Company lists · Data refreshed November 2026

Top 25 Greywater treatment system builders worldwide

RevenueBase identified 441 company matches for greywater treatment system builders worldwide as of November 2026 and tracks 3,450 professional contacts across them, including 997 with verified work emails. The United States is the largest market and Pune the largest hub.

This list covers company matches for greywater treatment system 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 6, 2026. Country and city lists for greywater treatment system 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 6, 2026 How this list was built
441Companies
3,450Contacts tracked
997Verified emails
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The 25 largest greywater treatment system builders worldwide

Ranked by team size
Top 25 of 441 company matches for greywater treatment system builders 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 matchSydney Olympic Park, AustraliaHQ recorded Nov 6, 2026201-500171 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 · Nov 6, 2026 · View company records in RevenueBase
2Exact matchSprimont, BelgiumHQ recorded Nov 6, 202651-200112 contacts →

Exact match

“In business since 1965, the Belgian company Eloy Water specialises in wastewater treatment and rainwater harvesting for both households, small and large communities.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchSingaporeHQ recorded Nov 6, 202651-20091 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 · Nov 6, 2026 · View company records in RevenueBase
4Exact matchChuo-ku, JapanHQ recorded Nov 6, 202651-20090 contacts →

Exact match

“WOTA is developing small-scale decentralized water recycling systems and autonomous control system for water treatment.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchShawinigan, QC, CanadaHQ recorded Nov 6, 202651-20089 contacts →

Exact match

“Spécialiste dans le développement et la commercialisation de systèmes avancés d'épuration des eaux usées, Bionest offre des systèmes dont les performances inégalées permettent de…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchGroot-ammers, NetherlandsHQ recorded Nov 6, 202651-20080 contacts →

Exact match

“Logisticon Water Treatment designs and constructs complete water treatment installations for the preparation of drinking and process water, and for the treatment of communal and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchClearwater, TX, United StatesHQ recorded Nov 6, 202651-20060 contacts →

Exact match

“Kemco Systems, a CECO Environmental Brand, designs and manufactures energy and water conservation systems for Water Reuse/Recycle, Wastewater Treatment, Wastewater Filtration…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchBréal-sous-montfort, FranceHQ recorded Nov 6, 2026201-50049 contacts →

Exact match

“Established in 2007, AQUATIRIS is an international network of design offices and installers specialising in eco-friendly domestic waste water treatment system.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchKirklington, United KingdomHQ recorded Nov 6, 202611-5048 contacts →

Exact match

“The UK's market leading suppliers of Rainwater Harvesting, Greywater Recycling, and Water Reuse Systems.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchThailandHQ recorded Nov 6, 202651-20041 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchHyderabad, IndiaHQ recorded Nov 6, 202611-5039 contacts →

Exact match

“BlueDrop Enviro is an environmental company fully focused on the single objective of Wastewater Treatment.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchGuelph, ON, CanadaHQ recorded Nov 6, 202611-5036 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchDubai Silicon Oasis, United Arab EmiratesHQ recorded Nov 6, 202651-20035 contacts →

Exact match

“We, at Emvees, pursue excellence in providing water and wastewater treatment systems for our clients.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchKunda Park, AustraliaHQ recorded Nov 6, 202651-20033 contacts →

Exact match

“As the team behind the Ozzi Kleen product range, we strive to engineer, produce and maintain the highest level of quality not only for the pride we take in delivering reliable…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchBucharest, RomaniaHQ recorded Nov 6, 202651-20033 contacts →

Exact match

“At Naiad, we do more than clean and recycle wastewater, we take on the challenge of creating sustainable, forward-thinking water management solutions, that respect both the…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchNew Delhi, IndiaHQ recorded Nov 6, 202651-20032 contacts →

Exact match

“Hydroflux Engineering designs, manufactures, and maintains STP, ETP, and water treatment systems for industries, hospitals, hotels, and residential developments across India.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchGloucester, United KingdomHQ recorded Nov 6, 202611-5029 contacts →

Exact match

“At WCSEE we collaborate closely with our clients to design and deliver reliable, robust, and future-proofed wastewater systems tailored to site specific requirements.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchSan Francisco, United StatesHQ recorded Nov 6, 202611-5029 contacts →

Exact match

“Buildings globally use around 15% of all potable water, but very few buildings reuse that water.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchPorta Westfalica, GermanyHQ recorded Nov 6, 202651-20029 contacts →

Exact match

“ATB WATER - Small sewage treatment plants, wastewater treatment technology and sewage technology for every challenge in industry.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchLenexa, MO, United StatesHQ recorded Nov 6, 202651-20029 contacts →

Exact match

“Water | Wastewater | Greywater | Stormwater BioMicrobics, SeptiTech, and Scienco/FAST manufacture integrated, sustainable, water utilization treatment systems land and sea.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchMogale City, South AfricaHQ recorded Nov 6, 202651-20029 contacts →

Exact match

“Enviro Options (PTY) Ltd trading as Enviro Loo is a proudly South African sanitation company providing sustainable, water-efficient solutions that operate independently of sewer…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchKolkata, IndiaHQ recorded Nov 6, 202651-20028 contacts →

Exact match

“For over four decades, Metcon Water Systems Pvt.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchMarseille, FranceHQ recorded Nov 6, 202611-5025 contacts →

Exact match

“Nomado is specialised in the design and construction of compact water treatment units.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchArezzo, ItalyHQ recorded Nov 6, 202611-5024 contacts →

Exact match

“Dorabaltea® depurazione acque è oggi riconosciuta a livello internazionale come azienda di riferimento nel settore del trattamento delle acque reflue domestiche, assimilate ed…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchSeregno, ItalyHQ recorded Nov 6, 202611-5023 contacts →

Exact match

“Idro è una società presente sul mercato da più di 40anni, altamente specializzata nel settore ambientale: progetta e realizza impianti per il trattamento delle acque reflue civili…”

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

Showing 25 of 441 greywater treatment system builders worldwide

See the full list, filter by size, metro and specialty, and access 997 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Greywater treatment system builders worldwide at a glance

As of Nov 6, 2026
28.9%Verified-email coverage
7.8Average contacts per company
1-10Median size (employees)
2.0%Largest-city concentration · Pune
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
214
11-50
156
51-200
51
201-500
6

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 greywater treatment system builders are linked below.
What qualifies
Company records worldwide whose business descriptions match “greywater treatment system 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 997 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.

Greywater treatment system builders by location

1 lists · largest first

Every Greywater treatment system builders 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 “greywater treatment system builders”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many greywater treatment system builders are there worldwide?

RevenueBase identified 441 company matches for greywater treatment system 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?

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

Which country has the most greywater treatment system builders?

The United States leads with 57 companies. Every greywater treatment system builders list by country and city is linked on this page.

Which city has the most greywater treatment system builders?

Pune leads with 9 company records, followed by Sao Paulo (5) and Tehran (5).

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 997 professional contacts with verified work emails tracked across these 441 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.