Company lists · Data refreshed September 2026

Top 25 Process water treatment companies worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 14,293 companies tracked

RevenueBase identified 14,293 process water treatment companies worldwide as of September 2026 and tracks 210,255 professional contacts across them, including 51,058 with verified work emails. The United States is the largest market and Pune the largest hub.

This list covers process water 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 20, 2026. Country and city lists for process water 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 20, 2026 86% judged on-target in blind review

14,293Companies

210,255Contacts tracked

51,058Verified emails

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The 25 largest process water treatment companies worldwide

Ranked by team size

Top 25 of 14,293 process water treatment companies worldwide, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to process water 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	Pentair	Partial evidence	London, United KingdomHQ checked Sep 20, 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 20, 2026
2	Solenis	Partial evidence	Wilmington, DE, United StatesHQ checked Sep 20, 2026	10001+	6,128 contacts →
	Partial evidence “Solenis is a leading global provider of water and hygiene solutions.” Source: RevenueBase Database · checked Sep 20, 2026
3	ION Exchange India LTD	Strong evidence	Mumbai, IndiaHQ checked Sep 20, 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 20, 2026
4	Evoqua Water Technologies	Indirect evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	10001+	2,639 contacts →
	Indirect evidence “Evoqua has now joined Xylem.” Source: RevenueBase Database · checked Sep 20, 2026
5	VA Tech Wabag LTD	Partial evidence	Wabag House, IndiaHQ checked Sep 20, 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 20, 2026
6	Carollo Engineers	Partial evidence	Walnut Creek, CA, United StatesHQ checked Sep 20, 2026	1,001-5,000	1,718 contacts →
	Partial evidence “For more than 90 years, Carollo Engineers has been dedicated exclusively to water and wastewater solutions.” Source: RevenueBase Database · checked Sep 20, 2026
7	Select Water Solutions	Partial evidence	Gainesville, TX, United StatesHQ checked Sep 20, 2026	1,001-5,000	1,605 contacts →
	Partial 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 20, 2026
8	MPW Industrial Services	Partial evidence	Hebron, OH, PalestineHQ checked Sep 20, 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 20, 2026
9	PSA	Indirect evidence	Comuna 1, ArgentinaHQ checked Sep 20, 2026	501-1,000	1,460 contacts →
	Indirect evidence “PSA es una división de Industrias Pugliese s.a.” Source: RevenueBase Database · checked Sep 20, 2026
10	Chemtreat	Partial evidence	Glen Allen, VA, United StatesHQ checked Sep 20, 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 20, 2026
11	Kurita Group	Partial evidence	Tokyo, JapanHQ checked Sep 20, 2026	5,001-10,000	1,360 contacts →
	Partial evidence “For more than 70 years, since its founding in 1949, Kurita Water Industries has been consistently operating in two areas of "water and the environment." Kurita Group provides…” Source: RevenueBase Database · checked Sep 20, 2026
12	Volvo Eicher Commerical Vehical Limited	Strong evidence	Dhar, IndiaHQ checked Sep 20, 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 20, 2026
13	Inframark	Partial evidence	Horsham, PA, United StatesHQ checked Sep 20, 2026	1,001-5,000	973 contacts →
	Partial evidence “As an Azuria owned company, Inframark is a widely recognized leader in Water Infrastructure Operations and Infrastructure Management Services.” Source: RevenueBase Database · checked Sep 20, 2026
14	Aquatech	Partial evidence	Canonsburg, PA, United StatesHQ checked Sep 20, 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 20, 2026
15	MWH Treatment	Strong evidence	Stockport, United KingdomHQ checked Sep 20, 2026	1,001-5,000	879 contacts →
	Strong evidence “MWH Treatment is a leading Design and Build non-infrastructure solution provider in the UK water sector, with a water sector heritage dating back to 1820.” Source: RevenueBase Database · checked Sep 20, 2026
16	Chem-Aqua, INC	Indirect evidence	Wilmington, DE, United StatesHQ checked Sep 20, 2026	10001+	864 contacts →
	Indirect evidence “Chem-Aqua is a unique combination of knowledge, experience and stability.” Source: RevenueBase Database · checked Sep 20, 2026
17	OVIVO	Strong evidence	Montreal, QC, CanadaHQ checked Sep 20, 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 20, 2026
18	Gradiant	Partial evidence	Woburn, MA, United StatesHQ checked Sep 20, 2026	1,001-5,000	813 contacts →
	Partial evidence “Gradiant is a Different Kind of Water Company.” Source: RevenueBase Database · checked Sep 20, 2026
