Company lists · Data refreshed September 2026

Top 25 Oil and gas wastewater treatment companies worldwide

Name: Oil and gas wastewater treatment companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 1,587 companies tracked

RevenueBase identified 1,587 oil and gas wastewater treatment companies worldwide as of September 2026 and tracks 38,206 professional contacts across them, including 8,983 with verified work emails and 0 with mobile numbers. The United States is the largest market and Houston the largest hub.

This list covers oil and gas wastewater treatment companies worldwide, 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 17, 2026. Country and city lists for oil and gas wastewater treatment companies follow the table.

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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 17, 2026 86% judged on-target in blind review

1,587Companies

38,206Contacts tracked

8,983Verified emails

0Mobile numbers

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The 25 largest oil and gas wastewater treatment companies worldwide

Ranked by team size

Top 25 of 1,587 oil and gas wastewater treatment companies worldwide, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to oil and gas wastewater treatment 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	ION Exchange India LTD	Partial evidence	Mumbai, IndiaHQ checked Sep 17, 2026	1,001-5,000	3,810 contacts →
	Partial evidence “At Ion Exchange India, we bring you total environment solutions - water treatment, liquid waste treatment & recycle, air pollution control, solid & hazardous waste management and…” Source: RevenueBase Database · checked Sep 17, 2026
2	Select Water Solutions	Strong evidence	Gainesville, TX, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,605 contacts →
	Strong evidence “Select is a leader in water management and chemical technology to our customers in the oil and gas industry, as well as in other industrial applications.” Source: RevenueBase Database · checked Sep 17, 2026
3	Chemtreat	Indirect evidence	Glen Allen, VA, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,404 contacts →
	Indirect evidence “At ChemTreat, we understand that water is a vital resource for our planet.” Source: RevenueBase Database · checked Sep 17, 2026
4	PMI	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 17, 2026	n/a	1,308 contacts →
	Indirect evidence “Training and Development Solutions” Source: RevenueBase Database · checked Sep 17, 2026
5	Secure	Indirect evidence	Calgary, AB, CanadaHQ checked Sep 17, 2026	1,001-5,000	1,261 contacts →
	Indirect evidence “SECURE is a leading waste management and energy infrastructure business headquartered in Calgary, Alberta.” Source: RevenueBase Database · checked Sep 17, 2026
6	Volvo Eicher Commerical Vehical Limited	Partial evidence	Dhar, IndiaHQ checked Sep 17, 2026	n/a	1,196 contacts →
	Partial evidence “Volvo Eicher Commerical Vehical Limited Service Provider of waste water recycling systems, drinking water plant & industrial water treatment in Indore, Madhya Pradesh.” Source: RevenueBase Database · checked Sep 17, 2026
7	Gradiant	Indirect evidence	Woburn, MA, United StatesHQ checked Sep 17, 2026	1,001-5,000	813 contacts →
	Indirect evidence “Gradiant is a Different Kind of Water Company.” Source: RevenueBase Database · checked Sep 17, 2026
8	Trojan Technologies	Partial evidence	London, ON, CanadaHQ checked Sep 17, 2026	501-1,000	716 contacts →
	Partial evidence “Our Vision To continuously advance water treatment, ensuring everyone has access to clean water, globally.” Source: RevenueBase Database · checked Sep 17, 2026
9	Cetco Energy Services	Strong evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	501-1,000	499 contacts →
	Strong evidence “CETCO Energy Services (CETCO) specializes in treating complex fluids for offshore oil and gas operators.” Source: RevenueBase Database · checked Sep 17, 2026
10	TWMA	Indirect evidence	Dyce, United KingdomHQ checked Sep 17, 2026	501-1,000	456 contacts →
	Indirect evidence “TWMA is the world’s drilling waste specialist; pioneering the best solutions & technology to turn waste into value.” Source: RevenueBase Database · checked Sep 17, 2026
11	Liquid Environmental Solutions	Partial evidence	Irving, TX, United StatesHQ checked Sep 17, 2026	501-1,000	427 contacts →
	Partial evidence “Liquid Environmental Solutions - the largest, exclusively non-hazardous US wastewater collection and disposal company, is known for innovation and leadership in protecting…” Source: RevenueBase Database · checked Sep 17, 2026
12	Apollo	Indirect evidence	Toluca, MexicoHQ checked Sep 17, 2026	501-1,000	363 contacts →
	Indirect evidence “Contamos con un amplio portafolio de tratamientos químicos integrales para el mercado energético cuyo enfoque en los requerimientos de calidad, ambientales y de seguridad forma…” Source: RevenueBase Database · checked Sep 17, 2026
13	Enviro Infra Engineers LTD	Partial evidence	Delhi, IndiaHQ checked Sep 17, 2026	501-1,000	323 contacts →
	Partial evidence “Since 2009, Enviro has combined engineering excellence with a commitment to sustainability in water and wastewater solutions across India." Enviro Infra Engineers Limited stands…” Source: RevenueBase Database · checked Sep 17, 2026
14	Infiltrator Water Technologies Decentralized Wastewater Treatment Solutions	Strong evidence	Old Saybrook, CT, United StatesHQ checked Sep 17, 2026	501-1,000	295 contacts →
	Strong evidence “Protecting the environment with innovative wastewater treatment solutions for over 35 years, Infiltrator is the leading manufacturer of onsite wastewater treatment products in…” Source: RevenueBase Database · checked Sep 17, 2026
15	Meco Mechanical Equipment Company, INC	Indirect evidence	Mandeville, LA, JamaicaHQ checked Sep 17, 2026	201-500	290 contacts →
	Indirect evidence “For over 96 years, MECO has been a world leader in designing and constructing engineered solutions for water purification.” Source: RevenueBase Database · checked Sep 17, 2026
16	WTE Infra Projects Pvt. LTD	Strong evidence	Pune, IndiaHQ checked Sep 17, 2026	501-1,000	287 contacts →
	Strong evidence “WTE is a globally recognised manufacturer & exporter of innovative Water & Wastewater Treatment Plants.” Source: RevenueBase Database · checked Sep 17, 2026
17	Grupo Fast	Indirect evidence	Capinzal, BrazilHQ checked Sep 17, 2026	201-500	275 contacts →
	Indirect evidence “Somos uma das principais indústrias do segmento metalmecânico, com sede em Santa Catarina e atuação internacional.” Source: RevenueBase Database · checked Sep 17, 2026
18	Ironclad Environmental Solutions	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	201-500	263 contacts →
	Indirect evidence “Ironclad Environmental Solutions is the leading provider of custom waste management solutions, supported by the largest national fleet of innovative, top-quality specialty assets.” Source: RevenueBase Database · checked Sep 17, 2026
19	Valicor	Indirect evidence	Monroe, OH, United StatesHQ checked Sep 17, 2026	201-500	254 contacts →
	Indirect evidence “Valicor is a trusted partner for sustainable waste management solutions.” Source: RevenueBase Database · checked Sep 17, 2026
20	Aegis Chemical Solutions	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	201-500	230 contacts →
	Partial evidence “Aegis Chemical Solutions provides high-quality chemical treatment and technical services for oilfield applications.” Source: RevenueBase Database · checked Sep 17, 2026
21	Stage 3 Separation	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	201-500	205 contacts →
	Indirect evidence “Stage 3 Separation is North America’s leading service provider for fluid conservation, solids control and waste mitigation.” Source: RevenueBase Database · checked Sep 17, 2026
22	BOS Solutions	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	201-500	196 contacts →
	Partial evidence “BOS Solutions (BOS) is a full service provider of solutions for drilling fluids treatment and recovery.” Source: RevenueBase Database · checked Sep 17, 2026
23	Fluence Corporation	Partial evidence	Minneapolis, MN, United StatesHQ checked Sep 17, 2026	201-500	195 contacts →
	Partial evidence “Formed in 2017 following the consolidation of independent water treatment solution providers Emefcy and RWL Water, Fluence Corporation was established with the vision of becoming…” Source: RevenueBase Database · checked Sep 17, 2026
24	Newterra	Strong evidence	Coraopolis, PA, United StatesHQ checked Sep 17, 2026	201-500	185 contacts →
	Strong evidence “Newterra designs, engineers, manufactures, and services environmental, water and wastewater treatment solutions that assure great performance, superb reliability, and the highest…” Source: RevenueBase Database · checked Sep 17, 2026
25	Albriggs Environmental Solutions	Indirect evidence	São Paulo, BrazilHQ checked Sep 17, 2026	501-1,000	178 contacts →
	Indirect evidence “Juntas, aLBriggs e aQuamec disponibilizam soluções completas e inovadoras para descontaminação e tratamento de águas e solos, através da oferta de serviços e equipamentos de alta…” Source: RevenueBase Database · checked Sep 17, 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: oil and gas wastewater treatment 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 oil and gas wastewater treatment companies.
Partial evidence: Its own public description names part of oil and gas wastewater treatment companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name oil and gas wastewater treatment 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 1,587 oil and gas wastewater treatment companies worldwide

