Company lists · Data refreshed September 2026

Top 25 Environmental impact mitigation companies based in the United States

RevenueBase identified 747 company matches for environmental impact mitigation companies associated with the United States as of September 2026 and tracks 18,557 professional contacts across them, including 10,499 with verified work emails. Houston is the largest hub.

This list covers company matches for environmental impact mitigation companies associated with the 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 19, 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 19, 2026 How this list was built
747Companies
18,557Contacts tracked
10,499Verified emails
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The 25 largest environmental impact mitigation companies based in the United States

Ranked by team size
Top 25 of 747 company matches for environmental impact mitigation companies based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 19, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchPhoenix, AZ, United StatesHQ recorded Sep 19, 20261,001-5,0001,629 contacts →

Exact match

“Founded on a commitment to sound science and creative solutions, SWCA is a leader in environmental and management consulting services.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
2Exact matchLittle Rock, AR, United StatesHQ recorded Sep 19, 20261,001-5,0001,529 contacts →

Exact match

“Onterris (formerly Montrose Environmental Group) was one of the first to see environmental responsibility as not just an imperative but as a strategic asset.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
3Exact matchSeattle, WA, United StatesHQ recorded Sep 19, 2026501-1,000880 contacts →

Exact match

“At Parametrix, we help our clients imagine what's possible.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
4Exact matchSan Francisco, CA, United StatesHQ recorded Sep 19, 2026501-1,000732 contacts →

Exact match

“ESA is a 100% employee-owned environmental consulting firm.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
5Exact matchBellaire, TX, United StatesHQ recorded Sep 19, 2026501-1,000677 contacts →

Exact match

“As the nation’s largest nature-based solutions company, RES (Resource Environmental Solutions) is restoring a resilient earth for a modern world, project by project.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
6Exact matchBurlington, MA, United StatesHQ recorded Sep 19, 2026501-1,000535 contacts →

Exact match

“For 35 years we have been helping investors, lenders, owners, developers, contractors, and property managers reduce risk and optimize their built facilities, infrastructure and…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
7Exact matchVentura, CA, United StatesHQ recorded Sep 19, 2026501-1,000479 contacts →

Exact match

“Rincon Consultants is a multi-disciplinary environmental sciences, planning, and engineering consulting firm that provides quality professional services to government and industry.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
8Exact matchWall Township, NJ, United StatesHQ recorded Sep 19, 2026201-500447 contacts →

Exact match

“We are Groundwater & Environmental Services, Inc, better known as GES.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
9Exact matchWalnut Creek, CA, United StatesHQ recorded Sep 19, 2026201-500433 contacts →

Exact match

“AEI Consultants provides building, environmental, land and sustainability assessment and consulting services throughout North America.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
10Exact matchReston, VA, United StatesHQ recorded Sep 19, 2026501-1,000430 contacts →

Exact match

“HydroGeoLogic, Inc.(HGL) is an employee-owned company with over 36 years of experience developing innovative, effective, and sustainable engineering and remediation solutions to…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
11Exact matchGainesville, FL, United StatesHQ recorded Sep 19, 2026201-500305 contacts →

Exact match

“Environmental Consulting & Technology, Inc.(ECT) is a multi-disciplinary environmental and sustainability consulting firm delivering strategy, permitting, design, and management…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
12Exact matchHouston, TX, United StatesHQ recorded Sep 19, 2026201-500259 contacts →

Exact match

“GSI Environmental, Inc.(GSI), is an environmental engineering and science consulting firm committed to measuring, analyzing, and solving complex environmental problems around the…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
13Exact matchGreenwood Village, CO, United StatesHQ recorded Sep 19, 2026201-500234 contacts →

Exact match

“Arq is a diversified, environmental technology company with products that enable a cleaner and safer planet while actively reducing our environmental impact.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
14Exact matchPittsfield, ME, United StatesHQ recorded Sep 19, 2026201-500218 contacts →

Exact match

“At Kleinschmidt, we work primarily with energy companies and government agencies in North America to protect and enhance the environment without compromising performance.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
15Exact matchHouston, TX, United StatesHQ recorded Sep 19, 2026201-500200 contacts →

Exact match

“Anew Climate is a global leader of diverse climate solutions, bringing innovative products and services to the public and private sectors to help reduce or offset their carbon…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
16Exact matchBedford, NH, United StatesHQ recorded Sep 19, 2026201-500189 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
17Exact matchBloomingdale, NJ, United StatesHQ recorded Sep 19, 202651-200187 contacts →

Exact match

“We design & build solutions that allow customers to better manage the negative environmental effects of air, noise, seismic, vibration, & shock.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
18Exact matchSan Rafael, CA, United StatesHQ recorded Sep 19, 202651-200183 contacts →

Exact match

“WRA is an environmental consultancy that’s making a net positive impact.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
19Exact matchOakland, CA, United StatesHQ recorded Sep 19, 2026201-500166 contacts →

Exact match

“Terraphase offers cost-effective solutions to complex environmental and engineering challenges.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
20Exact matchRocklin, CA, United StatesHQ recorded Sep 19, 202651-200166 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
21Exact matchIndianapolis, IN, United StatesHQ recorded Sep 19, 202651-200152 contacts →

Exact match

“Founded in 1988, KERAMIDA is a multidisciplinary Sustainability, EHS & Engineering consulting firm grounded in evidence-based research and development.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
22Exact matchThe Colony, TX, United StatesHQ recorded Sep 19, 202651-200147 contacts →

Exact match

“Quest Resource Management Group, a subsidiary of Quest Resource Holding Corporation (Nasdaq: QRHC), is a full-service environmental consulting and management company headquartered…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
23Exact matchDallas, TX, United StatesHQ recorded Sep 19, 202651-200136 contacts →

Exact match

“OUR MISSION is to combine sustainable environmental solutions with forward-thinking, cost-effective, innovative, and value-added technologies that balance our clients’ economic…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
24Exact matchBirmingham Office, AL, United StatesHQ recorded Sep 19, 202651-200118 contacts →

Exact match

“PPM Consultants is an environmental and engineering consulting firm providing services to industrial, commercial, and governmental clients.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
25Exact matchSeattle, WA, United StatesHQ recorded Sep 19, 202651-200110 contacts →

Exact match

“Cascadia Consulting Group is a majority women-owned consulting firm specializing in environmental and sustainability solutions.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase

Showing 25 of 747 environmental impact mitigation companies based in the United States

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Environmental impact mitigation companies based in the United States at a glance

As of Sep 19, 2026
56.6%Verified-email coverage
24.8Average contacts per company
1-10Median size (employees)
2.4%Largest-city concentration · Houston
Sep 19, 2026Page data refreshed

Companies by employee count

1-10
403
11-50
241
51-200
76
201-500
14
501-1,000
8
1,001-5,000
5

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 747 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 the United States whose business descriptions match “environmental impact mitigation companies” 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 10,499 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 19, 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.

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 impact mitigation companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many environmental impact mitigation companies are there based in the United States?

RevenueBase identified 747 company matches for environmental impact mitigation companies associated with the 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?

Swca Environmental Consultants tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most environmental impact mitigation companies?

Houston leads with 18 company records, followed by New York (16) and Austin (10).

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 10,499 professional contacts with verified work emails tracked across these 747 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 19, 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.