Company lists · Data refreshed November 2026

Top 25 Wastewater treatment operators worldwide

RevenueBase identified 4,005 company matches for wastewater treatment operators worldwide as of November 2026 and tracks 76,321 professional contacts across them, including 20,849 with verified work emails. The United States is the largest market and Pune the largest hub.

This list covers company matches for wastewater treatment operators 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 wastewater treatment operators 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
4,005Companies
76,321Contacts tracked
20,849Verified emails
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The 25 largest wastewater treatment operators worldwide

Ranked by team size
Top 25 of 4,005 company matches for wastewater treatment operators 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchMumbai, IndiaHQ recorded Nov 6, 20261,001-5,0004,010 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
2Exact matchRio De Janeiro, BrazilHQ recorded Nov 6, 20261,001-5,0002,659 contacts →

Exact match

“Constituída oficialmente em 1º de agosto de 1975, a Companhia Estadual de Águas e Esgotos (CEDAE) é oriunda da fusão da Empresa de Águas do Estado da Guanabara (CEDAG), da Empresa…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchAmsterdam, NetherlandsHQ recorded Nov 6, 20261,001-5,0001,528 contacts →

Exact match

“Water is overal om ons heen.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchFortitude Valley, AustraliaHQ recorded Nov 6, 20261,001-5,0001,112 contacts →

Exact match

“We’re responsible for delivering world-class drinking water and wastewater services to the growing communities of Brisbane, Ipswich, Lockyer Valley, Somerset and Scenic Rim.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchHorsham, PA, United StatesHQ recorded Nov 6, 20261,001-5,0001,107 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
6Exact matchParis, FranceHQ recorded Nov 6, 20261,001-5,0001,054 contacts →

Exact match

“Une entreprise publique unique en Europe Son périmètre d'intervention englobe quatre départements et 180 communes reparties sur quatre autres départements, le SIAAP est - le seul…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchMelbourne, AustraliaHQ recorded Nov 6, 2026501-1,000903 contacts →

Exact match

“We service 2 million people and businesses across a area, from Wallan in the north to Warburton in the east.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchMontreal, QC, CanadaHQ recorded Nov 6, 2026501-1,000857 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
9Exact matchRotterdam, NetherlandsHQ recorded Nov 6, 2026501-1,000839 contacts →

Exact match

“Duurzaam, innovatief en in verbinding met de omgeving; zo werkt Evides Waterbedrijf.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchLondon, ON, CanadaHQ recorded Nov 6, 2026501-1,000751 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
11Exact matchMandaluyong, PhilippinesHQ recorded Nov 6, 2026201-500736 contacts →

Exact match

“With over 30 years of industry experience, PrimeWater has provided total professional water and sewage management solutions to all of its partner communities and Water Districts…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchMississauga, ON, CanadaHQ recorded Nov 6, 2026501-1,000684 contacts →

Exact match

“Water is one of our most precious resources.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchKadima, IsraelHQ recorded Nov 6, 2026501-1,000660 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
14Exact matchSalt Lake City, United StatesHQ recorded Nov 6, 2026501-1,000588 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
15Exact matchBerching, United Arab EmiratesHQ recorded Nov 6, 20261,001-5,000434 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
16Exact matchWespelaar, FranceHQ recorded Nov 6, 2026201-500424 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
17Exact matchAntwerp, BelgiumHQ recorded Nov 6, 2026501-1,000380 contacts →

Exact match

“Pidpa, als integrale waterpartner, biedt een ruime waaier van producten en diensten aan: Drinkwatervoorziening In 64 gemeenten van de provincie Antwerpen staat Pidpa garant voor…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchDelhi, IndiaHQ recorded Nov 6, 2026501-1,000368 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
19Exact matchFort Lauderdale, KS, United StatesHQ recorded Nov 6, 202651-200360 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
20Exact matchMéxico D.f., MexicoHQ recorded Nov 6, 20261,001-5,000347 contacts →

Exact match

“Veolia en México consolida su presencia y liderazgo local con soluciones medio ambientales de agua, residuos y energía para municipios e industrias.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchCastellón De La Plana, SpainHQ recorded Nov 6, 20261,001-5,000340 contacts →

Exact match

“Facsa, empresa ‘origen’ de Nealis, es una referencia en el territorio nacional en la gestión global de los recursos hídricos.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchSantiago, ChileHQ recorded Nov 6, 2026501-1,000326 contacts →

Exact match

“Almar Water Services is the Almar Water Solutions services business line, dedicated to providing integral solutions in sustainable water management, maintaining quality standards…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchVenice, ItalyHQ recorded Nov 6, 20261,001-5,000323 contacts →

Exact match

“Veritas è la società per azioni a capitale interamente pubblico che fornisce servizi ambientali ai 51 Comuni soci (la Città metropolitana di Venezia e parte della provincia di…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchPune, IndiaHQ recorded Nov 6, 2026501-1,000313 contacts →

Exact match

“WTE is a globally recognised manufacturer & exporter of innovative Water & Wastewater Treatment Plants.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchCoventry, United KingdomHQ recorded Nov 6, 20261,001-5,000310 contacts →

Exact match

“Severn Trent Services offer a range of services to municipal and industrial clients, including the Ministry of Defence and the Coal Authority, for design, build and operation of…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 4,005 wastewater treatment operators worldwide

See the full list, filter by size, metro and specialty, and access 20,849 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Wastewater treatment operators worldwide at a glance

As of Nov 6, 2026
27.3%Verified-email coverage
19.1Average contacts per company
11-50Median size (employees)
1.4%Largest-city concentration · Pune
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
1,405
11-50
1,539
51-200
671
201-500
193
501-1,000
62
1,001-5,000
47
5,001-10,000
11
10001+
7

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 wastewater treatment operators are linked below.
What qualifies
Company records worldwide whose business descriptions match “wastewater treatment operators” 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 20,849 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.

Wastewater treatment operators by location

20 lists · largest first

Every Wastewater treatment operators 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 “wastewater treatment operators”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many wastewater treatment operators are there worldwide?

RevenueBase identified 4,005 company matches for wastewater treatment operators 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 wastewater treatment operators?

The United States leads with 670 companies, followed by India (503) and Germany (181). Every wastewater treatment operators list by country and city is linked on this page.

Which city has the most wastewater treatment operators?

Pune leads with 56 company records, followed by Chennai (35) and Ahmedabad (34).

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 20,849 professional contacts with verified work emails tracked across these 4,005 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.