Company lists · Data refreshed September 2026

Top 25 Effluent treatment plant construction companies based in Germany

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

Compiled by the RevenueBase Data Team Data refreshed Sep 15, 2026 146 companies tracked

RevenueBase identified 146 effluent treatment plant construction companies headquartered in Germany as of September 2026 and tracks 1,702 professional contacts across them, including 648 with verified work emails. Hamburg is the largest hub.

This list covers effluent treatment plant construction 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 15, 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 15, 2026 86% judged on-target in blind review

146Companies

1,702Contacts tracked

648Verified emails

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The 25 largest effluent treatment plant construction companies based in Germany

Ranked by team size

Top 25 of 146 effluent treatment plant construction companies based in Germany, ranked by team size, largest first. Data refreshed Sep 15, 2026. RevenueBase Smart Search rates how each company's information relates to effluent treatment plant construction 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	Envirochemie Gmbh	Indirect evidence	Rossdorf, GermanyHQ checked Sep 15, 2026	1,001-5,000	146 contacts →
	Indirect evidence “EnviroChemie is a system provider for holistic industrial water management.” Source: RevenueBase Database · checked Sep 15, 2026
2	Passavant Energy & Environment	Indirect evidence	Frankfurt, GermanyHQ checked Sep 15, 2026	51-200	134 contacts →
	Indirect evidence “Passavant has always been a name synonymous with excellence of execution through innovation.” Source: RevenueBase Database · checked Sep 15, 2026
3	PWT Wasser- UND Abwassertechnik Gmbh	Indirect evidence	Zwingenberg, GermanyHQ checked Sep 15, 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 15, 2026
4	RBS Wave Gmbh	Indirect evidence	Stuttgart, GermanyHQ checked Sep 15, 2026	51-200	88 contacts →
	Indirect evidence “Seit Jahrzehnten steht RBS wave für zuverlässiges und innovatives Know-how im Bereich Ingenieurdienstleistungen.” Source: RevenueBase Database · checked Sep 15, 2026
5	Zahnen Technik Gmbh	Indirect evidence	Arzfeld, GermanyHQ checked Sep 15, 2026	51-200	56 contacts →
	Indirect evidence “WEIL JEDER MENSCH DAS RECHT AUF SAUBERES WASSER HAT!” Source: RevenueBase Database · checked Sep 15, 2026
6	Invent Umwelt- UND Verfahrenstechnik AG	Indirect evidence	Erlangen, GermanyHQ checked Sep 15, 2026	51-200	45 contacts →
	Indirect evidence “INVENT Umwelt- und Verfahrenstechnik AG - Leaders in mixing and aeration Water is the origin and source of all life.” Source: RevenueBase Database · checked Sep 15, 2026
7	Water Treatment Systems	Partial evidence	Kettenbach, GermanyHQ checked Sep 15, 2026	201-500	39 contacts →
	Partial 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 15, 2026
8	Steuler Anlagenbau Gmbh & Co. KG	Strong evidence	Höhr-grenzhausen, GermanyHQ checked Sep 15, 2026	51-200	36 contacts →
	Strong evidence “In addition to regeneration plants for process media, Steuler Anlagenbau designs and supplies complete plant systems for finishing metal surfaces, the treatment and conditioning…” Source: RevenueBase Database · checked Sep 15, 2026
9	Eliquo	Indirect evidence	Bad Homburg Vor Der Höhe, GermanyHQ checked Sep 15, 2026	501-1,000	32 contacts →
	Indirect evidence “ELIQUO WATER GROUP bundles the European activities of SKion Water GmbH.” Source: RevenueBase Database · checked Sep 15, 2026
10	Envirodts Gmbh	Indirect evidence	Friedberg (hessen), GermanyHQ checked Sep 15, 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 15, 2026
11	Hamann AG	Partial evidence	Hollenstedt, GermanyHQ checked Sep 15, 2026	51-200	28 contacts →
	Partial evidence “HAMANN AG is a worldwide recognized supplier of sewage treatment technology for the maritime industry.” Source: RevenueBase Database · checked Sep 15, 2026
12	ATB Water Gmbh	Strong evidence	Porta Westfalica, GermanyHQ checked Sep 15, 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 15, 2026
13	ATD Ingenieurgesellschaft FÜR Abwasserwirtschaft UND Technische Dienstleistungen MBH	Partial evidence	Aachen, GermanyHQ checked Sep 15, 2026	11-50	21 contacts →
	Partial evidence “atd plans and builds plants in all areas of wastewater management” Source: RevenueBase Database · checked Sep 15, 2026
14	Almawatech	Indirect evidence	Babenhausen, GermanyHQ checked Sep 15, 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 15, 2026
15	Bioworks Verfahrenstechnik	Partial evidence	Putzbrunn, GermanyHQ checked Sep 15, 2026	11-50	18 contacts →
	Partial evidence “BIOWORKS® offers full design and execution of process solutions for a whole variety of waste water treatment.” Source: RevenueBase Database · checked Sep 15, 2026
16	FSM Frankenberger Gmbh & Co.Kg	Indirect evidence	Pohlheim, GermanyHQ checked Sep 15, 2026	51-200	15 contacts →
	Indirect evidence “FSM Frankenberger GmbH & Co.” Source: RevenueBase Database · checked Sep 15, 2026
17	Cobos Fluid Service Gmbh	Indirect evidence	München, GermanyHQ checked Sep 15, 2026	11-50	14 contacts →
