Company lists · Data refreshed September 2026

Top 25 Water desalination engineering firms worldwide

Name: Water desalination engineering firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 3,934 companies tracked

RevenueBase identified 3,934 water desalination engineering firms worldwide as of September 2026 and tracks 58,217 professional contacts across them, including 12,175 with verified work emails and 0 with mobile numbers. India is the largest market and Pune the largest hub.

This list covers water desalination engineering firms 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 19, 2026. Country and city lists for water desalination engineering firms 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 19, 2026 86% judged on-target in blind review

3,934Companies

58,217Contacts tracked

12,175Verified emails

0Mobile numbers

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The 25 largest water desalination engineering firms worldwide

Ranked by team size

Top 25 of 3,934 water desalination engineering firms worldwide, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to water desalination engineering firms: 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	VA Tech Wabag LTD	Partial evidence	Wabag House, IndiaHQ checked Sep 19, 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 19, 2026
2	Volvo Eicher Commerical Vehical Limited	Partial evidence	Dhar, IndiaHQ checked Sep 19, 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 19, 2026
3	Sepcoiii Electric Power Construction Co., LTD	Indirect evidence	Dubai, United Arab EmiratesHQ checked Sep 19, 2026	10001+	1,090 contacts →
	Indirect evidence “Electrical Power Construction Co, Ltd.” Source: RevenueBase Database · checked Sep 19, 2026
4	Aquatech	Strong evidence	Canonsburg, PA, United StatesHQ checked Sep 19, 2026	501-1,000	903 contacts →
	Strong 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 19, 2026
5	Gradiant	Partial evidence	Woburn, MA, United StatesHQ checked Sep 19, 2026	1,001-5,000	813 contacts →
	Partial evidence “Gradiant is a Different Kind of Water Company.” Source: RevenueBase Database · checked Sep 19, 2026
6	Trojan Technologies	Partial evidence	London, ON, CanadaHQ checked Sep 19, 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 19, 2026
7	Nijhuis Saur Industries	Partial evidence	Doetinchem, NetherlandsHQ checked Sep 19, 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 19, 2026
8	Westech Engineering	Strong evidence	Salt Lake City, UT, United StatesHQ checked Sep 19, 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 19, 2026
9	Rochem Separation Systems India Pvt. LTD	Partial evidence	Mumbai, IndiaHQ checked Sep 19, 2026	1,001-5,000	536 contacts →
	Partial evidence “We as, Rochem Separation Systems offer 100% water reuse solutions to treat industrial wastewater since 1992.” Source: RevenueBase Database · checked Sep 19, 2026
10	Culligan Italiana S.P.A	Indirect evidence	Bologna, ItalyHQ checked Sep 19, 2026	201-500	489 contacts →
	Indirect evidence “Culligan Italiana è in grado di offrire la soluzione ideale per ogni tipologia di trattamento acqua: piccoli impianti ad uso domestico, erogatori d'acqua per uffici e ristoranti…” Source: RevenueBase Database · checked Sep 19, 2026
11	GS Inima Brasil	Indirect evidence	Sao Paulo, BrazilHQ checked Sep 19, 2026	1,001-5,000	439 contacts →
	Indirect evidence “A GS Inima Brasil é uma das maiores e mais respeitadas companhias privadas de saneamento do país, oferecendo soluções inovadoras e integradas.” Source: RevenueBase Database · checked Sep 19, 2026
12	Grupo EP	Indirect evidence	Guarulhos, BrazilHQ checked Sep 19, 2026	501-1,000	434 contacts →
	Indirect evidence “Identificamos e solucionamos problemas relacionados ao tratamento de água e efluentes, reúso, dessalinização e análises ambientais para indústrias, consultorias ambientais e…” Source: RevenueBase Database · checked Sep 19, 2026
13	Waterleau	Partial evidence	Wespelaar, FranceHQ checked Sep 19, 2026	201-500	411 contacts →
	Partial evidence “Waterleau is your partner in sustainable water stewardship.” Source: RevenueBase Database · checked Sep 19, 2026
14	Kinetico Incorporated	Partial evidence	Newbury, OH, United KingdomHQ checked Sep 19, 2026	201-500	374 contacts →
	Partial evidence “Founded in 1970, Kinetico pioneered the development of non-electric, fully automatic water treatment systems.” Source: RevenueBase Database · checked Sep 19, 2026
15	GS Inima Environment	Partial evidence	Madrid, SpainHQ checked Sep 19, 2026	1,001-5,000	373 contacts →
	Partial evidence “Positioned as one of the companies with the largest number of plants in terms of concessions, GS Inima is a world benchmark in the water sector acting in all phases of the…” Source: RevenueBase Database · checked Sep 19, 2026
16	Fisia Italimpianti	Partial evidence	Genova, ItalyHQ checked Sep 19, 2026	51-200	362 contacts →
	Partial evidence “Fisia Italimpianti S.p.A, part of Webuild Group (the new group born in 2020 from Salini Impregilo), is a worldwide leader in the sustainable design and execution of water…” Source: RevenueBase Database · checked Sep 19, 2026
17	L&t	Strong evidence	Chennai, IndiaHQ checked Sep 19, 2026	5,001-10,000	350 contacts →
	Strong evidence “L&T Construction's Water & Effluent Treatment business vertical provides state-of-the-art design, detailed engineering, procurement, project management, project execution…” Source: RevenueBase Database · checked Sep 19, 2026
18	Vasu Chemicals LLP	Partial evidence	Mumbai, IndiaHQ checked Sep 19, 2026	501-1,000	330 contacts →
	Partial evidence “Vasu Chemicals LLP is India's leading industrial water treatment solutions provider.” Source: RevenueBase Database · checked Sep 19, 2026
19	Ticsa Grupo EPM	Indirect evidence	Tlacoquemécatl, MexicoHQ checked Sep 19, 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 19, 2026
20	Meco Mechanical Equipment Company, INC	Partial evidence	Mandeville, LA, JamaicaHQ checked Sep 19, 2026	201-500	290 contacts →
	Partial 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 19, 2026
21	WTE Infra Projects Pvt. LTD	Partial evidence	Pune, IndiaHQ checked Sep 19, 2026	501-1,000	287 contacts →
	Partial evidence “WTE is a globally recognised manufacturer & exporter of innovative Water & Wastewater Treatment Plants.” Source: RevenueBase Database · checked Sep 19, 2026
22	Culligan By Waterco	Partial evidence	Lombard, IL, United StatesHQ checked Sep 19, 2026	501-1,000	265 contacts →
	Partial evidence “Culligan has over 80 years of experience in the design and distribution of water treatment systems for residential, commercial and industrial applications.” Source: RevenueBase Database · checked Sep 19, 2026
23	HUBER	Indirect evidence	Berching, United Arab EmiratesHQ checked Sep 19, 2026	1,001-5,000	254 contacts →
	Indirect evidence “HUBER is a globally operating company with over employees, of which around work at the headquarters in Berching (Germany).” Source: RevenueBase Database · checked Sep 19, 2026
24	Micron	Partial evidence	Mouscron, BelgiumHQ checked Sep 19, 2026	n/a	246 contacts →
	Partial evidence “Micron, part of the Pollet Water Group (PWG), offers domestic and industrial water treatment solutions throughout Europe.” Source: RevenueBase Database · checked Sep 19, 2026
25	Huber Technology US	Indirect evidence	Denver, NC, United StatesHQ checked Sep 19, 2026	201-500	243 contacts →
	Indirect evidence “HUBER Technology, LLC, the U.S.” Source: RevenueBase Database · checked Sep 19, 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: water desalination engineering firms. 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 water desalination engineering firms.
Partial evidence: Its own public description names part of water desalination engineering firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name water desalination engineering firms. 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 3,934 water desalination engineering firms worldwide

