Company lists · Data refreshed October 2026

Top 25 Outsourced water treatment services worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Oct 28, 2026 13,321 companies tracked

RevenueBase identified 13,321 company matches for outsourced water treatment services worldwide as of October 2026 and tracks 292,987 professional contacts across them, including 75,605 with verified work emails. The United States is the largest market and Pune the largest hub.

This list covers company matches for outsourced water treatment services 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 October 28, 2026. Country and city lists for outsourced water treatment services 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 Oct 28, 2026 How this list was built

13,321Companies

292,987Contacts tracked

75,605Verified emails

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The 25 largest outsourced water treatment services worldwide

Ranked by team size

Top 25 of 13,321 company matches for outsourced water treatment services worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 28, 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	Veolia	Exact match	Aubervilliers, FranceHQ recorded Oct 28, 2026	10001+	31,975 contacts →
	Exact match “Veolia, a global leader in environmental services, works every day to build environmental security for the benefit of public health and the competitiveness of industries and…” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
2	SUEZ	Exact match	Paris, FranceHQ recorded Oct 28, 2026	10001+	23,026 contacts →
	Exact match “We provide essential services in the water and waste sectors to preserve resources and improve quality of life wherever we operate.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
3	XYLEM	Exact match	Washington, DC, United StatesHQ recorded Oct 28, 2026	10001+	8,210 contacts →
	Exact match “Xylem is the global leader in advanced technologies, solutions and services that address the world’s biggest water challenges.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
4	Pentair	Exact match	London, United KingdomHQ recorded Oct 28, 2026	5,001-10,000	6,786 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 · Oct 28, 2026 · View company records in RevenueBase
5	Solenis	Exact match	Wilmington, DE, United StatesHQ recorded Oct 28, 2026	10001+	6,565 contacts →
	Exact match “Solenis is a leading global provider of water and hygiene solutions.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
6	ION Exchange India LTD	Exact match	Mumbai, IndiaHQ recorded Oct 28, 2026	1,001-5,000	3,859 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 · Oct 28, 2026 · View company records in RevenueBase
7	SAUR	Exact match	Issy-les-moulineaux, FranceHQ recorded Oct 28, 2026	10001+	3,842 contacts →
	Exact match “As a pure player in water and essential services, Saur works to protect the environment in the heart of the territories it serves.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
8	Anglian Water Services	Exact match	Huntingdon, United KingdomHQ recorded Oct 28, 2026	5,001-10,000	3,662 contacts →
	Exact match “Anglian Water supply water and water recycling services to more than six million domestic and business customers in the east of England and Hartlepool.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
9	VA Tech Wabag LTD	Exact match	Wabag House, IndiaHQ recorded Oct 28, 2026	1,001-5,000	2,412 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 · Oct 28, 2026 · View company records in RevenueBase
10	Manila Water	Exact match	Quezon City, PhilippinesHQ recorded Oct 28, 2026	1,001-5,000	1,631 contacts →
	Exact match “Manila Water Company, Inc.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
11	SEAAL	Exact match	Alger, AlgeriaHQ recorded Oct 28, 2026	5,001-10,000	1,593 contacts →
	Exact match “La Société des Eaux et de l’Assainissement d’Alger (SEAAL), est une Société Publique par actions, détenue à 70% par l’Algérienne des Eaux (ADE) et à 30% par l’Office National de…” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
12	MPW Industrial Services	Exact match	Hebron, OH, PalestineHQ recorded Oct 28, 2026	1,001-5,000	1,518 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 · Oct 28, 2026 · View company records in RevenueBase
13	Aqualia	Exact match	Madrid, SpainHQ recorded Oct 28, 2026	5,001-10,000	1,507 contacts →
	Exact match “Aqualia es la cuarta empresa de gestión del agua de Europa y la novena del Mundo por población servida, según el último ranking de Global Water Intelligence (diciembre de 2024).” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
14	Chemtreat	Exact match	Glen Allen, VA, United StatesHQ recorded Oct 28, 2026	1,001-5,000	1,475 contacts →
