Company lists · Data refreshed November 2026

Top 25 Water treatment plant engineers worldwide

Name: Water treatment plant engineers worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 7,372 companies tracked

RevenueBase identified 7,372 company matches for water treatment plant engineers worldwide as of November 2026 and tracks 111,327 professional contacts across them, including 26,343 with verified work emails. India is the largest market and Pune the largest hub.

This list covers company matches for water treatment plant engineers worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026. Country and city lists for water treatment plant engineers follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built

7,372Companies

111,327Contacts tracked

26,343Verified emails

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The 25 largest water treatment plant engineers worldwide

Ranked by team size

Top 25 of 7,372 company matches for water treatment plant engineers worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	ION Exchange India LTD	Exact match	Mumbai, IndiaHQ recorded Nov 6, 2026	1,001-5,000	4,010 contacts →
	Exact match “At Ion Exchange India, we bring you total environment solutions - water treatment, liquid waste treatment & recycle, air pollution control, solid & hazardous waste management and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2	VA Tech Wabag LTD	Exact match	Wabag House, IndiaHQ recorded Nov 6, 2026	1,001-5,000	2,635 contacts →
	Exact match “WABAG, a global leader in the water industry, is backed by rich experience spanning over 100 years.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3	Brown And Caldwell	Exact match	Walnut Creek, CA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	2,553 contacts →
	Exact match “Headquartered in Walnut Creek, Calif, Brown and Caldwell is an employee-owned firm with 2,100+ professionals serving clients locally and globally from 52 locations.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4	Carollo Engineers	Exact match	Walnut Creek, NV, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,837 contacts →
	Exact match “For more than 90 years, Carollo Engineers has been dedicated exclusively to water and wastewater solutions.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5	Volvo Eicher Commerical Vehical Limited	Exact match	Dhar, IndiaHQ recorded Nov 6, 2026	n/a	1,235 contacts →
	Exact match “Volvo Eicher Commerical Vehical Limited Service Provider of waste water recycling systems, drinking water plant & industrial water treatment in Indore, Madhya Pradesh.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6	Aquatech	Exact match	Canonsburg, PA, United StatesHQ recorded Nov 6, 2026	501-1,000	1,006 contacts →
	Exact match “Aquatech enables the world's most recognized companies to solve complex challenges in water reuse, desalination, minimal and zero liquid discharge, and critical minerals…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7	MWH Treatment	Exact match	Stockport, United KingdomHQ recorded Nov 6, 2026	1,001-5,000	971 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8	Chem-Aqua, INC	Exact match	Wilmington, DE, United StatesHQ recorded Nov 6, 2026	10001+	922 contacts →
	Exact match “Chem-Aqua is a unique combination of knowledge, experience and stability.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	OVIVO	Exact match	Montreal, QC, CanadaHQ recorded Nov 6, 2026	501-1,000	857 contacts →
	Exact match “Ovivo is a powerful global brand, uniting world-renowned trademarks and a highly specialized team of 700 water treatment experts operating across the globe.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10	Trojan Technologies	Exact match	London, ON, CanadaHQ recorded Nov 6, 2026	501-1,000	751 contacts →
	Exact match “Our Vision To continuously advance water treatment, ensuring everyone has access to clean water, globally.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11	Ward And Burke	Exact match	Kilcolgan, TX, IrelandHQ recorded Nov 6, 2026	1,001-5,000	731 contacts →
	Exact match “Since its establishment, Ward & Burke has sought to develop and adopt the ideals and aspirations to civil engineering construction and currently delivers class leading, reliable…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12	IDE Technologies	Exact match	Kadima, IsraelHQ recorded Nov 6, 2026	501-1,000	660 contacts →
	Exact match “A world leader in water treatment solutions, IDE specializes in the development, engineering, construction and operation of enhanced desalination and industrial water treatment…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	Nijhuis Saur Industries	Exact match	Doetinchem, NetherlandsHQ recorded Nov 6, 2026	1,001-5,000	592 contacts →
	Exact match “Founded in 1904, Nijhuis Saur Industries provides solid and adaptive solutions for sustainable and resilient water use, energy- and resource recovery.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14	Westech Engineering	Exact match	Salt Lake City, United StatesHQ recorded Nov 6, 2026	501-1,000	588 contacts →
	Exact match “WesTech Engineering, LLC designs, engineers, and manufactures water and wastewater treatment process equipment for mineral, industrial, and municipal applications worldwide.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15	AGS Water Solutions	Exact match	Oeiras, PortugalHQ recorded Nov 6, 2026	51-200	542 contacts →
