Company lists · Data refreshed September 2026

Top 25 On-site water treatment system contractors based in Germany

Name: On-site water treatment system contractors based in Germany
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 375 companies tracked

RevenueBase identified 375 company matches for on-site water treatment system contractors associated with Germany as of September 2026 and tracks 3,890 professional contacts across them, including 1,440 with verified work emails. Berlin is the largest hub.

This list covers company matches for on-site water treatment system contractors 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 September 17, 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 Sep 17, 2026 How this list was built

375Companies

3,890Contacts tracked

1,440Verified emails

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The 25 largest on-site water treatment system contractors based in Germany

Ranked by team size

Top 25 of 375 company matches for on-site water treatment system contractors based in Germany, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 17, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	WTE Wassertechnik Gmbh	Exact match	E, GermanyHQ recorded Sep 17, 2026	501-1,000	242 contacts →
	Exact match “Optimierung.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
2	Grünbeck AG	Exact match	Höchstädt, GermanyHQ recorded Sep 17, 2026	501-1,000	157 contacts →
	Exact match “Know-how seit über 75 Jahren: Die Grünbeck AG bietet sowohl bewährte als auch innovative Produkte zur Trinkwasseraufbereitung im Bereich Enthärtungs, Filter- und Dosiertechnik…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
3	Aqseptence Group	Exact match	Aarbergen, GermanyHQ recorded Sep 17, 2026	1,001-5,000	153 contacts →
	Exact match “Water is becoming one of the defining challenges of our century.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
4	Envirochemie Gmbh	Exact match	Rossdorf, GermanyHQ recorded Sep 17, 2026	1,001-5,000	146 contacts →
	Exact match “EnviroChemie is a system provider for holistic industrial water management.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
5	Passavant Energy & Environment	Exact match	Frankfurt, GermanyHQ recorded Sep 17, 2026	51-200	134 contacts →
	Exact match “Passavant has always been a name synonymous with excellence of execution through innovation.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
6	Culligan Deutschland	Exact match	Neuss, GermanyHQ recorded Sep 17, 2026	201-500	130 contacts →
	Exact match “Qualitativ hochwertiges Trinkwasser ist ein unschätzbares Gut.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
7	BWT Wassertechnik Gmbh	Exact match	Schriesheim, GermanyHQ recorded Sep 17, 2026	201-500	115 contacts →
	Exact match “Wasser ist nicht nur eine kostbare Lebensressource, sondern auch eine der großen Herausforderungen dieses Jahrhunderts.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
8	PWT Wasser- UND Abwassertechnik Gmbh	Exact match	Zwingenberg, GermanyHQ recorded Sep 17, 2026	51-200	113 contacts →
	Exact match “We from PWT Wasser- und Abwassertechnik GmbH with headquarter in Zwingenberg Germany (Close to Frankfurt am Main, Mannheim and Darmstadt) are speacialized as turnkey supplier…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
9	Envirofalk Prozesswasser-Technik Gmbh	Exact match	Westerburg, GermanyHQ recorded Sep 17, 2026	201-500	88 contacts →
	Exact match “Wir sind EnviroFALK!” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
10	Schweitzer-Chemie Gmbh	Exact match	Freiberg Am Neckar, GermanyHQ recorded Sep 17, 2026	201-500	83 contacts →
	Exact match “Wir sind der Experte für industrielle Wasseraufbereitung und Wasserbehandlung und bieten unseren Kunden aus Schlüsselindustrien einen Produktmix aus innovativer Anlagentechnik…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
11	Wehrle	Exact match	Emmendingen, GermanyHQ recorded Sep 17, 2026	201-500	76 contacts →
	Exact match “Industry wastewater and Leachate treatment Equipment rental and operation Industrie Abwasser und Sickerwasser behandlung Mietanlage und Betrieb” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
12	HST Systemtechnik Gmbh & Co.Kg	Exact match	Meschede, GermanyHQ recorded Sep 17, 2026	201-500	72 contacts →
	Exact match “HST Systemtechnik is a provider for products, systems and solutions for the water and wastewater market worldwide since 1985, with more than project references.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
13	Cerafiltec	Exact match	Saarbrücken, GermanyHQ recorded Sep 17, 2026	51-200	67 contacts →
	Exact match “Cerafiltec is a German-based technology solution provider specializing in developing and producing high-performance ceramic modules and components.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
14	Bauer Resources Gmbh	Exact match	Schrobenhausen, GermanyHQ recorded Sep 17, 2026	1,001-5,000	59 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 · Sep 17, 2026 · View company records in RevenueBase
