound science and creative solutions, SWCA is a leader in environmental and management consulting services.” Source: RevenueBase Database · checked Sep 2, 2026
2	Montrose Environmental Group	Partial evidence	Little Rock, AR, United States	1,001-5,000	1,516 contacts →
	Partial evidence “Onterris (formerly Montrose Environmental Group) was one of the first to see environmental responsibility as not just an imperative but as a strategic asset.” Source: RevenueBase Database · checked Sep 2, 2026
3	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
4	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
5	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
6	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
7	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
8	IES LTD	Partial evidence	Santa Clara, CA, United States	201-500	378 contacts →
	Partial evidence “IES is an innovative company at the forefront of the development and application of powerful software simulation tools and consulting services for architects, engineers and others…” Source: RevenueBase Database · checked Sep 2, 2026
9	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
10	GSI Environmental INC	Partial evidence	Fayetteville, NY, United States	201-500	253 contacts →
	Partial evidence “GSI Environmental, Inc.(GSI), is an environmental engineering and science consulting firm committed to measuring, analyzing, and solving complex environmental problems around the…” Source: RevenueBase Database · checked Sep 2, 2026
11	OTT Hydromet	Indirect evidence	Sterling, VA, United States	201-500	240 contacts →
	Indirect evidence “OTT HydroMet works to deliver customer outcomes by providing decision makers with vital insights they trust.” Source: RevenueBase Database · checked Sep 2, 2026
12	Environmental Works, INC	Partial evidence	Broomfield, CO, United States	201-500	240 contacts →
	Partial evidence “Environmental Works, Inc.(EWI) offers truly comprehensive environmental solutions for a variety of industries, businesses, and municipalities.” Source: RevenueBase Database · checked Sep 2, 2026
13	ARQ	Partial evidence	Greenwood Village, CO, United States	201-500	233 contacts →
	Partial evidence “Arq is a diversified, environmental technology company with products that enable a cleaner and safer planet while actively reducing our environmental impact.” Source: RevenueBase Database · checked Sep 2, 2026
14	Plateau GRP	Indirect evidence	Huntsville, AL, United States	51-200	191 contacts →
	Indirect evidence “Plateau Grp provides innovative and agile IT solutions to customer challenges.” Source: RevenueBase Database · checked Sep 2, 2026
15	VMC Group	Partial evidence	Bloomingdale, NJ, United States	51-200	185 contacts →
	Partial evidence “We design & build solutions that allow customers to better manage the negative environmental effects of air, noise, seismic, vibration, & shock.” 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	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
18	Quest Resource Management Group, A Qrhc Company Nasdaq Qrhc	Partial evidence	The Colony, TX, United States	51-200	149 contacts →
	Partial evidence “Quest Resource Management Group, a subsidiary of Quest Resource Holding Corporation (Nasdaq: QRHC), is a full-service environmental consulting and management company headquartered…” Source: RevenueBase Database · checked Sep 2, 2026
19	ISB Global	Partial evidence	Dover, DE, United States	51-200	117 contacts →
	Partial evidence “ISB Global develops and implements software, Waste & Recycling One (WR1), that integrates, automates, and simplifies to drive greater operational efficiency and profitability for…” Source: RevenueBase Database · checked Sep 2, 2026
20	Woods Hole Group, INC	Partial evidence	Bourne, MA, United States	51-200	105 contacts →
	Partial evidence “Woods Hole Group brings over 35 years of experience, committed to exceeding client objectives while safeguarding the environmental health of our planet.” Source: RevenueBase Database · checked Sep 2, 2026
21	Perennial Environmental Services	Partial evidence	Houston, TX, United States	51-200	100 contacts →
	Partial evidence “Perennial Environmental Services, LLC, has been providing technical environmental solutions and management with fresh perspectives and unparalleled efficiency since 2003.” Source: RevenueBase Database · checked Sep 2, 2026
22	Field Environmental Instruments	Indirect evidence	Signal Hill, CA, United States	51-200	96 contacts →
	Indirect evidence “What is the FEI Advantage?” Source: RevenueBase Database · checked Sep 2, 2026
23	Locus Technologies	Strong evidence	Mountain View, CA, United States	51-200	94 contacts →
	Strong evidence “Locus Technologies is the only scientist-driven software company at the nexus of analytical and field data management, Environmental, Health, and Safety (EHS) compliance, and…” Source: RevenueBase Database · checked Sep 2, 2026
24	Geotech Environmental Equipment, INC	Indirect evidence	Fort Myers, FL, United States	51-200	83 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 2, 2026
25	Encamp	Partial evidence	Indianapolis, IN, United States	51-200	81 contacts →
	Partial evidence “Encamp is an enterprise technology company on a mission to create a world in which what’s good for business can be good for the environment.” 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 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 software companies.
Partial evidence: Its own public description names part of environmental 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 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 607 environmental software companies based in the United States

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Environmental software companies based in the United States at a glance

As of Sep 2, 2026

37.0%Verified-email coverage

37.8%Mobile-number coverage

35.1Average contacts per company

1-10Median size (employees)

4.0%Largest-city concentration · Houston

Sep 2, 2026Page data refreshed

Companies by employee count

1-10

304

11-50

212

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 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 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 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 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, 7,885 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.

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 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 software companies are there based in the United States?

RevenueBase identified 607 environmental 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?

Swca Environmental Consultants, headquartered in Phoenix, tops this list with the largest team on record.

Which city has the most environmental software companies?

Houston leads with 24 headquartered companies, followed by New York (12) and Seattle (8).

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 7,885 verified decision-maker contacts tracked across these 607 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.