Company lists · Data refreshed September 2026

Top 25 Water treatment companies based in Germany

Name: Water treatment companies based in Germany
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 7, 2026 304 companies tracked

RevenueBase identified 304 water treatment companies headquartered in Germany as of September 2026 and tracks 3,248 professional contacts across them, including 1,137 with verified work emails and 67 with mobile numbers. Berlin is the largest hub.

This list covers water treatment companies headquartered in Germany, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 7, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 7, 2026 86% judged on-target in blind review

304Companies

3,248Contacts tracked

1,137Verified emails

67Mobile numbers

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The 25 largest water treatment companies based in Germany

Ranked by team size

Top 25 of 304 water treatment companies based in Germany, ranked by team size, largest first. Data refreshed Sep 7, 2026. RevenueBase Smart Search rates how each company's information relates to water treatment companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Grünbeck AG	Indirect evidence	Höchstädt, GermanyHQ checked Sep 7, 2026	501-1,000	157 contacts →
	Indirect evidence “Know-how seit über 75 Jahren: Die Grünbeck AG bietet sowohl bewährte als auch innovative Produkte zur Trinkwasseraufbereitung im Bereich Enthärtungs, Filter- und Dosiertechnik…” Source: RevenueBase Database · checked Sep 7, 2026
2	Aqseptence Group	Partial evidence	Aarbergen, GermanyHQ checked Sep 7, 2026	1,001-5,000	153 contacts →
	Partial evidence “Water is becoming one of the defining challenges of our century.” Source: RevenueBase Database · checked Sep 7, 2026
3	Envirochemie Gmbh	Partial evidence	Rossdorf, GermanyHQ checked Sep 7, 2026	1,001-5,000	146 contacts →
	Partial evidence “EnviroChemie is a system provider for holistic industrial water management.” Source: RevenueBase Database · checked Sep 7, 2026
4	Culligan Deutschland	Indirect evidence	Neuss, GermanyHQ checked Sep 7, 2026	201-500	130 contacts →
	Indirect evidence “Qualitativ hochwertiges Trinkwasser ist ein unschätzbares Gut.” Source: RevenueBase Database · checked Sep 7, 2026
5	BWT Wassertechnik Gmbh	Indirect evidence	Schriesheim, GermanyHQ checked Sep 7, 2026	201-500	115 contacts →
	Indirect evidence “Wasser ist nicht nur eine kostbare Lebensressource, sondern auch eine der großen Herausforderungen dieses Jahrhunderts.” Source: RevenueBase Database · checked Sep 7, 2026
6	PWT Wasser- UND Abwassertechnik Gmbh	Indirect evidence	Zwingenberg, GermanyHQ checked Sep 7, 2026	51-200	113 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 7, 2026
7	Envirofalk Prozesswasser-Technik Gmbh	Indirect evidence	Westerburg, GermanyHQ checked Sep 7, 2026	201-500	88 contacts →
	Indirect evidence “Wir sind EnviroFALK!” Source: RevenueBase Database · checked Sep 7, 2026
8	Schweitzer-Chemie Gmbh	Indirect evidence	Freiberg Am Neckar, GermanyHQ checked Sep 7, 2026	201-500	83 contacts →
	Indirect evidence “Wir sind der Experte für industrielle Wasseraufbereitung und Wasserbehandlung und bieten unseren Kunden aus Schlüsselindustrien einen Produktmix aus innovativer Anlagentechnik…” Source: RevenueBase Database · checked Sep 7, 2026
9	Wehrle	Partial evidence	Emmendingen, GermanyHQ checked Sep 7, 2026	201-500	76 contacts →
	Partial evidence “Industry wastewater and Leachate treatment Equipment rental and operation Industrie Abwasser und Sickerwasser behandlung Mietanlage und Betrieb” Source: RevenueBase Database · checked Sep 7, 2026
10	Zahnen Technik Gmbh	Indirect evidence	Arzfeld, GermanyHQ checked Sep 7, 2026	51-200	56 contacts →
	Indirect evidence “WEIL JEDER MENSCH DAS RECHT AUF SAUBERES WASSER HAT!” Source: RevenueBase Database · checked Sep 7, 2026
11	GI Aqua Tech	Partial evidence	Groß-gerau, GermanyHQ checked Sep 7, 2026	51-200	49 contacts →
	Partial evidence “GI AQUA TECH provides innovative wastewater treatment solutions, committed to a sustainable future for people and planet.” Source: RevenueBase Database · checked Sep 7, 2026
12	Bela Aqua Gmbh	Indirect evidence	Zusmarshausen, GermanyHQ checked Sep 7, 2026	51-200	46 contacts →
	Indirect evidence “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.” Source: RevenueBase Database · checked Sep 7, 2026
13	Inwatec Gmbh & Co. KG	Strong evidence	Bergheim, GermanyHQ checked Sep 7, 2026	51-200	42 contacts →
	Strong evidence “INWATEC was founded in and has since established itself as a leading player in water treatment in Germany and Europe.” Source: RevenueBase Database · checked Sep 7, 2026
14	Envirofalk Pharmawatersystems Gmbh	Strong evidence	Leverkusen, GermanyHQ checked Sep 7, 2026	51-200	41 contacts →
	Strong evidence “EnviroFALK PharmaWaterSystems is your reliable partner of water treatment plants for pharmaceutical and high purity applications.” Source: RevenueBase Database · checked Sep 7, 2026
15	Herco Wassertechnik Gmbh	Strong evidence	Freiberg Am Neckar, GermanyHQ checked Sep 7, 2026	51-200	40 contacts →
	Strong evidence “WATER TREATMENT MADE IN GERMANY.” Source: RevenueBase Database · checked Sep 7, 2026
16	Water Treatment Systems	Strong evidence	Kettenbach, GermanyHQ checked Sep 7, 2026	201-500	39 contacts →
