Company lists · Data refreshed September 2026

Top 25 Environmental justice consulting firms based in Seattle, United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 70 companies tracked

RevenueBase identified 70 company matches for environmental justice consulting firms associated with Seattle, United States as of September 2026 and tracks 2,625 professional contacts across them, including 1,735 with verified work emails. Across the United States, Seattle is the largest hub for this category.

This list covers company matches for environmental justice consulting firms associated with Seattle, 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 28, 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 28, 2026 How this list was built

70Companies

2,625Contacts tracked

1,735Verified emails

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The 25 largest environmental justice consulting firms based in Seattle, United States

Ranked by team size

Top 25 of 70 company matches for environmental justice consulting firms based in Seattle, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 28, 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	Parametrix	Exact match	Seattle, WA, United StatesHQ recorded Sep 28, 2026	501-1,000	880 contacts →
	Exact match “At Parametrix, we help our clients imagine what's possible.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
2	Anchor QEA	Exact match	Seattle, WA, United StatesHQ recorded Sep 28, 2026	501-1,000	479 contacts →
	Exact match “Headquartered in Seattle, Washington, Anchor QEA is a nationally recognized environmental science and engineering consulting firm specializing in aquatic, shoreline, and water…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
3	PRR	Exact match	Seattle, WA, United StatesHQ recorded Sep 28, 2026	51-200	201 contacts →
	Exact match “Established in 1981, PRR is a mission-driven agency dedicated to creating real and lasting change in the world.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
4	Landau Associates	Exact match	Seattle, WA, United StatesHQ recorded Sep 28, 2026	51-200	184 contacts →
	Exact match “Landau Associates is an employee-owned firm that provides environmental consulting and risk management for clients across many disciplines including air, noise, water, permitting…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
5	Herrera Environmental Consultants	Exact match	Seattle, WA, United StatesHQ recorded Sep 28, 2026	51-200	176 contacts →
	Exact match “Herrera Environmental Consultants is a leading engineering and scientific consulting firm focused on restoration, water, and sustainable development.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
6	Cascadia Consulting Group	Exact match	Seattle, WA, United StatesHQ recorded Sep 28, 2026	51-200	110 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 28, 2026 · View company records in RevenueBase
7	Triangle Associates, INC	Exact match	Seattle, WA, United StatesHQ recorded Sep 28, 2026	11-50	51 contacts →
	Exact match “Triangle was one of the first firms in the nation to offer environmental collaboration and conflict resolution.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
8	Hart Crowser, A Division Of Haley & Aldrich	Exact match	Seattle, WA, United StatesHQ recorded Sep 28, 2026	51-200	49 contacts →
	Exact match “Hart Crowser’s engineers and scientists have the up-to-date knowledge to support practical designs and recommendations.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
9	Floyd Snider	Exact match	Seattle, WA, United StatesHQ recorded Sep 28, 2026	11-50	48 contacts →
	Exact match “Floyd\|Snider is a multi-disciplinary environmental consulting firm providing engineering, strategic project management, and scientific expertise to achieve balanced solutions to…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
10	Pyramid Communications	Exact match	Seattle, WA, United StatesHQ recorded Sep 28, 2026	11-50	44 contacts →
	Exact match “Pyramid Communications is a full-service strategy and creative firm that has been giving voice to good causes for 30 years.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
11	Confluence Environmental Company	Exact match	Seattle, WA, United StatesHQ recorded Sep 28, 2026	11-50	37 contacts →
	Exact match “Confluence specializes in environmental science, project delivery, and regulatory strategy and compliance.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
12	Soundearth Strategies, INC	Exact match	Seattle, WA, United StatesHQ recorded Sep 28, 2026	11-50	33 contacts →
	Exact match “SoundEarth is a 100% employee-owned environmental consulting firm with more than 40 dedicated and talented professionals working together to improve the environment in which we…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
13	NVL Laboratories, INC	Exact match	Seattle, WA, United StatesHQ recorded Sep 28, 2026	11-50	31 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
14	Front And Centered	Exact match	Seattle, WA, United StatesHQ recorded Sep 28, 2026	11-50	23 contacts →
	Exact match “Communities of color, people with lower incomes, and indigenous people are on the frontlines of climate and environmental change.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
