Company lists · Data refreshed September 2026

Top 25 Activated sludge treatment providers based in Germany

RevenueBase identified 107 company matches for activated sludge treatment providers associated with Germany as of September 2026 and tracks 1,292 professional contacts across them, including 462 with verified work emails. Berlin is the largest hub.

This list covers company matches for activated sludge treatment providers 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 19, 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 19, 2026 How this list was built
107Companies
1,292Contacts tracked
462Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest activated sludge treatment providers based in Germany

Ranked by team size
Top 25 of 107 company matches for activated sludge treatment providers based in Germany, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 19, 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 matchAarbergen, GermanyHQ recorded Sep 19, 20261,001-5,000153 contacts →

Exact match

“Water is becoming one of the defining challenges of our century.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
2Exact matchZwingenberg, GermanyHQ recorded Sep 19, 202651-200113 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 19, 2026 · View company records in RevenueBase
3Exact matchEmmendingen, GermanyHQ recorded Sep 19, 2026201-50076 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 19, 2026 · View company records in RevenueBase
4Exact matchErlangen, GermanyHQ recorded Sep 19, 202651-20045 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 19, 2026 · View company records in RevenueBase
5Exact matchKettenbach, GermanyHQ recorded Sep 19, 2026201-50039 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 19, 2026 · View company records in RevenueBase
6Exact matchFriedberg (hessen), GermanyHQ recorded Sep 19, 202651-20029 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 19, 2026 · View company records in RevenueBase
7Exact matchHollenstedt, GermanyHQ recorded Sep 19, 202651-20028 contacts →

Exact match

“HAMANN AG is a worldwide recognized supplier of sewage treatment technology for the maritime industry.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
8Exact matchPorta Westfalica, GermanyHQ recorded Sep 19, 202651-20027 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 19, 2026 · View company records in RevenueBase
9Exact matchBabenhausen, GermanyHQ recorded Sep 19, 202651-20020 contacts →

Exact match

“ALMAWATECH – Anlagenbau & Prozesslösungen für industrielle Wassertechnik Die ALMAWATECH GmbH ist ein familiengeführtes Unternehmen mit langer Tradition in der industriellen…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
10Exact matchPutzbrunn, GermanyHQ recorded Sep 19, 202611-5018 contacts →

Exact match

“BIOWORKS® offers full design and execution of process solutions for a whole variety of waste water treatment.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
11Exact matchAugsburg, GermanyHQ recorded Sep 19, 202611-5015 contacts →

Exact match

“Wir sind Spezialisten für Kalk- und Pulveraktivkohle-Anlagen Kalk und Pulveraktivkohle werden eingesetzt, um Wasser aufzubereiten und Abgase zu reinigen.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
12Exact matchNuremberg, GermanyHQ recorded Sep 19, 202651-20014 contacts →

Exact match

“Ingenieurskunst seit 120 Jahren Das Ingenieurbüro Miller ist ein im Bereich Umweltschutz tätiges Ingenieurbüro.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
13Exact matchBayreuth, GermanyHQ recorded Sep 19, 202611-5013 contacts →

Exact match

“KLARO is your specialist for small wastewater treatment plants up to 50 PE and bigger wastewater treatment symstems up to PE - Made in Germany Wherever a connection to the sewer…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
14Exact matchHanover, GermanyHQ recorded Sep 19, 202611-5012 contacts →

Exact match

“Based in Hanover, Germany, aqua & waste International GmbH is an independent engineering and consulting company specializing in the field of environmental protection.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
15Exact matchNeu-anspach, GermanyHQ recorded Sep 19, 202611-5010 contacts →

Exact match

“Wir sind die Verfahrenstechnik Schweitzer GmbH - wir stehen für langjährige Kompetenz und Expertise auf dem Gebiet der Klärschlammanlagen.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
16Exact matchBayreuth, GermanyHQ recorded Sep 19, 202651-20010 contacts →

Exact match

“Zuverlässige wegweisende Technik Seit 25 Jahren sind wir zuverlässiger Partner der Kommunen, Zweckverbände und Industrie wenn es um wirtschaftliche Lösungen in der Wasser- und…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
17Exact matchRain, GermanyHQ recorded Sep 19, 202611-509 contacts →

Exact match

“up2e!”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
18Exact matchAdelsdorf, GermanyHQ recorded Sep 19, 202611-509 contacts →

Exact match

“Efficiency and quality are among the most important features of modern aeration systems for biological wastewater treatment plants to operate them in an economically, ecologically…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
19Exact matchAlzenau In Unterfranken, GermanyHQ recorded Sep 19, 202611-508 contacts →

Exact match

“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).”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
20Exact matchPassau, GermanyHQ recorded Sep 19, 202611-508 contacts →

Exact match

“Wir sind ein fachübergreifendes Team aus engagierten Chemikern, Umwelttechnikern und Verfahrensingenieuren mit dem Schwerpunkt Abwasserreinigung.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
21Exact matchNattenheim, GermanyHQ recorded Sep 19, 202611-508 contacts →

Exact match

“BITControl ist Fachplaner für Verfahrenstechnik, Maschinen- und Elektrotechnik für den Bereich Abwasserreinigung und Abwasserentsorgung.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
22Exact matchGelsenkirchen, GermanyHQ recorded Sep 19, 202651-2007 contacts →

Exact match

“AWS GmbH – Ihr Partner für Wasser- und Abwassermanagement Als Spezialist für industrielles und kommunales Wasser- und Abwassermanagement übernehmen wir die langfristige…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
23Exact matchBöbingen An Der Rems, GermanyHQ recorded Sep 19, 202611-507 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
24Exact matchKarlsbad, GermanyHQ recorded Sep 19, 202651-2007 contacts →

Exact match

“Seit über 30 Jahren sind wir zuverlässiger Partner der Kläranlagen für die mobile Schlammentwässerung.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
25Exact matchWinterbach, GermanyHQ recorded Sep 19, 20261-106 contacts →

Exact match

“Spezialisten für nachhaltige Lösungen in der Abwasseraufbereitung.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase

Showing 25 of 107 activated sludge treatment providers based in Germany

See the full list, filter by size, metro and specialty, and access 462 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Activated sludge treatment providers based in Germany at a glance

As of Sep 19, 2026
35.8%Verified-email coverage
12.1Average contacts per company
11-50Median size (employees)
2.8%Largest-city concentration · Berlin
Sep 19, 2026Page data refreshed

Companies by employee count

1-10
44
11-50
39
51-200
19
201-500
3
1,001-5,000
2

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 107 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 “activated sludge treatment providers” 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 462 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 19, 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 “activated sludge treatment providers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many activated sludge treatment providers are there based in Germany?

RevenueBase identified 107 company matches for activated sludge treatment providers 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?

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

Which city has the most activated sludge treatment providers?

Berlin leads with 3 company records, followed by Dresden (3) and Bayreuth (2).

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 462 professional contacts with verified work emails tracked across these 107 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 19, 2026.

Ready to reach these companies? Verified emails and direct dials for all 107 activated sludge treatment providers based in Germany. Start with a free account, no credit card.

Download this list →

Related lists

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.