	Strong evidence “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…” Source: RevenueBase Database · checked Sep 7, 2026
17	Cornelsen Group	Indirect evidence	Essen, GermanyHQ checked Sep 7, 2026	51-200	35 contacts →
	Indirect evidence “Headquartered in Essen (Germany), with a branch in Nailsea (United Kingdom), Stockholm (Sweden) and Boston,(US) Cornelsen Group has been at the forefront of innovative remediation…” Source: RevenueBase Database · checked Sep 7, 2026
18	Akvantis	Partial evidence	Weilheim, GermanyHQ checked Sep 7, 2026	51-200	34 contacts →
	Partial evidence “Akvantis is an innovative company changing how society views water by delivering technologies that help our customers get the healthiest fresh drinking water.” Source: RevenueBase Database · checked Sep 7, 2026
19	Envirodts Gmbh	Indirect evidence	Friedberg (hessen), GermanyHQ checked Sep 7, 2026	51-200	29 contacts →
	Indirect evidence “Anlagenbau für Wasser- und Abwassertechnik Labore / Institute / Krankenhäuser und Industrie EnviroDTS ist spezialisiert auf die komplette Abwasseraufbereitung und…” Source: RevenueBase Database · checked Sep 7, 2026
20	MKR Metzger Gmbh	Indirect evidence	Monheim, GermanyHQ checked Sep 7, 2026	51-200	27 contacts →
	Indirect evidence “Success story - tradition becomes innovation MKR Metzger can look back on three successful decades.” Source: RevenueBase Database · checked Sep 7, 2026
21	ATB Water Gmbh	Strong evidence	Porta Westfalica, GermanyHQ checked Sep 7, 2026	51-200	27 contacts →
	Strong evidence “ATB WATER - Small sewage treatment plants, wastewater treatment technology and sewage technology for every challenge in industry.” Source: RevenueBase Database · checked Sep 7, 2026
22	Perma-Trade Wassertechnik Gmbh	Indirect evidence	Leonberg, GermanyHQ checked Sep 7, 2026	51-200	22 contacts →
	Indirect evidence “perma-trade Wassertechnik gilt als Pionier und Innovationstreiber in der um-weltfreundlichen Wasserbehandlung und hat aus seinem besonderen Verant-wortungsbewusstsein für unser…” Source: RevenueBase Database · checked Sep 7, 2026
23	Almawatech	Indirect evidence	Babenhausen, GermanyHQ checked Sep 7, 2026	51-200	20 contacts →
	Indirect evidence “ALMAWATECH – Anlagenbau & Prozesslösungen für industrielle Wassertechnik Die ALMAWATECH GmbH ist ein familiengeführtes Unternehmen mit langer Tradition in der industriellen…” Source: RevenueBase Database · checked Sep 7, 2026
24	HET Filter Gmbh	Indirect evidence	Altenstadt, GermanyHQ checked Sep 7, 2026	11-50	20 contacts →
	Indirect evidence “HET Filter GmbH was established in Altenstadt in 1989.” Source: RevenueBase Database · checked Sep 7, 2026
25	Xylem Water Solutions Herford Gmbh	Indirect evidence	Herford, GermanyHQ checked Sep 7, 2026	11-50	19 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 7, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: water treatment companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names water treatment companies.
Partial evidence: Its own public description names part of water treatment companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name water treatment companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 304 water treatment companies based in Germany

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Water treatment companies based in Germany at a glance

As of Sep 7, 2026

35.0%Verified-email coverage

2.1%Mobile-number coverage

10.7Average contacts per company

11-50Median size (employees)

2.6%Largest-city concentration · Berlin

Sep 7, 2026Page data refreshed

Companies by employee count

1-10

125

11-50

111

51-200

201-500

501-1,000

1,001-5,000

10001+

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

1,0260–30

10531–60

061–90

090–180

6180+

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among water treatment companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Germany whose own description of what they do matches “water treatment companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names water treatment companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among water treatment companies, and records with no verified work email. Companies headquartered outside Germany are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 1,137 across the full list. 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 7, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names water treatment companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many water treatment companies are there based in Germany?

RevenueBase identified 304 water treatment companies headquartered in Germany as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Grünbeck AG, headquartered in Hochstadt, tops this list with the largest team on record.

Which city has the most water treatment companies?

Berlin leads with 8 headquartered companies, followed by Essen (5) and Hamburg (5).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 1,137 verified decision-maker contacts tracked across these 304 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 7, 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 Smart Search, 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.