Company lists · Data refreshed September 2026

Top 25 Industrial wastewater treatment worldwide

Name: Industrial wastewater treatment worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 4,091 companies tracked

RevenueBase identified 4,091 industrial wastewater treatment worldwide as of September 2026 and tracks 88,603 professional contacts across them, including 21,808 with verified work emails and 0 with mobile numbers. India is the largest market and Pune the largest hub.

This list covers industrial wastewater treatment 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 industrial wastewater treatment 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

4,091Companies

88,603Contacts tracked

21,808Verified emails

0Mobile numbers

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The 25 largest industrial wastewater treatment worldwide

Ranked by team size

Top 25 of 4,091 industrial wastewater treatment worldwide, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to industrial wastewater treatment: 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	Clean Harbors	Partial evidence	Norwell, MA, United StatesHQ checked Sep 17, 2026	10001+	8,924 contacts →
	Partial evidence “Clean Harbors is North America’s leading provider of environmental and industrial services.” Source: RevenueBase Database · checked Sep 17, 2026
2	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
3	Veolia Australia & NEW Zealand	Strong evidence	Pyrmont, AustraliaHQ checked Sep 17, 2026	5,001-10,000	2,476 contacts →
	Strong evidence “Veolia Australia and New Zealand is a leading provider of environmental solutions across water and wastewater services, industrial cleaning, waste management and resource recovery…” Source: RevenueBase Database · checked Sep 17, 2026
4	MPW Industrial Services	Partial evidence	Hebron, OH, PalestineHQ checked Sep 17, 2026	1,001-5,000	1,485 contacts →
	Partial evidence “As the leading provider of integrated, technology-based industrial cleaning, water purification, facility management, and total waste services in North America, MPW assists in…” Source: RevenueBase Database · checked Sep 17, 2026
5	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
6	Volvo Eicher Commerical Vehical Limited	Strong evidence	Dhar, IndiaHQ checked Sep 17, 2026	n/a	1,196 contacts →
	Strong 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	Crystal Clean	Indirect evidence	Hoffman Estates, IL, United StatesHQ checked Sep 17, 2026	1,001-5,000	899 contacts →
	Indirect evidence “Crystal Clean is a national leader in the environmental services market, providing the smart alternative.” Source: RevenueBase Database · checked Sep 17, 2026
8	OVIVO	Partial evidence	Montreal, QC, CanadaHQ checked Sep 17, 2026	501-1,000	829 contacts →
	Partial evidence “Ovivo is a powerful global brand, uniting world-renowned trademarks and a highly specialized team of 700 water treatment experts operating across the globe.” Source: RevenueBase Database · checked Sep 17, 2026
9	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
10	Promotora Ambiental S.A.B. DE C.V	Partial evidence	Santa María, MexicoHQ checked Sep 17, 2026	5,001-10,000	677 contacts →
	Partial evidence “En Promotora Ambiental nos hemos especializado en brindar soluciones ambientales a los sectores público y privado, en los campos de comercio e industria.” Source: RevenueBase Database · checked Sep 17, 2026
11	Cetrel	Partial evidence	Camaçari, BrazilHQ checked Sep 17, 2026	1,001-5,000	611 contacts →
	Partial evidence “Cetrel was formely created as an environmental protection company 40 years ago, to treat efluents and solid residues of more than 70 industries of the Camaçari Industrial Complex…” Source: RevenueBase Database · checked Sep 17, 2026
12	Westech Engineering	Strong evidence	Salt Lake City, UT, United StatesHQ checked Sep 17, 2026	501-1,000	554 contacts →
	Strong evidence “WesTech Engineering, LLC designs, engineers, and manufactures water and wastewater treatment process equipment for mineral, industrial, and municipal applications worldwide.” Source: RevenueBase Database · checked Sep 17, 2026
13	Rochem Separation Systems India Pvt. LTD	Strong evidence	Mumbai, IndiaHQ checked Sep 17, 2026	1,001-5,000	536 contacts →
	Strong evidence “We as, Rochem Separation Systems offer 100% water reuse solutions to treat industrial wastewater since 1992.” Source: RevenueBase Database · checked Sep 17, 2026
14	RSE	Partial evidence	Inverness Highlands, United KingdomHQ checked Sep 17, 2026	501-1,000	498 contacts →
	Partial evidence “RSE is a trusted clean water technology company, developing market leading products and solutions for purifying drinking water, recycling wastewater and cleaning water in…” Source: RevenueBase Database · checked Sep 17, 2026
15	Evergreen North America Industrial Services	Partial evidence	La Porte, TX, United StatesHQ checked Sep 17, 2026	1,001-5,000	468 contacts →
	Partial evidence “Evergreen North America Industrial Services offers a comprehensive range of Industrial Services for oil refineries, petrochemical plants, power generation plants, manufacturing…” Source: RevenueBase Database · checked Sep 17, 2026
16	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
17	Waterleau	Indirect evidence	Wespelaar, FranceHQ checked Sep 17, 2026	201-500	411 contacts →
	Indirect evidence “Waterleau is your partner in sustainable water stewardship.” Source: RevenueBase Database · checked Sep 17, 2026
18	UCC Environmental	Strong evidence	Waukegan, IL, United StatesHQ checked Sep 17, 2026	201-500	389 contacts →
	Strong evidence “UCC Environmental (UCC) is a global leader in environmental solutions for solids handling, wastewater treatment and pollution control technologies in power generation and other…” Source: RevenueBase Database · checked Sep 17, 2026
19	Gratt Indústria E Tecnologia Ambiental Ltda	Partial evidence	Capinzal, BrazilHQ checked Sep 17, 2026	1,001-5,000	376 contacts →
	Partial evidence “Desenvolvemos soluções industriais completas para separação de materiais, recuperação de matérias-primas, processamento de subprodutos e tratamento ambiental, apoiando empresas na…” Source: RevenueBase Database · checked Sep 17, 2026
20	Proxa Water	Strong evidence	Woodmead, South AfricaHQ checked Sep 17, 2026	201-500	358 contacts →
	Strong evidence “Proxa is a leading water treatment specialist whose integrated services cover the entire water cycle and span numerous global industries, including: mining, food & beverage…” Source: RevenueBase Database · checked Sep 17, 2026
21	Vasu Chemicals LLP	Strong evidence	Mumbai, IndiaHQ checked Sep 17, 2026	501-1,000	330 contacts →
	Strong evidence “Vasu Chemicals LLP is India's leading industrial water treatment solutions provider.” Source: RevenueBase Database · checked Sep 17, 2026
22	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
23	Parkson Corporation	Strong evidence	Fort Lauderdale, FL, United StatesHQ checked Sep 17, 2026	51-200	317 contacts →
	Strong evidence “Parkson Corporation is a supplier of innovative, cost effective solutions for potable water, process water, and industrial and municipal wastewater treatment.” Source: RevenueBase Database · checked Sep 17, 2026
24	Enfil S A	Indirect evidence	São Paulo, BrazilHQ checked Sep 17, 2026	1,001-5,000	307 contacts →
	Indirect evidence “Com mais de 30 anos de atuação no mercado brasileiro, a Enfil é uma empresa referência em soluções ambientais para tratamento de água, efluentes e controle de emissões…” Source: RevenueBase Database · checked Sep 17, 2026
25	Ticsa Grupo EPM	Indirect evidence	Tlacoquemécatl, MexicoHQ checked Sep 17, 2026	501-1,000	305 contacts →
	Indirect evidence “En TICSA ofrecemos conocimiento y experiencia para crear soluciones innovadoras para el diseño, construcción, operación y mantenimiento de plantas de tratamiento de agua que den…” 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: industrial wastewater treatment. 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 industrial wastewater treatment.
Partial evidence: Its own public description names part of industrial wastewater treatment, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name industrial wastewater treatment. 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 4,091 industrial wastewater treatment worldwide