	Indirect evidence “cobos Fluid Service ist ein industrieller Dienstleister, der auf Basis von Betreibermodellen industrielle Abwässer, Emulsionen und Spülwässer direkt auf dem Kundengelände…” Source: RevenueBase Database · checked Sep 15, 2026
18	BWS Anlagenbau & Service Gmbh	Strong evidence	Oberndorf A.n., GermanyHQ checked Sep 15, 2026	11-50	14 contacts →
	Strong evidence “As a plant constructor we offer you a comprehensive range of services in the field of water and waste water treatment.” Source: RevenueBase Database · checked Sep 15, 2026
19	Ingenieurbüro Miller	Indirect evidence	Nürnberg, GermanyHQ checked Sep 15, 2026	51-200	14 contacts →
	Indirect evidence “Ingenieurskunst seit 120 Jahren Das Ingenieurbüro Miller ist ein im Bereich Umweltschutz tätiges Ingenieurbüro.” Source: RevenueBase Database · checked Sep 15, 2026
20	Aqua & Waste International Gmbh	Indirect evidence	Hanover, GermanyHQ checked Sep 15, 2026	11-50	12 contacts →
	Indirect evidence “Based in Hanover, Germany, aqua & waste International GmbH is an independent engineering and consulting company specializing in the field of environmental protection.” Source: RevenueBase Database · checked Sep 15, 2026
21	Wessel-Umwelttechnik Gmbh	Partial evidence	Hamburg, GermanyHQ checked Sep 15, 2026	11-50	11 contacts →
	Partial evidence “Energy-efficient environmental plants and systems become more important in our age of climate protection.” Source: RevenueBase Database · checked Sep 15, 2026
22	TBP Upcon Gmbh	Indirect evidence	Moosburg, GermanyHQ checked Sep 15, 2026	11-50	10 contacts →
	Indirect evidence “Unser Ingenieurbüro hat sich auf die Verfahrenstechnik, die Abwassertechnik und die Wasseraufbereitung, vor allem in der Papier- und Kartonindustrie, spezialisiert.” Source: RevenueBase Database · checked Sep 15, 2026
23	ZWT Wasser-Und Abwassertechnik Gmbh	Indirect evidence	Bayreuth, GermanyHQ checked Sep 15, 2026	51-200	10 contacts →
	Indirect evidence “Zuverlässige wegweisende Technik Seit 25 Jahren sind wir zuverlässiger Partner der Kommunen, Zweckverbände und Industrie wenn es um wirtschaftliche Lösungen in der Wasser- und…” Source: RevenueBase Database · checked Sep 15, 2026
24	Triton Water Gmbh	Partial evidence	Norderstedt Bei Hamburg, GermanyHQ checked Sep 15, 2026	11-50	10 contacts →
	Partial evidence “TRITON WATER® AG, founded in Hamburg in 1851, offers customized solutions especially for industrial water and waste water treatment for the Food & Beverage, Oil & Gas and Energy…” Source: RevenueBase Database · checked Sep 15, 2026
25	Bremer PRO Aqua Wasser- UND Abwassertechnik Gmbh	Indirect evidence	Bremen, GermanyHQ checked Sep 15, 2026	11-50	8 contacts →
	Indirect evidence “Die Bremer pro aqua Wasser- und Abwasser GmbH arbeitet mit einem seit Jahren eingespielten Team aus hochqualifizierten und erfahrenen Ingenieuren, Technikern und Monteuren.” Source: RevenueBase Database · checked Sep 15, 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: effluent treatment plant construction 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 effluent treatment plant construction companies.
Partial evidence: Its own public description names part of effluent treatment plant construction companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name effluent treatment plant construction 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 146 effluent treatment plant construction companies based in Germany

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Effluent treatment plant construction companies based in Germany at a glance

As of Sep 15, 2026

38.1%Verified-email coverage

11.7Average contacts per company

11-50Median size (employees)

4.1%Largest-city concentration · Hamburg

Sep 15, 2026Page data refreshed

Companies by employee count

1-10

11-50

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 146 companies.

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 effluent treatment plant construction 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 “effluent treatment plant construction 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 effluent treatment plant construction 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 effluent treatment plant construction 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, 648 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 15, 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 effluent treatment plant construction 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 effluent treatment plant construction companies are there based in Germany?

RevenueBase identified 146 effluent treatment plant construction 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?

Envirochemie Gmbh, headquartered in Rossdorf, tops this list with the largest team on record.

Which city has the most effluent treatment plant construction companies?

Hamburg leads with 6 headquartered companies, followed by Berlin (5) and Dresden (4).

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 648 verified decision-maker contacts tracked across these 146 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 15, 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.