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Water desalination engineering firms worldwide at a glance

As of Sep 19, 2026

20.9%Verified-email coverage

14.8Average contacts per company

11-50Median size (employees)

1.9%Largest-city concentration · Pune

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

1,537

11-50

1,534

51-200

588

201-500

158

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 water desalination engineering firms, 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: 25 countries, largest first: India, the United States, Italy, Spain, Brazil, Türkiye, Mexico, Germany, the United Arab Emirates, the United Kingdom and 15 more. Country and city lists for water desalination engineering firms are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “water desalination engineering firms”. 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 water desalination engineering firms), 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 water desalination engineering firms, 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, 12,175 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 19, 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.

Water desalination engineering firms by location

28 lists · largest first

Every Water desalination engineering firms 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 water desalination engineering firms, 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 water desalination engineering firms are there worldwide?

RevenueBase identified 3,934 water desalination engineering firms 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?

VA Tech Wabag LTD, headquartered in Worldwide, tops this list with the largest team on record.

Which country has the most water desalination engineering firms?

India leads with 866 companies, followed by the United States (647) and Italy (237). Every water desalination engineering firms list by country and city is linked on this page.

Which city has the most water desalination engineering firms?

Pune leads with 73 headquartered companies, followed by Ahmedabad (65) and Chennai (59).

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 12,175 verified decision-maker contacts tracked across these 3,934 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 19, 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.