Company lists · Data refreshed October 2026

Top 25 Closed loop wastewater treatment services worldwide

RevenueBase identified 1,808 company matches for closed loop wastewater treatment services worldwide as of October 2026 and tracks 25,151 professional contacts across them, including 4,554 with verified work emails. India is the largest market and Pune the largest hub.

This list covers company matches for closed loop wastewater 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 23, 2026. Country and city lists for closed loop wastewater 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 23, 2026 How this list was built
1,808Companies
25,151Contacts tracked
4,554Verified emails
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The 25 largest closed loop wastewater treatment services worldwide

Ranked by team size
Top 25 of 1,808 company matches for closed loop wastewater treatment services worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 23, 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 Oct 23, 20261,001-5,0003,859 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 23, 2026 · View company records in RevenueBase
2Exact matchDhar, IndiaHQ recorded Oct 23, 2026n/a1,155 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 23, 2026 · View company records in RevenueBase
3Exact matchWoburn, MA, United StatesHQ recorded Oct 23, 20261,001-5,000874 contacts →

Exact match

“Gradiant is a Different Kind of Water Company.”

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase
4Exact matchMumbai, IndiaHQ recorded Oct 23, 20261,001-5,000531 contacts →

Exact match

“We as, Rochem Separation Systems offer 100% water reuse solutions to treat industrial wastewater since 1992.”

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase
5Exact matchWespelaar, FranceHQ recorded Oct 23, 2026201-500417 contacts →

Exact match

“Waterleau is your partner in sustainable water stewardship.”

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase
6Exact matchEspoo, FinlandHQ recorded Oct 23, 2026501-1,000358 contacts →

Exact match

“Evac Group is a global leader in integrated water, waste and wastewater management solutions, as well as corrosion protection and marine growth prevention systems, for the marine…”

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase
7Exact matchDelhi, IndiaHQ recorded Oct 23, 2026501-1,000328 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 · Oct 23, 2026 · View company records in RevenueBase
8Exact matchBurton, United StatesHQ recorded Oct 23, 2026201-500321 contacts →

Exact match

“Osmoflo develops efficient, sustainable and scalable water and wastewater treatment solutions.”

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase
9Exact matchMonroe, OH, United StatesHQ recorded Oct 23, 2026201-500251 contacts →

Exact match

“Valicor is a trusted partner for sustainable waste management solutions.”

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase
10Exact matchSantiago, ChileHQ recorded Oct 23, 202651-200220 contacts →

Exact match

“Ecoriles es una empresa líder en la gestión y tratamiento de aguas (RILes) que integra a su experiencia la economía circular para atender las necesidades medioambientales y de…”

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase
11Exact matchMonterrey, MexicoHQ recorded Oct 23, 2026201-500217 contacts →

Exact match

“Hydrocon busca lograr la Sustentabilidad Económica, Operativa y Ecológica de sus clientes, siendo un Aliado Estratégico en el manejo integral del agua en la industria, a través de…”

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase
12Exact matchMinneapolis, MN, United StatesHQ recorded Oct 23, 2026201-500191 contacts →

Exact match

“Formed in 2017 following the consolidation of independent water treatment solution providers Emefcy and RWL Water, Fluence Corporation was established with the vision of becoming…”

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase
13Exact matchSeclin, FranceHQ recorded Oct 23, 202651-200174 contacts →

Exact match

“Traitement des Eaux Industrielles et Lixiviats Location de Matériel et Prestations d'Exploitation Industry wastewater and Leachate treatment Equipment rental and operation…”

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase
14Exact matchBalk, NetherlandsHQ recorded Oct 23, 2026201-500173 contacts →

Exact match

“Paques helps companies and municipalities contribute to the major challenges of today: to reduce their water and carbon footprints and reclaim valuable resources.”