	Exact match “AGS – Administração e Gestão de Sistemas de Salubridade, SA focuses on the preservation of the environment, acting throughout the entire water cycle.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	3m	Exact match	Velika Gorica, CroatiaHQ recorded Nov 6, 2026	n/a	477 contacts →
	Exact match “Company for production,trading, dealership and services engineering for pool water, drinking, waste and industry water - desinfection - neutralization - softening - dosing -…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17	GMB	Exact match	Opheusden, NetherlandsHQ recorded Nov 6, 2026	501-1,000	464 contacts →
	Exact match “Al ruim een halve eeuw zetten we ons in voor duurzame oplossingen op het gebied van waterkwaliteit, waterveiligheid, bio-energie en industriële bouw en infra.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	Grupo EP	Exact match	Guarulhos, BrazilHQ recorded Nov 6, 2026	501-1,000	453 contacts →
	Exact match “Identificamos e solucionamos problemas relacionados ao tratamento de água e efluentes, reúso, dessalinização e análises ambientais para indústrias, consultorias ambientais e…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19	HUBER	Exact match	Berching, United Arab EmiratesHQ recorded Nov 6, 2026	1,001-5,000	434 contacts →
	Exact match “HUBER is a globally operating company with over employees, of which around work at the headquarters in Berching (Germany).” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20	Waterleau	Exact match	Wespelaar, FranceHQ recorded Nov 6, 2026	201-500	424 contacts →
	Exact match “Waterleau is your partner in sustainable water stewardship.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21	UCC Environmental	Exact match	Waukegan, AB, United StatesHQ recorded Nov 6, 2026	201-500	407 contacts →
	Exact match “UCC Environmental (UCC) is a global leader in environmental solutions for solids handling, wastewater treatment and pollution control technologies in power generation and other…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22	Proxa Water	Exact match	Woodmead, South AfricaHQ recorded Nov 6, 2026	201-500	389 contacts →
	Exact match “Proxa is a leading water treatment specialist whose integrated services cover the entire water cycle and span numerous global industries, including: mining, food & beverage…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23	Fisia Italimpianti	Exact match	Genoa, ItalyHQ recorded Nov 6, 2026	51-200	386 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24	Enviro Infra Engineers LTD	Exact match	Delhi, IndiaHQ recorded Nov 6, 2026	501-1,000	368 contacts →
	Exact match “Since 2009, Enviro has combined engineering excellence with a commitment to sustainability in water and wastewater solutions across India." Enviro Infra Engineers Limited stands…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25	Parkson Corporation	Exact match	Fort Lauderdale, KS, United StatesHQ recorded Nov 6, 2026	51-200	360 contacts →
	Exact match “Parkson Corporation is a supplier of innovative, cost effective solutions for potable water, process water, and industrial and municipal wastewater treatment.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “water treatment plant engineers”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 7,372 water treatment plant engineers worldwide

See the full list, filter by size, metro and specialty, and access 26,343 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Water treatment plant engineers worldwide at a glance

As of Nov 6, 2026

23.7%Verified-email coverage

15.1Average contacts per company

11-50Median size (employees)

1.4%Largest-city concentration · Pune

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

2,751

11-50

2,908

51-200

1,147

201-500

314

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
Coverage: Every country. Country and city lists for water treatment plant engineers are linked below.
What qualifies: Company records worldwide whose business descriptions match “water treatment plant engineers” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 26,343 professional contacts with verified work emails across the full matched dataset. 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 November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Water treatment plant engineers by location

43 lists · largest first

Every Water treatment plant engineers 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 SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “water treatment plant engineers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many water treatment plant engineers are there worldwide?

RevenueBase identified 7,372 company matches for water treatment plant engineers worldwide as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

ION Exchange India LTD tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most water treatment plant engineers?

India leads with 1,109 companies, followed by the United States (917) and Italy (326). Every water treatment plant engineers list by country and city is linked on this page.

Which city has the most water treatment plant engineers?

Pune leads with 105 company records, followed by Chennai (84) and Tehran (80).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 26,343 professional contacts with verified work emails tracked across these 7,372 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 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 SmartSearch, 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.