19	Trojan Technologies	Strong evidence	London, ON, CanadaHQ checked Sep 20, 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 20, 2026
20	Grupo Bauminas	Indirect evidence	Cataguazes, BrazilHQ checked Sep 20, 2026	1,001-5,000	650 contacts →
	Indirect evidence “Sobre a BAUMINAS Fundada há mais de 60 anos, a BAUMINAS é uma empresa orgulhosamente nacional, com ampla experiência na fabricação de produtos para o tratamento de águas e tem…” Source: RevenueBase Database · checked Sep 20, 2026
21	Ceco Environmental Corporation	Indirect evidence	Addison, TX, United StatesHQ checked Sep 20, 2026	1,001-5,000	646 contacts →
	Indirect evidence “CECO Environmental is a leading environmentally focused, diversified industrial company whose solutions protect people, the environment, and industrial equipment across the globe…” Source: RevenueBase Database · checked Sep 20, 2026
22	Nijhuis Saur Industries	Partial evidence	Doetinchem, NetherlandsHQ checked Sep 20, 2026	1,001-5,000	609 contacts →
	Partial evidence “Founded in 1904, Nijhuis Saur Industries provides solid and adaptive solutions for sustainable and resilient water use, energy- and resource recovery.” Source: RevenueBase Database · checked Sep 20, 2026
23	Culligan France	Indirect evidence	Versailles, FranceHQ checked Sep 20, 2026	1,001-5,000	607 contacts →
	Indirect evidence “Spécialiste du traitement de l’eau depuis plus de 80 ans, Culligan apporte chaque jour une eau de qualité aux particuliers, aux entreprises et aux collectivités.” Source: RevenueBase Database · checked Sep 20, 2026
24	IDE Technologies	Strong evidence	Kadima, IsraelHQ checked Sep 20, 2026	501-1,000	603 contacts →
	Strong evidence “A world leader in water treatment solutions, IDE specializes in the development, engineering, construction and operation of enhanced desalination and industrial water treatment…” Source: RevenueBase Database · checked Sep 20, 2026
25	Wetico	Strong evidence	Riyadh, Saudi ArabiaHQ checked Sep 20, 2026	501-1,000	599 contacts →
	Strong evidence “Formerly Saudi Berkefeld Filter, a leader in water treatment, WETICO is going through the transition to remain a leader in its field, and to keep on providing its customers with…” Source: RevenueBase Database · checked Sep 20, 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: process water 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 process water treatment companies.
Partial evidence: Its own public description names part of process water treatment companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name process water 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 14,293 process water treatment companies worldwide

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Process water treatment companies worldwide at a glance

As of Sep 20, 2026

24.3%Verified-email coverage

14.7Average contacts per company

11-50Median size (employees)

1.0%Largest-city concentration · Pune

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

5,934

11-50

5,297

51-200

2,070

201-500

555

501-1,000

157

1,001-5,000

107

5,001-10,000

10001+

Email recency is reported on each country list linked below.

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 process water 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: Every country. Country and city lists for process water treatment companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “process water 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 process water 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 process water 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, 51,058 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 20, 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.

Process water treatment companies by location

46 lists · largest first

Every Process water treatment companies 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 process water 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 process water treatment companies are there worldwide?

RevenueBase identified 14,293 process water 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?

Pentair, headquartered in London, tops this list with the largest team on record.

Which country has the most process water treatment companies?

The United States leads with 2,556 companies, followed by India (1,640) and Brazil (662). Every process water treatment companies list by country and city is linked on this page.

Which city has the most process water treatment companies?

Pune leads with 139 headquartered companies, followed by Ahmedabad (130) 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 51,058 verified decision-maker contacts tracked across these 14,293 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 20, 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.