	Exact match “At ChemTreat, we understand that water is a vital resource for our planet.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
15	Kurita Group	Exact match	Tokyo, JapanHQ recorded Oct 28, 2026	5,001-10,000	1,433 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 · Oct 28, 2026 · View company records in RevenueBase
16	Volvo Eicher Commerical Vehical Limited	Exact match	Dhar, IndiaHQ recorded Oct 28, 2026	n/a	1,155 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 · Oct 28, 2026 · View company records in RevenueBase
17	Inframark	Exact match	Horsham, PA, United StatesHQ recorded Oct 28, 2026	1,001-5,000	1,053 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 · Oct 28, 2026 · View company records in RevenueBase
18	Aquatech	Exact match	Canonsburg, PA, United StatesHQ recorded Oct 28, 2026	501-1,000	968 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 · Oct 28, 2026 · View company records in RevenueBase
19	MWH Treatment	Exact match	Stockport, United KingdomHQ recorded Oct 28, 2026	1,001-5,000	930 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 · Oct 28, 2026 · View company records in RevenueBase
20	Chem-Aqua, INC	Exact match	Wilmington, DE, United StatesHQ recorded Oct 28, 2026	10001+	901 contacts →
	Exact match “Chem-Aqua is a unique combination of knowledge, experience and stability.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
21	Gradiant	Exact match	Woburn, MA, United StatesHQ recorded Oct 28, 2026	1,001-5,000	874 contacts →
	Exact match “Gradiant is a Different Kind of Water Company.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
22	OVIVO	Exact match	Montreal, QC, CanadaHQ recorded Oct 28, 2026	501-1,000	839 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 · Oct 28, 2026 · View company records in RevenueBase
23	Evides Waterbedrijf	Exact match	Rotterdam, NetherlandsHQ recorded Oct 28, 2026	501-1,000	817 contacts →
	Exact match “Duurzaam, innovatief en in verbinding met de omgeving; zo werkt Evides Waterbedrijf.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
24	DE Watergroep	Exact match	Brussel, BelgiumHQ recorded Oct 28, 2026	1,001-5,000	750 contacts →
	Exact match “De Watergroep is het grootste drinkwaterbedrijf in Vlaanderen.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
25	Trojan Technologies	Exact match	London, ON, CanadaHQ recorded Oct 28, 2026	501-1,000	737 contacts →
	Exact match “Our Vision To continuously advance water treatment, ensuring everyone has access to clean water, globally.” Recorded in the RevenueBase company graph · Oct 28, 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 “outsourced water treatment services”. 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 13,321 outsourced water treatment services worldwide

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Outsourced water treatment services worldwide at a glance

As of Oct 28, 2026

25.8%Verified-email coverage

22.0Average contacts per company

11-50Median size (employees)

1.0%Largest-city concentration · Pune

Oct 28, 2026Page data refreshed

Companies by employee count

1-10

5,555

11-50

4,900

51-200

1,867

201-500

530

501-1,000

178

1,001-5,000

122

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 outsourced water treatment services are linked below.
What qualifies: Company records worldwide whose business descriptions match “outsourced water treatment services” 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 75,605 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 October 28, 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.

Outsourced water treatment services by location

57 lists · largest first

Every Outsourced water treatment services 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 “outsourced water treatment services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many outsourced water treatment services are there worldwide?

RevenueBase identified 13,321 company matches for outsourced water treatment services worldwide as of October 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?

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

Which country has the most outsourced water treatment services?

The United States leads with 2,254 companies, followed by India (1,578) and Brazil (724). Every outsourced water treatment services list by country and city is linked on this page.

Which city has the most outsourced water treatment services?

Pune leads with 136 company records, followed by Chennai (114) and Ahmedabad (110).

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 75,605 professional contacts with verified work emails tracked across these 13,321 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 October 28, 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.