Company lists · Data refreshed September 2026

Top 25 Stormwater treatment companies based in Germany

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

Compiled by the RevenueBase Data Team Data refreshed Sep 22, 2026 137 companies tracked

RevenueBase identified 137 stormwater treatment companies headquartered in Germany as of September 2026 and tracks 2,564 professional contacts across them, including 921 with verified work emails. Berlin is the largest hub.

This list covers stormwater 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 22, 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 22, 2026 86% judged on-target in blind review

137Companies

2,564Contacts tracked

921Verified emails

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The 25 largest stormwater treatment companies based in Germany

Ranked by team size

Top 25 of 137 stormwater treatment companies based in Germany, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to stormwater 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	ACO Group	Indirect evidence	Büdelsdorf, GermanyHQ checked Sep 22, 2026	5,001-10,000	710 contacts →
	Indirect evidence “ACO is a Water-Tech company that protects water.” Source: RevenueBase Database · checked Sep 22, 2026
2	Kessel Drainage Technology	Indirect evidence	Lenting, GermanyHQ checked Sep 22, 2026	501-1,000	243 contacts →
	Indirect evidence “Draining water, treating wastewater and protecting against backwater: As drainage specialists, we protect people from the power of water and protect water from people.” Source: RevenueBase Database · checked Sep 22, 2026
3	Aqseptence Group	Indirect evidence	Aarbergen, GermanyHQ checked Sep 22, 2026	1,001-5,000	153 contacts →
	Indirect evidence “Water is becoming one of the defining challenges of our century.” Source: RevenueBase Database · checked Sep 22, 2026
4	Stadtentwässerungsbetriebe Köln, AÖR	Indirect evidence	Köln, GermanyHQ checked Sep 22, 2026	501-1,000	140 contacts →
	Indirect evidence “Stadtentwässerungsbetriebe Köln, AöR is a government administration company based out of Ostmerheimer Str.” Source: RevenueBase Database · checked Sep 22, 2026
5	Wehrle	Partial evidence	Emmendingen, GermanyHQ checked Sep 22, 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 22, 2026
6	HST Systemtechnik Gmbh & Co.Kg	Indirect evidence	Meschede, GermanyHQ checked Sep 22, 2026	201-500	72 contacts →
	Indirect evidence “HST Systemtechnik is a provider for products, systems and solutions for the water and wastewater market worldwide since 1985, with more than project references.” Source: RevenueBase Database · checked Sep 22, 2026
7	GI Aqua Tech	Partial evidence	Groß-gerau, GermanyHQ checked Sep 22, 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 22, 2026
8	Water Treatment Systems	Partial evidence	Kettenbach, GermanyHQ checked Sep 22, 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 22, 2026
9	Cornelsen Group	Indirect evidence	Essen, GermanyHQ checked Sep 22, 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 22, 2026
10	MKR Metzger Gmbh	Indirect evidence	Monheim, GermanyHQ checked Sep 22, 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 22, 2026
11	ATB Water Gmbh	Partial evidence	Porta Westfalica, GermanyHQ checked Sep 22, 2026	51-200	27 contacts →
	Partial evidence “ATB WATER - Small sewage treatment plants, wastewater treatment technology and sewage technology for every challenge in industry.” Source: RevenueBase Database · checked Sep 22, 2026
12	Almawatech	Indirect evidence	Babenhausen, GermanyHQ checked Sep 22, 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 22, 2026
13	Bioworks Verfahrenstechnik	Partial evidence	Putzbrunn, GermanyHQ checked Sep 22, 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 22, 2026
14	Schaub Umwelttechnik Gmbh	Indirect evidence	Augsburg, GermanyHQ checked Sep 22, 2026	11-50	15 contacts →
	Indirect evidence “Wir sind Spezialisten für Kalk- und Pulveraktivkohle-Anlagen Kalk und Pulveraktivkohle werden eingesetzt, um Wasser aufzubereiten und Abgase zu reinigen.” Source: RevenueBase Database · checked Sep 22, 2026
15	Ingenieurbüro Miller	Indirect evidence	Nürnberg, GermanyHQ checked Sep 22, 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 22, 2026
16	BGU	Indirect evidence	Bretzfeld, GermanyHQ checked Sep 22, 2026	51-200	11 contacts →
