Company lists · Data refreshed November 2026

Top 25 Oil and gas water treatment builders worldwide

Name: Oil and gas water treatment builders worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 4, 2026 8,385 companies tracked

RevenueBase identified 8,385 company matches for oil and gas water treatment builders worldwide as of November 2026 and tracks 127,522 professional contacts across them, including 27,366 with verified work emails. The United States is the largest market and Pune the largest hub.

This list covers company matches for oil and gas water treatment builders 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 4, 2026. Country and city lists for oil and gas water treatment builders 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 4, 2026 How this list was built

8,385Companies

127,522Contacts tracked

27,366Verified emails

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The 25 largest oil and gas water treatment builders worldwide

Ranked by team size

Top 25 of 8,385 company matches for oil and gas water treatment builders worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 4, 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 4, 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 4, 2026 · View company records in RevenueBase
2	VA Tech Wabag LTD	Exact match	Wabag House, IndiaHQ recorded Nov 4, 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 4, 2026 · View company records in RevenueBase
3	Select Water Solutions	Exact match	Gainesville, TX, United StatesHQ recorded Nov 4, 2026	1,001-5,000	1,561 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
4	Kurita Group	Exact match	Tokyo, JapanHQ recorded Nov 4, 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 4, 2026 · View company records in RevenueBase
5	Volvo Eicher Commerical Vehical Limited	Exact match	Dhar, IndiaHQ recorded Nov 4, 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 4, 2026 · View company records in RevenueBase
6	Imco Engineering & Construction CO W.L.L	Exact match	KuwaitHQ recorded Nov 4, 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 4, 2026 · View company records in RevenueBase
7	Aquatech	Exact match	Canonsburg, PA, United StatesHQ recorded Nov 4, 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 4, 2026 · View company records in RevenueBase
8	Celeros Flow Technology	Exact match	Charlotte, NC, United StatesHQ recorded Nov 4, 2026	1,001-5,000	972 contacts →
	Exact match “Your "FULL-LIFECYCLE" Partner for Sustainable Flow Technology Solutions.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
9	Chem-Aqua, INC	Exact match	Wilmington, DE, United StatesHQ recorded Nov 4, 2026	10001+	922 contacts →
	Exact match “Chem-Aqua is a unique combination of knowledge, experience and stability.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
10	Gradiant	Exact match	Woburn, MA, United StatesHQ recorded Nov 4, 2026	1,001-5,000	898 contacts →
	Exact match “Gradiant is a Different Kind of Water Company.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
11	OVIVO	Exact match	Montreal, QC, CanadaHQ recorded Nov 4, 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 4, 2026 · View company records in RevenueBase
12	Trojan Technologies	Exact match	London, ON, CanadaHQ recorded Nov 4, 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 4, 2026 · View company records in RevenueBase
13	EMEC	Exact match	Cairo, EgyptHQ recorded Nov 4, 2026	501-1,000	686 contacts →
	Exact match “EMEC is a regional oil and gas services company built on more than four decades of operational experience, regional insight, and deep technical expertise.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
14	IDE Technologies	Exact match	Kadima, IsraelHQ recorded Nov 4, 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 4, 2026 · View company records in RevenueBase
15	Operational Energy Group India LTD	Exact match	Chennai, IndiaHQ recorded Nov 4, 2026	1,001-5,000	633 contacts →
	Exact match “OEG is a global Leading technology company in Power, Process and Water Industry providing one stop turnkey solutions including basic & detailed engineering, Planning, project…” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
16	BWT France	Exact match	Saint - Denis, FranceHQ recorded Nov 4, 2026	501-1,000	594 contacts →
	Exact match “BWT France is one of the largest subsidiaries of Austrian group Best Water Technology ( BWT), the European leader in water treatment.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
17	Westech Engineering	Exact match	Salt Lake City, United StatesHQ recorded Nov 4, 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 4, 2026 · View company records in RevenueBase
18	Cetco Energy Services	Exact match	Houston, United StatesHQ recorded Nov 4, 2026	501-1,000	565 contacts →
	Exact match “CETCO Energy Services (CETCO) specializes in treating complex fluids for offshore oil and gas operators.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
19	Petronash	Exact match	Jabal Ali, United Arab EmiratesHQ recorded Nov 4, 2026	501-1,000	492 contacts →
	Exact match “Incorporated in the year Petronash is a global leader in the manufacture of engineered packaged solutions for the Oil & Gas Industry.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
20	3m	Exact match	Velika Gorica, CroatiaHQ recorded Nov 4, 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 4, 2026 · View company records in RevenueBase
21	Grupo EP	Exact match	Guarulhos, BrazilHQ recorded Nov 4, 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 4, 2026 · View company records in RevenueBase
22	HUBER	Exact match	Berching, United Arab EmiratesHQ recorded Nov 4, 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 4, 2026 · View company records in RevenueBase
23	Hyflux LTD	Exact match	SingaporeHQ recorded Nov 4, 2026	1,001-5,000	434 contacts →
	Exact match “Hyflux is a global leader in environmental solutions, focusing on the areas of water and energy.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
24	Waterleau	Exact match	Wespelaar, FranceHQ recorded Nov 4, 2026	201-500	424 contacts →
	Exact match “Waterleau is your partner in sustainable water stewardship.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
25	UCC Environmental	Exact match	Waukegan, AB, United StatesHQ recorded Nov 4, 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 4, 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 “oil and gas water treatment builders”. 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 8,385 oil and gas water treatment builders worldwide

See the full list, filter by size, metro and specialty, and access 27,366 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Oil and gas water treatment builders worldwide at a glance

As of Nov 4, 2026

21.5%Verified-email coverage

15.2Average contacts per company

11-50Median size (employees)

1.1%Largest-city concentration · Pune

Nov 4, 2026Page data refreshed

Companies by employee count

1-10

3,093

11-50

3,325

51-200

1,292

201-500

358

501-1,000

101

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 oil and gas water treatment builders are linked below.
What qualifies: Company records worldwide whose business descriptions match “oil and gas water treatment builders” 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 27,366 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 4, 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.

Oil and gas water treatment builders by location

41 lists · largest first

Every Oil and gas water treatment builders 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 “oil and gas water treatment builders”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many oil and gas water treatment builders are there worldwide?

RevenueBase identified 8,385 company matches for oil and gas water treatment builders 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 oil and gas water treatment builders?

The United States leads with 1,349 companies, followed by India (1,020) and Italy (341). Every oil and gas water treatment builders list by country and city is linked on this page.

Which city has the most oil and gas water treatment builders?

Pune leads with 95 company records, followed by Chennai (82) and Ahmedabad (76).

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 27,366 professional contacts with verified work emails tracked across these 8,385 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 4, 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.