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase
15Exact matchSydney Olympic Park, AustraliaHQ recorded Oct 23, 2026201-500168 contacts →

Exact match

“At Atlan Stormwater, we draw on more than 45 years’ experience in the design, testing and manufacture of water treatment systems that are utilised in over 45 countries.”

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase
16Exact matchSingapore, United StatesHQ recorded Oct 23, 2026201-500158 contacts →

Exact match

“Together with our customers, BW Water, now part of De Nora Water Technologies, is committed to addressing the world's most critical water challenges.”

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase
17Exact matchPune, IndiaHQ recorded Oct 23, 2026201-500151 contacts →

Exact match

“Aquatech is a global leader in water purification systems and wastewater treatment technology for industrial and infrastructure markets.”

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase
18Exact matchIndiaHQ recorded Oct 23, 2026201-500138 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase
19Exact matchTampa, FL, United StatesHQ recorded Oct 23, 202651-200136 contacts →

Exact match

“Our priority is to provide safe, reliable, and cost-effective water and wastewater treatment solutions through our Water-as-a-Service® approach.”

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase
20Exact matchBarueri, BrazilHQ recorded Oct 23, 202651-200127 contacts →

Exact match

“A Attend Ambiental é fruto da parceria entre: • a Sabesp, uma das maiores empresas de saneamento do mundo, e • a Latte Saneamento, maior empresa de serviços ambientais do Brasil.”

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase
21Exact matchDeinze, BelgiumHQ recorded Oct 23, 2026201-500116 contacts →

Exact match

“Ekopak provides innovative solutions for industrial water treatment and wastewater treatment.”

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase
22Exact matchAustin, TX, United StatesHQ recorded Oct 23, 202651-200101 contacts →

Exact match

“We make water better.”

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase
23Exact matchOklahoma City, OK, United StatesHQ recorded Oct 23, 202651-20098 contacts →

Exact match

“At World Water Works, we strive to provide industrial and municipal customers with proven and cost-effective wastewater treatment solutions that deliver superior effluent quality.”

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase
24Exact matchNew Delhi, IndiaHQ recorded Oct 23, 202651-20091 contacts →

Exact match

“BioPetroClean™: Revolutionizing Wastewater Treatment BioPetroClean™ is a leading cleantech company dedicated to transforming wastewater treatment through innovation and technology.”

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase
25Exact matchSingaporeHQ recorded Oct 23, 202651-20089 contacts →

Exact match

“Incorporated in 1977 and based in Singapore, Hitachi Aqua-Tech has built a strong reputation as a specialist in water management solutions.”

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase

Showing 25 of 1,808 closed loop wastewater treatment services worldwide

See the full list, filter by size, metro and specialty, and access 4,554 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Closed loop wastewater treatment services worldwide at a glance

As of Oct 23, 2026
18.1%Verified-email coverage
13.9Average contacts per company
11-50Median size (employees)
1.8%Largest-city concentration · Pune
Oct 23, 2026Page data refreshed

Companies by employee count

1-10
751
11-50
692
51-200
261
201-500
55
501-1,000
15
1,001-5,000
9
5,001-10,000
3
10001+
3

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 closed loop wastewater treatment services are linked below.
What qualifies
Company records worldwide whose business descriptions match “closed loop wastewater 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 4,554 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 23, 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.

Closed loop wastewater treatment services by location

12 lists · largest first

Every Closed loop wastewater treatment services list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

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 “closed loop wastewater treatment services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many closed loop wastewater treatment services are there worldwide?

RevenueBase identified 1,808 company matches for closed loop wastewater 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?

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 closed loop wastewater treatment services?

India leads with 292 companies, followed by the United States (261) and Germany (81). Every closed loop wastewater treatment services list by country and city is linked on this page.

Which city has the most closed loop wastewater treatment services?

Pune leads with 32 company records, followed by Ahmedabad (17) and Chennai (17).

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 4,554 professional contacts with verified work emails tracked across these 1,808 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 23, 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.