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Oil and gas wastewater treatment companies worldwide at a glance

As of Sep 17, 2026

23.5%Verified-email coverage

24.1Average contacts per company

11-50Median size (employees)

3.2%Largest-city concentration · Houston

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

560

11-50

649

51-200

256

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 oil and gas wastewater treatment 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.
Coverage: 14 countries, largest first: the United States, India, Brazil, Canada, Italy, the United Kingdom, Germany, Spain, Australia, Mexico and 4 more. Country and city lists for oil and gas wastewater treatment companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “oil and gas wastewater treatment 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 oil and gas wastewater treatment 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 oil and gas wastewater treatment companies, and records with no verified work email.
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, 8,983 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 17, 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.

Oil and gas wastewater treatment companies by location

14 lists · largest first

Every Oil and gas wastewater treatment companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

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 oil and gas wastewater treatment 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 oil and gas wastewater treatment companies are there worldwide?

RevenueBase identified 1,587 oil and gas wastewater treatment companies worldwide 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?

ION Exchange India LTD, headquartered in Mumbai, tops this list with the largest team on record.

Which country has the most oil and gas wastewater treatment companies?

The United States leads with 547 companies, followed by India (283) and Brazil (116). Every oil and gas wastewater treatment companies list by country and city is linked on this page.

Which city has the most oil and gas wastewater treatment companies?

Houston leads with 51 headquartered companies, followed by Calgary (31) and Pune (26).

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 8,983 verified decision-maker contacts tracked across these 1,587 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 17, 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.