15	Cascadia LAW Group Pllc	Exact match	Seattle, WA, United StatesHQ recorded Sep 28, 2026	11-50	18 contacts →
	Exact match “Cascadia Law Group PLLC provides clients with the most effective environmental representation available in our region.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
16	Watershed Science & Engineering	Exact match	Seattle, WA, United StatesHQ recorded Sep 28, 2026	11-50	16 contacts →
	Exact match “At WSE, our focus is on service.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
17	Windward Environmental	Exact match	Seattle, WA, United StatesHQ recorded Sep 28, 2026	11-50	16 contacts →
	Exact match “Windward Environmental specializes in providing solutions for clients needing programmatic, technical, or logistical support for managing environmental concerns.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
18	Raedeke Associates, INC	Exact match	Seattle, WA, United StatesHQ recorded Sep 28, 2026	11-50	14 contacts →
	Exact match “Since 1980, Raedeke (RAD-ĭ-kee) Associates, Inc.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
19	Tree Solutions INC	Exact match	Seattle, United StatesHQ recorded Sep 28, 2026	11-50	13 contacts →
	Exact match “Urban Forestry and Arboriculture Consulting Services Tree Solutions Inc.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
20	Duwamish River Community Coalition	Exact match	Seattle, WA, United StatesHQ recorded Sep 28, 2026	1-10	13 contacts →
	Exact match “DRCC has never delved into the delineation between Superfund site and affected community-in our view, environmental justice concerns inextricably link harmful pollutant practices…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
21	EHS International, Inc., Seattle, WA	Exact match	Seattle, WA, United StatesHQ recorded Sep 28, 2026	11-50	10 contacts →
	Exact match “EHS-International, Inc.(EHSI) is a small business that specializes in providing environmental consulting and industrial hygiene services directed towards environmental assessment…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
22	Ridolfi INC	Exact match	Seattle, WA, United StatesHQ recorded Sep 28, 2026	11-50	10 contacts →
	Exact match “Established in 1990, RIDOLFI is an award-winning, small, certified Women’s Business Enterprise (WBE) that specializes in environmental engineering and scientific consulting.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
23	Ecochem, INC	Exact match	Seattle, WA, United StatesHQ recorded Sep 28, 2026	1-10	10 contacts →
	Exact match “EcoChem is an environmental consulting firm that specializes in providing quality assurance oversight and management of analytical data in support of various environmental…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
24	Clearway Environmental LLC	Exact match	Seattle, WA, United StatesHQ recorded Sep 28, 2026	11-50	8 contacts →
	Exact match “Clearway Environmental provides natural resources analyses, habitat restoration, environmental compliance, and fisheries services for transportation and natural resources projects.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
25	Plauché & Carr LLP	Exact match	Seattle, WA, United StatesHQ recorded Sep 28, 2026	1-10	8 contacts →
	Exact match “Plauché & Carr attorneys serve as advocates and counselors to our clients regarding legal and regulatory issues related to natural resource based activities, primarily in marine…” Recorded in the RevenueBase company graph · Sep 28, 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 justice consulting 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 25 of 70 environmental justice consulting firms based in Seattle, United States

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Environmental justice consulting firms based in Seattle, United States at a glance

As of Sep 28, 2026

66.1%Verified-email coverage

37.5Average contacts per company

1-10Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

501-1,000

Email recency for this list is measured across the whole United States list rather than for Seattle, so it is reported there. Company counts and contact totals on this page are exact for Seattle, over 70 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 Seattle, United States whose business descriptions match “environmental justice consulting 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 1,735 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 28, 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 justice consulting 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 justice consulting firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many environmental justice consulting firms are there based in Seattle, United States?

RevenueBase identified 70 company matches for environmental justice consulting firms associated with Seattle, 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?

Parametrix 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 justice consulting firms?

Seattle leads the United States with 70 company records, followed by Washington (68) and New York (68).

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 1,735 professional contacts with verified work emails tracked across these 70 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 28, 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.