	Indirect evidence “Bgu - Umweltschutzanlagen GmbH is an environmental services company based out of 27 Schwabenstraße, Bretzfeld, Germany.” Source: RevenueBase Database · checked Sep 22, 2026
17	Triton Water Gmbh	Partial evidence	Norderstedt Bei Hamburg, GermanyHQ checked Sep 22, 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 22, 2026
18	Up2e Gmbh	Indirect evidence	Rain, GermanyHQ checked Sep 22, 2026	11-50	9 contacts →
	Indirect evidence “up2e!” Source: RevenueBase Database · checked Sep 22, 2026
19	Bremer PRO Aqua Wasser- UND Abwassertechnik Gmbh	Indirect evidence	Bremen, GermanyHQ checked Sep 22, 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 22, 2026
20	CNP Cycles Gmbh	Partial evidence	Alzenau In Unterfranken, GermanyHQ checked Sep 22, 2026	11-50	8 contacts →
	Partial evidence “In the field of urban water treatment, we are one of the world leaders in technological processes for the recovery of carbon (C), nitrogen (N) and phosphorus (P).” Source: RevenueBase Database · checked Sep 22, 2026
21	LKT Lausitzer Klärtechnik Gmbh	Indirect evidence	Luckau, GermanyHQ checked Sep 22, 2026	51-200	8 contacts →
	Indirect evidence “LKT LAUSITZER KLÄRTECHNIK GMBH is a company based out of Luckau, Brandenburg, Germany.” Source: RevenueBase Database · checked Sep 22, 2026
22	Iwat Gmbh	Partial evidence	Hebertshausen, GermanyHQ checked Sep 22, 2026	11-50	7 contacts →
	Partial evidence “We make industrial water treatment more efficient, more sustainable and more reliable.” Source: RevenueBase Database · checked Sep 22, 2026
23	Aqua Plus Wasser- UND Recyclingsysteme Gmbh	Indirect evidence	Böbingen An Der Rems, GermanyHQ checked Sep 22, 2026	11-50	7 contacts →
	Indirect evidence “Die aqua plus Wasser- und Recyclingsysteme GmbH mit Sitz in Böbingen an der Rems (Deutschland) ist ein dynamisches, innovatives Unternehmen im Bereich industriellen Wasser- und…” Source: RevenueBase Database · checked Sep 22, 2026
24	Aquato Umwelttechnologien Gmbh	Indirect evidence	Herford, GermanyHQ checked Sep 22, 2026	1-10	7 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 22, 2026
25	Jiarong International Gmbh	Indirect evidence	Winterbach, GermanyHQ checked Sep 22, 2026	1-10	6 contacts →
	Indirect evidence “Spezialisten für nachhaltige Lösungen in der Abwasseraufbereitung.” Source: RevenueBase Database · checked Sep 22, 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: stormwater 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 stormwater treatment companies.
Partial evidence: Its own public description names part of stormwater treatment companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name stormwater 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 137 stormwater treatment companies based in Germany

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Stormwater treatment companies based in Germany at a glance

As of Sep 22, 2026

35.9%Verified-email coverage

18.7Average contacts per company

11-50Median size (employees)

5.8%Largest-city concentration · Berlin

Sep 22, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

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 137 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 stormwater 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 “stormwater 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 stormwater 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 stormwater 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, 921 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 22, 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 stormwater 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 stormwater treatment companies are there based in Germany?

RevenueBase identified 137 stormwater 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?

ACO Group, headquartered in Budelsdorf, tops this list with the largest team on record.

Which city has the most stormwater treatment companies?

Berlin leads with 8 headquartered companies, followed by Dresden (4) and Hamburg (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 921 verified decision-maker contacts tracked across these 137 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 22, 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.