Company lists · Data refreshed November 2026

Top 25 Greywater recycling system installers worldwide

RevenueBase identified 136 company matches for greywater recycling system installers worldwide as of November 2026 and tracks 861 professional contacts across them, including 320 with verified work emails. The United States is the largest market and Lawrence the largest hub.

This list covers company matches for greywater recycling system installers 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 installers 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
136Companies
861Contacts tracked
320Verified emails
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The 25 largest greywater recycling system installers worldwide

Ranked by team size
Top 25 of 136 company matches for greywater recycling system installers 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 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
2Exact 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
3Exact 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
4Exact 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
5Exact 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
6Exact 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
7Exact 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
8Exact 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
9Exact 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
10Exact 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
11Exact 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
12Exact matchJüri Alevik, EstoniaHQ recorded Nov 6, 202611-5017 contacts →

Exact match

“We are shaping a circular tomorrow with water reuse.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact 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
14Exact 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
15Exact 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
16Exact 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
17Exact matchPune, IndiaHQ recorded Nov 6, 20261-109 contacts →

Exact match

“JalSevak Solutions is an Indian startup in wastewater management.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchSherbrooke, QC, CanadaHQ recorded Nov 6, 202611-508 contacts →

Exact match

“Wastewater treatment and reuse solutions for off-grid residences, as well as commercial, community, and institutional projects.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchChatswood, AustraliaHQ recorded Nov 6, 202611-508 contacts →

Exact match

“The leader in grey water and macerator pumps for the home and business.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchHampton, NH, United StatesHQ recorded Nov 6, 202611-507 contacts →

Exact match

“Water Treatment Solutions custom designs and installs patented and patent pending water filtration and recycling systems developed for the varied water needs of the stone, glass…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchSpankeren, NetherlandsHQ recorded Nov 6, 20261-107 contacts →

Exact match

“Bluecon engineers developed a compact system for decentralized treatment of municipal wastewater.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchLaprairie, QC, CanadaHQ recorded Nov 6, 20261-107 contacts →

Exact match

“Water & Energy recycling”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchMalaga, AustraliaHQ recorded Nov 6, 20261-107 contacts →

Exact match

“Ecowater Services has been offering the best quality and value for money waste water recycling service to homes, businesses and government bodies across Western Australia since…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchMelton Mowbray, United KingdomHQ recorded Nov 6, 202611-506 contacts →

Exact match

“Kirton design and build state-of-the-art solutions that help industrial, commercial and domestic clients use water safely, more efficiently and in compliance with ever increasing…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchMiami Beach, FL, United StatesHQ recorded Nov 6, 20261-106 contacts →

Exact match

“In collaboration with engineers, architects, and developers, we are building a more secure world by helping communities achieve water resilience, where potable water is protected.”

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

Showing 25 of 136 greywater recycling system installers worldwide

See the full list, filter by size, metro and specialty, and access 320 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Greywater recycling system installers worldwide at a glance

As of Nov 6, 2026
37.2%Verified-email coverage
6.3Average contacts per company
1-10Median size (employees)
1.5%Largest-city concentration · Lawrence
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
84
11-50
39
51-200
8

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 installers are linked below.
What qualifies
Company records worldwide whose business descriptions match “greywater recycling system installers” 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 320 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 installers by location

1 lists · largest first

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

How many greywater recycling system installers are there worldwide?

RevenueBase identified 136 company matches for greywater recycling system installers 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?

WOTA 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 installers?

The United States leads with 32 companies. Every greywater recycling system installers list by country and city is linked on this page.

Which city has the most greywater recycling system installers?

Lawrence leads with 2 company records, followed by Malaga (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 320 professional contacts with verified work emails tracked across these 136 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.