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Industrial wastewater treatment worldwide at a glance

As of Sep 17, 2026

24.6%Verified-email coverage

21.7Average contacts per company

11-50Median size (employees)

2.0%Largest-city concentration · Pune

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

1,420

11-50

1,672

51-200

690

201-500

176

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 industrial wastewater treatment, 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: 27 countries, largest first: India, the United States, Brazil, Italy, Germany, Türkiye, Spain, the United Kingdom, Canada, Mexico and 17 more. Country and city lists for industrial wastewater treatment are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “industrial wastewater treatment”. 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 industrial wastewater treatment), 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 industrial wastewater treatment, 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, 21,808 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.

Industrial wastewater treatment by location

30 lists · largest first

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

Countries

Cities

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 industrial wastewater treatment, 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 industrial wastewater treatment are there worldwide?

RevenueBase identified 4,091 industrial wastewater treatment 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?

Clean Harbors, headquartered in Norwell, tops this list with the largest team on record.

Which country has the most industrial wastewater treatment?

India leads with 826 companies, followed by the United States (803) and Brazil (331). Every industrial wastewater treatment list by country and city is linked on this page.

Which city has the most industrial wastewater treatment?

Pune leads with 80 headquartered companies, followed by Ahmedabad (70) and Chennai (51).

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 21,808 verified decision-maker contacts tracked across these 4,091 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.