Company lists · Data refreshed September 2026

Industrial water treatment: the worldwide list

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

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 10,734 companies across 41 countries

RevenueBase identified 10,734 industrial water treatment across the 41 countries with a published list, as of September 2026, and tracks 215,056 professional contacts across them, including 60,855 with verified work emails and 0 with mobile numbers. The United States is the largest market and Pune the largest hub.

This is the worldwide list of industrial water treatment: the 41 country lists RevenueBase publishes for the category, summed and ranked as one. The company count is that sum, not a census of every company on earth; a country with no published list is not counted. 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.

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

10,734Companies

215,056Contacts tracked

60,855Verified emails

0Mobile numbers

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The 25 largest industrial water treatment across the 41 countries with a published list

Ranked by team size

Top 25 of 10,734 industrial water treatment across the 41 countries with a published list, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to industrial water 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	Nalco Water, An Ecolab Company	Strong evidence	Naperville, IL, United StatesHQ checked Sep 17, 2026	10001+	11,500 contacts →
	Strong evidence “A global leader in water and process management solutions, Nalco Water, an Ecolab company, works with customers across a wide range of industries to help meet their specific…” Source: RevenueBase Database · checked Sep 17, 2026
2	XYLEM	Partial evidence	Washington, DC, United StatesHQ checked Sep 17, 2026	10001+	9,320 contacts →
	Partial evidence “Xylem is the global leader in advanced technologies, solutions and services that address the world’s biggest water challenges.” Source: RevenueBase Database · checked Sep 17, 2026
3	Pentair	Partial evidence	London, United KingdomHQ checked Sep 17, 2026	5,001-10,000	6,636 contacts →
	Partial evidence “At Pentair, we help the world sustainably move, improve, and enjoy water, life’s most essential resource.” Source: RevenueBase Database · checked Sep 17, 2026
4	Solenis	Partial evidence	Wilmington, DE, United StatesHQ checked Sep 17, 2026	10001+	6,128 contacts →
	Partial evidence “Solenis is a leading global provider of water and hygiene solutions.” Source: RevenueBase Database · checked Sep 17, 2026
5	Pall Corporation	Indirect evidence	Port Washington, NY, United StatesHQ checked Sep 17, 2026	5,001-10,000	4,495 contacts →
	Indirect evidence “Our global associates are unified by a singular drive: to take on our customers’ biggest challenges.” Source: RevenueBase Database · checked Sep 17, 2026
6	ION Exchange India LTD	Strong evidence	Mumbai, IndiaHQ checked Sep 17, 2026	1,001-5,000	3,810 contacts →
	Strong 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
7	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
8	VA Tech Wabag LTD	Partial evidence	Wabag House, IndiaHQ checked Sep 17, 2026	1,001-5,000	2,375 contacts →
	Partial evidence “WABAG, a global leader in the water industry, is backed by rich experience spanning over 100 years.” Source: RevenueBase Database · checked Sep 17, 2026
9	NCH	Partial evidence	Wilmington, DE, United StatesHQ checked Sep 17, 2026	10001+	2,361 contacts →
	Partial evidence “Cleaning water, conserving energy and delivering maintenance solutions since 1919.” Source: RevenueBase Database · checked Sep 17, 2026
10	Culligan International	Partial evidence	Rosemont, IL, United StatesHQ checked Sep 17, 2026	10001+	1,830 contacts →
	Partial evidence “There’s nothing more fundamental to life on Earth than water.” Source: RevenueBase Database · checked Sep 17, 2026
11	Praj Industries	Partial evidence	Pune, IndiaHQ checked Sep 17, 2026	1,001-5,000	1,786 contacts →
	Partial evidence “Praj is a leading process solutions company with expertise in integrated offerings for bio-energy, high purity water solutions and engineering led businesses namely zero liquid…” Source: RevenueBase Database · checked Sep 17, 2026
12	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
13	MPW Industrial Services	Strong evidence	Hebron, OH, PalestineHQ checked Sep 17, 2026	1,001-5,000	1,485 contacts →
	Strong 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
14	Chemtreat	Partial evidence	Glen Allen, VA, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,404 contacts →
	Partial evidence “At ChemTreat, we understand that water is a vital resource for our planet.” Source: RevenueBase Database · checked Sep 17, 2026
15	Safetykleen	Indirect evidence	Brentford, United KingdomHQ checked Sep 17, 2026	1,001-5,000	1,247 contacts →
	Indirect evidence “We are the World’s leading provider of chemical cleaning & environmental solutions offering a wide range of solutions to address the needs of our diverse customer base.” Source: RevenueBase Database · checked Sep 17, 2026
16	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
17	Aquatech	Partial evidence	Canonsburg, PA, United StatesHQ checked Sep 17, 2026	501-1,000	903 contacts →
	Partial evidence “Aquatech enables the world's most recognized companies to solve complex challenges in water reuse, desalination, minimal and zero liquid discharge, and critical minerals…” Source: RevenueBase Database · checked Sep 17, 2026
18	Dubois Chemicals, INC	Indirect evidence	Sharonville, OH, United StatesHQ checked Sep 17, 2026	1,001-5,000	884 contacts →
	Indirect evidence “DuBois has been serving customers since 1920.” Source: RevenueBase Database · checked Sep 17, 2026
19	Chem-Aqua, INC	Indirect evidence	Wilmington, DE, United StatesHQ checked Sep 17, 2026	10001+	864 contacts →
	Indirect evidence “Chem-Aqua is a unique combination of knowledge, experience and stability.” Source: RevenueBase Database · checked Sep 17, 2026
20	OVIVO	Strong evidence	Montreal, QC, CanadaHQ checked Sep 17, 2026	501-1,000	829 contacts →
	Strong 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
21	Gradiant	Partial evidence	Woburn, MA, United StatesHQ checked Sep 17, 2026	1,001-5,000	813 contacts →
	Partial evidence “Gradiant is a Different Kind of Water Company.” Source: RevenueBase Database · checked Sep 17, 2026
22	IXOM	Indirect evidence	Melbourne, AustraliaHQ checked Sep 17, 2026	1,001-5,000	759 contacts →
	Indirect evidence “IXOM is one of the largest chemical and ingredient manufacturers and distributors in Australia and New Zealand, with a world-class heritage that spans over 100 years.” Source: RevenueBase Database · checked Sep 17, 2026
23	Evides Waterbedrijf	Indirect evidence	Rotterdam, NetherlandsHQ checked Sep 17, 2026	501-1,000	753 contacts →
	Indirect evidence “Duurzaam, innovatief en in verbinding met de omgeving; zo werkt Evides Waterbedrijf.” Source: RevenueBase Database · checked Sep 17, 2026
24	Nederman	Partial evidence	Helsingborg, SwedenHQ checked Sep 17, 2026	1,001-5,000	748 contacts →
	Partial evidence “The Clean Air Company Nederman is one of the world's leading companies supplying products and services in the environmental technology sector focusing on industrial air filtration.” Source: RevenueBase Database · checked Sep 17, 2026
25	Trojan Technologies	Strong evidence	London, ON, CanadaHQ checked Sep 17, 2026	501-1,000	716 contacts →
	Strong evidence “Our Vision To continuously advance water treatment, ensuring everyone has access to clean water, globally.” 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 water 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 water treatment.
Partial evidence: Its own public description names part of industrial water treatment, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name industrial water 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 10,734 industrial water treatment across the 41 countries with a published list

