Company lists · Data refreshed November 2026

Top 25 Water and sanitation organizations based in Germany

RevenueBase identified 399 company matches for water and sanitation organizations associated with Germany as of November 2026 and tracks 6,379 professional contacts across them, including 2,180 with verified work emails. Berlin is the largest hub.

This list covers company matches for water and sanitation organizations associated with Germany, 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.

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
399Companies
6,379Contacts tracked
2,180Verified emails
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The 25 largest water and sanitation organizations based in Germany

Ranked by team size
Top 25 of 399 company matches for water and sanitation organizations based in Germany, 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 matchBüdelsdorf, GermanyHQ recorded Nov 6, 20265,001-10,000751 contacts →

Exact match

“ACO is a Water-Tech company that protects water.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchHamburg, GermanyHQ recorded Nov 6, 20261,001-5,000514 contacts →

Exact match

“Wasser ist Leben – und wir sorgen täglich dafür, dass zuverlässig reines Trinkwasser durch die Wasserhähne fließt und Abwasser nachhaltig entsorgt wird.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchMannheim, GermanyHQ recorded Nov 6, 2026201-500316 contacts →

Exact match

“GKW Consult GmbH, a company of GFA Group, has developed and implemented projects and advisory services for public and private clients for 70 years in more than 50 countries…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchE, GermanyHQ recorded Nov 6, 2026501-1,000267 contacts →

Exact match

“Optimierung.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchGelsenkirchen, GermanyHQ recorded Nov 6, 20261,001-5,000262 contacts →

Exact match

“Wir sind Ihr Partner für Kommunen, Industrie und Gewerbe, wenn es um die sichere Versorgung und effiziente Bewirtschaftung von Infrastruktur geht.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchRatingen, GermanyHQ recorded Nov 6, 20261,001-5,000195 contacts →

Exact match

“TOI TOI & DIXI Group GmbH is an environmental services company based out of Ratingen, North Rhine-Westphalia, Germany.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchDreieich, GermanyHQ recorded Nov 6, 20261,001-5,000177 contacts →

Exact match

“CWS Hygiene is committed to a healthier and safer tomorrow.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchBrake, GermanyHQ recorded Nov 6, 2026501-1,000172 contacts →

Exact match

“An der Quelle zum Erfolg: Der OOWV als Arbeitgeber.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchBonn, GermanyHQ recorded Nov 6, 2026201-500168 contacts →

Exact match

“Der Deutsche Verein des Gas- und Wasserfaches e.V.(DVGW) fördert das Gas- und Wasserfach mit den Schwerpunkten Sicherheit, Hygiene und Umweltschutz.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchVillmergen, GermanyHQ recorded Nov 6, 2026201-500161 contacts →

Exact match

“KWC Professional becomes DELABIE In 2025, DELABIE Group acquired KWC Professional, strengthening its position as a pan-European leader in sanitary equipment for public and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchCologne, GermanyHQ recorded Nov 6, 2026501-1,000156 contacts →

Exact match

“Stadtentwässerungsbetriebe Köln, AöR is a government administration company based out of Ostmerheimer Str.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchNeuss, GermanyHQ recorded Nov 6, 2026201-500152 contacts →

Exact match

“Qualitativ hochwertiges Trinkwasser ist ein unschätzbares Gut.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchHamburg, GermanyHQ recorded Nov 6, 202611-50109 contacts →

Exact match

“Viva con Agua de Sankt Pauli is an organisation committed to ensuring that all people worldwide have access to clean drinking water.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchHennef (sieg), GermanyHQ recorded Nov 6, 202651-200106 contacts →

Exact match

“Die DWA ist ein technisch-wissenschaftlicher Fachverband.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchGroß-gerau, GermanyHQ recorded Nov 6, 2026201-50099 contacts →

Exact match

“Hessenwasser steht für eine zuverlässige, nachhaltige und zukunftsorientierte Trinkwasserversorgung.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchDresden, GermanyHQ recorded Nov 6, 202651-20095 contacts →

Exact match

“arche nova ist eine unabhängige, nicht konfessionelle Hilfsorganisation mit über 30 Jahren Erfahrung in der humanitären Hilfe, Nothilfe und Entwicklungszusammenarbeit.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchBremen, GermanyHQ recorded Nov 6, 202651-20084 contacts →

Exact match

“BORDA e.V.(Bremen Overseas Research & Development Association) is an expert NGO specializing in full-cycle decentralized sanitation.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchWuppertal, GermanyHQ recorded Nov 6, 2026201-50075 contacts →

Exact match

“Wer wir sind: Seit 1930 schützen und gestalten wir die Wasserwelt der Wupperregion.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchKarlsruhe, GermanyHQ recorded Nov 6, 202651-20073 contacts →

Exact match

“Das TZW ist eine Einrichtung des DVGW Deutscher Verein des Gas- und Wasserfaches e.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchSchrobenhausen, GermanyHQ recorded Nov 6, 20261,001-5,00063 contacts →

Exact match

“Die BAUER Resources GmbH ist der Geschäftsbereich für Umweltdienstleistungen der BAUER Gruppe mit Sitz in Schrobenhausen.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchKamp-lintfort, GermanyHQ recorded Nov 6, 2026201-50057 contacts →

Exact match

“Über uns: Wasser ist unser Element.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchDüren, GermanyHQ recorded Nov 6, 2026501-1,00055 contacts →

Exact match

“Unser Impressum: Impressum | WVER Als öffentlich-rechtlicher Wasserverband Eifel-Rur setzen wir uns für eine ganzheitliche Wasserwirtschaft ein.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchMülheim / Ruhr, GermanyHQ recorded Nov 6, 202651-20054 contacts →

Exact match

“Das IWW Zentrum Wasser spaltet sich in drei Gesellschaften auf: Das IWW Institut für Wasserforschung gGmbH, die IWW Analytik & Services GmbH und die übergeordnete Holding.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchGummersbach, GermanyHQ recorded Nov 6, 2026201-50046 contacts →

Exact match

“Wasserwirtschaft im Bergischen: wir wissen wie's läuft!”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchHetlingen, GermanyHQ recorded Nov 6, 2026201-50039 contacts →

Exact match

“Moin!”

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

Showing 25 of 399 water and sanitation organizations based in Germany

See the full list, filter by size, metro and specialty, and access 2,180 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Water and sanitation organizations based in Germany at a glance

As of Nov 6, 2026
34.2%Verified-email coverage
16.0Average contacts per company
1-10Median size (employees)
5.8%Largest-city concentration · Berlin
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
190
11-50
101
51-200
47
201-500
20
501-1,000
6
1,001-5,000
6
5,001-10,000
1
10001+
1

Email recency for this list is measured worldwide rather than for Germany, so it is reported there. Company counts and contact totals on this page are exact for Germany, over 399 companies.

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.
What qualifies
Company records associated with Germany whose business descriptions match “water and sanitation organizations” 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. Where headquarters information is recorded, preview rows are also filtered to this page’s location. 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 2,180 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.

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 “water and sanitation organizations”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many water and sanitation organizations are there based in Germany?

RevenueBase identified 399 company matches for water and sanitation organizations associated with Germany 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?

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

Which city has the most water and sanitation organizations?

Berlin leads with 23 company records, followed by Hamburg (10) and Munich (9).

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 2,180 professional contacts with verified work emails tracked across these 399 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.