Company lists · Data refreshed November 2026

Top 25 Water treatment engineering companies worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 18,939 companies tracked

RevenueBase identified 18,939 company matches for water treatment engineering companies worldwide as of November 2026 and tracks 283,608 professional contacts across them, including 67,109 with verified work emails. The United States is the largest market and Pune the largest hub.

This list covers company matches for water treatment engineering companies 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 engineering companies 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

18,939Companies

283,608Contacts tracked

67,109Verified emails

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The 25 largest water treatment engineering companies worldwide

Ranked by team size

Top 25 of 18,939 company matches for water treatment engineering companies 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	Pentair	Exact match	London, United KingdomHQ recorded Nov 6, 2026	5,001-10,000	6,972 contacts →
	Exact match “At Pentair, we help the world sustainably move, improve, and enjoy water, life’s most essential resource.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2	Solenis	Exact match	Wilmington, DE, United StatesHQ recorded Nov 6, 2026	10001+	6,789 contacts →
	Exact match “Solenis is a leading global provider of water and hygiene solutions.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3	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
4	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
5	Evoqua Water Technologies	Exact match	Washington, DC, United StatesHQ recorded Nov 6, 2026	10001+	2,605 contacts →
	Exact match “Evoqua has now joined Xylem.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6	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
7	Praj Industries	Exact match	Pune, IndiaHQ recorded Nov 6, 2026	1,001-5,000	1,908 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8	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
9	PSA	Exact match	Comuna 1, ArgentinaHQ recorded Nov 6, 2026	501-1,000	1,602 contacts →
	Exact match “PSA es una división de Industrias Pugliese s.a.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10	MPW Industrial Services	Exact match	Hebron, IN, PalestineHQ recorded Nov 6, 2026	1,001-5,000	1,562 contacts →
	Exact match “As the leading provider of integrated, technology-based industrial cleaning, water purification, facility management, and total waste services in North America, MPW assists in…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11	Chemtreat	Exact match	Glen Allen, IA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,512 contacts →
	Exact match “At ChemTreat, we understand that water is a vital resource for our planet.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12	Kurita Group	Exact match	Tokyo, JapanHQ recorded Nov 6, 2026	5,001-10,000	1,445 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	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
14	Imco Engineering & Construction CO W.L.L	Exact match	KuwaitHQ recorded Nov 6, 2026	1,001-5,000	1,155 contacts →
	Exact match “Established in 1970, IMCO started as a pioneer in the Industrial Electrical and Instrumentation Fields in Kuwait.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15	Inframark	Exact match	Horsham, PA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,107 contacts →
	Exact match “As an Azuria owned company, Inframark is a widely recognized leader in Water Infrastructure Operations and Infrastructure Management Services.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	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
17	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
18	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
19	Gradiant	Exact match	Woburn, MA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	898 contacts →
	Exact match “Gradiant is a Different Kind of Water Company.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20	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
21	Cetrel	Exact match	Camaçari, BrazilHQ recorded Nov 6, 2026	1,001-5,000	788 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22	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
23	ACO Group	Exact match	Büdelsdorf, GermanyHQ recorded Nov 6, 2026	5,001-10,000	751 contacts →
	Exact match “ACO is a Water-Tech company that protects water.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24	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
25	Grupo Bauminas	Exact match	Cataguazes, BrazilHQ recorded Nov 6, 2026	1,001-5,000	703 contacts →
	Exact match “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…” 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 engineering companies”. 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 18,939 water treatment engineering companies worldwide

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Water treatment engineering companies worldwide at a glance

As of Nov 6, 2026

23.7%Verified-email coverage

15.0Average contacts per company

11-50Median size (employees)

0.9%Largest-city concentration · Pune

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

7,776

11-50

6,987

51-200

2,688

201-500

738

501-1,000

233

1,001-5,000

137

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 engineering companies are linked below.
What qualifies: Company records worldwide whose business descriptions match “water treatment engineering companies” 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 67,109 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 engineering companies by location

76 lists · largest first

Every Water treatment engineering 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 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 engineering companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many water treatment engineering companies are there worldwide?

RevenueBase identified 18,939 company matches for water treatment engineering companies 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?

Pentair tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most water treatment engineering companies?

The United States leads with 2,917 companies, followed by India (2,198) and Brazil (884). Every water treatment engineering companies list by country and city is linked on this page.

Which city has the most water treatment engineering companies?

Pune leads with 176 company records, followed by Chennai (163) and Ahmedabad (140).

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 67,109 professional contacts with verified work emails tracked across these 18,939 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.