15	Zahnen Technik Gmbh	Exact match	Arzfeld, GermanyHQ recorded Sep 17, 2026	51-200	56 contacts →
	Exact match “WEIL JEDER MENSCH DAS RECHT AUF SAUBERES WASSER HAT!” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
16	Bela Aqua Gmbh	Exact match	Zusmarshausen, GermanyHQ recorded Sep 17, 2026	51-200	46 contacts →
	Exact match “Jede große Geschichte hat ihren Anfang, so auch die der Bela Aqua GmbH – oder die Geschichte der beiden Menschen, die dahinterstehen: Christine und Günter Brandl.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
17	Invent Umwelt- UND Verfahrenstechnik AG	Exact match	Erlangen, GermanyHQ recorded Sep 17, 2026	51-200	45 contacts →
	Exact match “INVENT Umwelt- und Verfahrenstechnik AG - Leaders in mixing and aeration Water is the origin and source of all life.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
18	Inwatec Gmbh & Co. KG	Exact match	Bergheim, GermanyHQ recorded Sep 17, 2026	51-200	42 contacts →
	Exact match “INWATEC was founded in and has since established itself as a leading player in water treatment in Germany and Europe.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
19	Envirofalk Pharmawatersystems Gmbh	Exact match	Leverkusen, GermanyHQ recorded Sep 17, 2026	51-200	41 contacts →
	Exact match “EnviroFALK PharmaWaterSystems is your reliable partner of water treatment plants for pharmaceutical and high purity applications.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
20	Herco Wassertechnik Gmbh	Exact match	Freiberg Am Neckar, GermanyHQ recorded Sep 17, 2026	51-200	40 contacts →
	Exact match “WATER TREATMENT MADE IN GERMANY.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
21	Water Treatment Systems	Exact match	Kettenbach, GermanyHQ recorded Sep 17, 2026	201-500	39 contacts →
	Exact match “Water Treatment’s product portfolio covers a range of water and waste water treatment processes with a focus on headworks, mechanical treatment and biological solutions deployed…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
22	Akvantis	Exact match	Weilheim, GermanyHQ recorded Sep 17, 2026	51-200	34 contacts →
	Exact match “Akvantis is an innovative company changing how society views water by delivering technologies that help our customers get the healthiest fresh drinking water.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
23	Envirodts Gmbh	Exact match	Friedberg (hessen), GermanyHQ recorded Sep 17, 2026	51-200	29 contacts →
	Exact match “Anlagenbau für Wasser- und Abwassertechnik Labore / Institute / Krankenhäuser und Industrie EnviroDTS ist spezialisiert auf die komplette Abwasseraufbereitung und…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
24	ATB Water Gmbh	Exact match	Porta Westfalica, GermanyHQ recorded Sep 17, 2026	51-200	27 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 · Sep 17, 2026 · View company records in RevenueBase
25	Perma-Trade Wassertechnik Gmbh	Exact match	Leonberg, GermanyHQ recorded Sep 17, 2026	51-200	22 contacts →
	Exact match “perma-trade Wassertechnik gilt als Pionier und Innovationstreiber in der um-weltfreundlichen Wasserbehandlung und hat aus seinem besonderen Verant-wortungsbewusstsein für unser…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “on-site water treatment system contractors”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 375 on-site water treatment system contractors based in Germany

See the full list, filter by size, metro and specialty, and access 1,440 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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On-site water treatment system contractors based in Germany at a glance

As of Sep 17, 2026

37.0%Verified-email coverage

10.4Average contacts per company

11-50Median size (employees)

3.5%Largest-city concentration · Berlin

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

155

11-50

139

51-200

201-500

501-1,000

1,001-5,000

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 375 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 “on-site water treatment system contractors” 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 1,440 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 September 17, 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 “on-site water treatment system contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many on-site water treatment system contractors are there based in Germany?

RevenueBase identified 375 company matches for on-site water treatment system contractors associated with Germany as of September 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?

WTE Wassertechnik Gmbh tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most on-site water treatment system contractors?

Berlin leads with 13 company records, followed by Hamburg (7) and Dresden (6).

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 1,440 professional contacts with verified work emails tracked across these 375 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 September 17, 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.