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Industrial water treatment worldwide at a glance

As of Sep 17, 2026

28.3%Verified-email coverage

20.0Average contacts per company

11-50Median size (employees)

1.3%Largest-city concentration · Pune

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

4,387

11-50

4,064

51-200

1,561

201-500

371

501-1,000

113

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 water 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: This worldwide list is the sum of the 41 country lists RevenueBase publishes for industrial water treatment, largest first: the United States, India, Brazil, Italy, the United Kingdom, Germany, Spain, France, Canada, Türkiye and 31 more. Its company and contact totals add up those lists, so they understate the true worldwide figures: a country with no published list is not counted. The ranked table is exact across the countries covered, the largest companies of every country list ranked together with duplicates removed.
What qualifies: Companies worldwide whose own description of what they do matches “industrial water 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 water 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 water 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, 60,855 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: The country lists behind this page 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 water treatment by location

47 lists · largest first

Every Industrial water treatment list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date; the worldwide figures above are the sum of the 41 country lists.

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 water 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 water treatment are there worldwide?

RevenueBase identified 10,734 industrial water treatment across the 41 countries with a published list, as of September 2026, matched on each company's own description of what it does rather than its industry code. The figure is the sum of those country lists, not a census of every company worldwide.

What is the largest company on this list?

Nalco Water, An Ecolab Company, headquartered in Naperville, tops this list with the largest team on record.

Which country has the most industrial water treatment?

The United States leads with 2,395 companies, followed by India (1,608) and Brazil (678). Every country with a published industrial water treatment list is linked on this page.

Which city has the most industrial water treatment?

Pune leads with 137 headquartered companies, followed by Ahmedabad (124) and Chennai (118).

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 60,855 verified decision-maker contacts tracked across these 10,734 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. The country lists behind this page were pulled from the company graph 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.