Company lists · Data refreshed September 2026

Top 25 Environmental organizations based in Houston, United States

Name: Environmental organizations based in Houston, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 65 companies tracked

RevenueBase identified 65 company matches for environmental organizations associated with Houston, United States as of September 2026 and tracks 925 professional contacts across them, including 381 with verified work emails. Across the United States, Washington is the largest hub for this category (209 companies); Houston has 65.

This list covers company matches for environmental organizations associated with Houston, 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

65Companies

925Contacts tracked

381Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest environmental organizations based in Houston, United States

Ranked by team size

Top 25 of 65 company matches for environmental organizations based in Houston, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	GSI Environmental INC	Exact match	Houston, TX, United StatesHQ recorded Sep 19, 2026	201-500	259 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
2	Perennial Environmental Services	Exact match	Houston, TX, United StatesHQ recorded Sep 19, 2026	51-200	102 contacts →
	Exact match “Perennial Environmental Services, LLC, has been providing technical environmental solutions and management with fresh perspectives and unparalleled efficiency since 2003.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
3	Aarc Environmental	Exact match	Houston, TX, United StatesHQ recorded Sep 19, 2026	51-200	63 contacts →
	Exact match “As a leader in the environmental compliance services industry, AARC does more than just meeting the needs of clients today.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
4	Sage ATC Environmental Consulting	Exact match	Houston, TX, United StatesHQ recorded Sep 19, 2026	201-500	63 contacts →
	Exact match “Sage ATC Environmental Consulting is now Atlas.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
5	Spirit Environmental Montrose Environmental Group	Exact match	Houston, TX, United StatesHQ recorded Sep 19, 2026	51-200	54 contacts →
	Exact match “In July of 2024, Spirit was acquired by Onterris.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
6	Houston Arboretum & Nature Center	Exact match	Houston, TX, United StatesHQ recorded Sep 19, 2026	11-50	46 contacts →
	Exact match “The Houston Arboretum & Nature Center is a non-profit organization with a mission to provide education about the natural environment to people of all ages and to protect and…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
7	UES Professional Solutions 64, LLC	Exact match	Houston, TX, United StatesHQ recorded Sep 19, 2026	11-50	31 contacts →
	Exact match “Environmental Consulting and Engineering InControl Technologies was established in 1997 to provide high-end quality environmental consulting services to owners of commercial and…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
8	Coastal Conservation Association	Exact match	Houston, TX, United StatesHQ recorded Sep 19, 2026	51-200	30 contacts →
	Exact match “CCA was created in 1977, after drastic commercial overfishing along the Texas coast had decimated redfish and speckled trout populations.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
9	AIR Alliance Houston	Exact match	Houston, TX, United StatesHQ recorded Sep 19, 2026	11-50	24 contacts →
	Exact match “Air Alliance Houston is a non-profit advocacy organization working to reduce the public health impacts from air pollution and advance environmental justice.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
10	Trees For Houston	Exact match	Houston, TX, United StatesHQ recorded Sep 19, 2026	1-10	22 contacts →
	Exact match “Established in 1983, Trees For Houston’s efforts initially centered on planting street trees in the heart of Houston, Texas.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
11	ERC Environmental & Construction Services	Exact match	Houston, TX, United StatesHQ recorded Sep 19, 2026	11-50	18 contacts →
	Exact match “ERC is a Professional Services Firm in Environmental Consulting and Construction.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
12	Element Markets	Exact match	Houston, TX, United StatesHQ recorded Sep 19, 2026	51-200	14 contacts →
	Exact match “On June 14, 2022, Element Markets and Bluesource formally merged under a new brand name, Anew™, and introduced “Climate as a Service” – an approach that offers companies and…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
13	Houston Wilderness	Exact match	Houston, TX, United StatesHQ recorded Sep 19, 2026	1-10	14 contacts →
	Exact match “HOUSTON WILDERNESS is a broad-based alliance of business, environmental and government interests that act in concert to protect, preserve and promote the unique biodiversity of…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
14	Terrapass	Exact match	Houston, TX, United StatesHQ recorded Sep 19, 2026	11-50	11 contacts →
	Exact match “Terrapass is a multi-disciplinary team of individuals dedicated to the fight against climate change.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
15	Texas Health And Environment Alliance	Exact match	Houston, TX, United StatesHQ recorded Sep 19, 2026	11-50	11 contacts →
	Exact match “The mission of Texas Health and Environment Alliance (THEA) is to protect water resources, public health, and irreplaceable resources like Galveston Bay’s precious estuary from…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
