Company lists · Data refreshed November 2026

Top 25 Greywater recycling system designers worldwide

RevenueBase identified 207 company matches for greywater recycling system designers worldwide as of November 2026 and tracks 1,616 professional contacts across them, including 506 with verified work emails. The United States is the largest market and Pune the largest hub.

This list covers company matches for greywater recycling system designers 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 recycling system designers 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
207Companies
1,616Contacts tracked
506Verified emails
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The 25 largest greywater recycling system designers worldwide

Ranked by team size
Top 25 of 207 company matches for greywater recycling system designers 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 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
2Exact 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
3Exact 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
4Exact 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
5Exact 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
6Exact matchLeeuwarden, NetherlandsHQ recorded Nov 6, 202611-5036 contacts →

Exact match

“Enjoy comfort.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact 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
8Exact 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
9Exact 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
10Exact 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
11Exact matchAuckland, New ZealandHQ recorded Nov 6, 202611-5027 contacts →

Exact match

“Trusted, Innovative, Water Solutions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchClapiers, FranceHQ recorded Nov 6, 202611-5023 contacts →

Exact match

“AquaTech Innovation est une entreprise de la GreenTech, basée à Montpellier et labellisée Greentech Innovation par le Ministère de la transition écologique.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchCumming, CA, United StatesHQ recorded Nov 6, 202611-5020 contacts →

Exact match

“RainHarvest Systems is your comprehensive resource for residential and commercial water harvesting, treatment and reuse products and systems.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchCincinnati, OH, United StatesHQ recorded Nov 6, 202611-5019 contacts →

Exact match

“At Streamkey Inc, we specialize in custom engineered water and wastewater systems for a variety of commercial and residential applications.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchMilsons Point, AustraliaHQ recorded Nov 6, 202611-5018 contacts →

Exact match

“At Aquacell, we don't think we should waste water, so we take the waste out of wastewater.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchAustin, TX, United StatesHQ recorded Nov 6, 202611-5018 contacts →

Exact match

“Innovative Water Solutions LLC is a full-service water conservation system design / build company that specializes in integrated water demand and supply management for residential…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchLondon, United KingdomHQ recorded Nov 6, 202611-5017 contacts →

Exact match

“Aquality Trading & Consulting Ltd is one of the longest established and leading suppliers of Rainwater Harvesting and Greywater Recycling systems in the UK and France.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchSt. Joseph, NV, United StatesHQ recorded Nov 6, 202611-5015 contacts →

Exact match

“Full Circle Water develops and builds simple-to-use, turnkey wastewater solutions that make recycling water easier, less time-consuming and more cost-effective.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchBarrie, ON, CanadaHQ recorded Nov 6, 202611-5015 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchWoking, United KingdomHQ recorded Nov 6, 20261-1013 contacts →

Exact match

“We offer a range of products and services designed to help you use less water, waste less water and save more water.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchOakstown, United KingdomHQ recorded Nov 6, 202611-5013 contacts →

Exact match

“O'Reilly Oakstown provides an environmentally responsible wastewater treatment solution for both homes and businesses.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchUnited StatesHQ recorded Nov 6, 20261-1012 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchCoalville, United KingdomHQ recorded Nov 6, 202611-5011 contacts →

Exact match

“ByWater Services are a company specialising in commercial water treatment systems, wash water reclamation systems and other related equipment including design, installation and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchTacoma, AZ, United StatesHQ recorded Nov 6, 20261-1010 contacts →

Exact match

“For over 30 years, ADC Water has provided solutions to help our clients win.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchUnited KingdomHQ recorded Nov 6, 202611-5010 contacts →

Exact match

“Sustainable water solutions, including residential and commercial automatic irrigation systems, SUDS, Greywater Recycling Systems, Pump Stations, Borehole pump systems, Rainwater…”

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

Showing 25 of 207 greywater recycling system designers worldwide

See the full list, filter by size, metro and specialty, and access 506 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Greywater recycling system designers worldwide at a glance

As of Nov 6, 2026
31.3%Verified-email coverage
7.8Average contacts per company
1-10Median size (employees)
1.4%Largest-city concentration · Pune
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
112
11-50
70
51-200
17
201-500
1

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 recycling system designers are linked below.
What qualifies
Company records worldwide whose business descriptions match “greywater recycling system designers” 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 506 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 recycling system designers by location

1 lists · largest first

Every Greywater recycling system designers 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 recycling system designers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many greywater recycling system designers are there worldwide?

RevenueBase identified 207 company matches for greywater recycling system designers 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?

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

Which country has the most greywater recycling system designers?

The United States leads with 35 companies. Every greywater recycling system designers list by country and city is linked on this page.

Which city has the most greywater recycling system designers?

Pune leads with 3 company records, followed by Chennai (2) and Marietta (2).

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 506 professional contacts with verified work emails tracked across these 207 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.