16	Bayou Preservation	Exact match	Houston, TX, United StatesHQ recorded Sep 19, 2026	1-10	9 contacts →
	Exact match “For over 55 years, we’ve been Houston's longest-running and most trusted environmental conservation nonprofit.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
17	Cypress Environmental Consulting	Exact match	Houston, TX, United StatesHQ recorded Sep 19, 2026	1-10	8 contacts →
	Exact match “Cypress Environmental Consulting LLC (CEC) provides a broad range of environmental services including planning, site assessment, and permitting with a focus on regulatory…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
18	Citizens' Environmental Coalition	Exact match	Houston, TX, United StatesHQ recorded Sep 19, 2026	1-10	7 contacts →
	Exact match “The CEC is an alliance of over 100 nonprofit, governmental, and educational organizations whose work impacts our environment and quality of life in the Houston-Galveston area.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
19	Coalition For Environment, Equity And Resilience	Exact match	Houston, TX, United StatesHQ recorded Sep 19, 2026	1-10	7 contacts →
	Exact match “The Coalition for Environment, Equity & Resilience (CEER) is a coalition made up of 27 nonprofit member organizations that came together after Hurricane Harvey to advance policy…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
20	Corrigan Consulting INC	Exact match	Houston, TX, United StatesHQ recorded Sep 19, 2026	11-50	7 contacts →
	Exact match “Since 1986, CCI has been providing specialized services in hazardous waste compliance, permitting, site investigations, and closures; underground storage tank removals and…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
21	Spatial Analytics And Research Consulting	Exact match	Houston, TX, United StatesHQ recorded Sep 19, 2026	1-10	6 contacts →
	Exact match “Spatial Analytics and Research Consulting is a small environmental consulting partnership (founded 2022) specializing in GIS, data analysis, and research.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
22	Sesco Environmental	Exact match	Houston, TX, United StatesHQ recorded Sep 19, 2026	1-10	6 contacts →
	Exact match “Sustainable Environmental Solutions Company, SESCO, is based in Houston, Texas and is considered an innovator in the environmental solutions industry.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
23	Beam Earth	Exact match	Houston, TX, United StatesHQ recorded Sep 19, 2026	11-50	5 contacts →
	Exact match “A clean technology-centric ecosystem, Beam Earth provides funding for environmentally-aligned businesses and services across the investment themes of clean energy, sustainability…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
24	The Jacob And Terese Hershey Foundation	Exact match	Houston, TX, United StatesHQ recorded Sep 19, 2026	1-10	5 contacts →
	Exact match “The Jacob and Terese Hershey Foundation envisions a world where people and nature live in harmony and good health.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
25	Reces Environmental Consulting	Exact match	Houston, TX, United StatesHQ recorded Sep 19, 2026	11-50	4 contacts →
	Exact match “RECES, LLC is an environmental consulting firm specializing in air, water, and wastewater permitting and regulatory compliance for clients throughout the United States.” Recorded in the RevenueBase company graph · Sep 19, 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 organizations”. 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 65 environmental organizations based in Houston, United States

See the full list, filter by size, metro and specialty, and access 381 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Environmental organizations based in Houston, United States at a glance

As of Sep 19, 2026

41.2%Verified-email coverage

14.2Average contacts per company

1-10Median size (employees)

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

Email recency for this list is measured across the whole United States list rather than for Houston, so it is reported there. Company counts and contact totals on this page are exact for Houston, over 65 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 Houston, United States whose business descriptions match “environmental organizations” 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 381 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.

Environmental organizations 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 organizations”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many environmental organizations are there based in Houston, United States?

RevenueBase identified 65 company matches for environmental organizations associated with Houston, 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?

GSI Environmental INC 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 organizations?

Washington leads the United States with 209 company records, followed by New York (204) and Los Angeles (133). Houston has 65.

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 381 professional contacts with verified work emails tracked across these 65 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.

Ready to reach these companies? Verified emails and direct dials for all 65 environmental organizations based in Houston, United States. Start with a free account, no credit card.

Download this list →

Related lists

Environmental organizations by geography

Browse the directory

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.