Company lists · Data refreshed November 2026

Top 25 Wastewater engineering contractors based in Germany

RevenueBase identified 666 company matches for wastewater engineering contractors associated with Germany as of November 2026 and tracks 6,520 professional contacts across them, including 2,255 with verified work emails. Berlin is the largest hub.

This list covers company matches for wastewater engineering 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 November 6, 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 Nov 6, 2026 How this list was built
666Companies
6,520Contacts tracked
2,255Verified emails
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The 25 largest wastewater engineering contractors based in Germany

Ranked by team size
Top 25 of 666 company matches for wastewater engineering contractors based in Germany, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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 matchMannheim, GermanyHQ recorded Nov 6, 2026201-500316 contacts →

Exact match

“GKW Consult GmbH, a company of GFA Group, has developed and implemented projects and advisory services for public and private clients for 70 years in more than 50 countries…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchE, GermanyHQ recorded Nov 6, 2026501-1,000267 contacts →

Exact match

“Optimierung.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchLenting, GermanyHQ recorded Nov 6, 2026501-1,000251 contacts →

Exact match

“Draining water, treating wastewater and protecting against backwater: As drainage specialists, we protect people from the power of water and protect water from people.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchLeipzig, GermanyHQ recorded Nov 6, 2026501-1,000227 contacts →

Exact match

“Im Jahr 1991 mit dem Fokus auf Wasserversorgung und Abwasserbeseitigung gegründet, operiert unsere Unternehmensgruppe heute in Deutschland und Österreich.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchAarbergen, GermanyHQ recorded Nov 6, 20261,001-5,000178 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchCologne, GermanyHQ recorded Nov 6, 2026501-1,000156 contacts →

Exact match

“Stadtentwässerungsbetriebe Köln, AöR is a government administration company based out of Ostmerheimer Str.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchFrankfurt, GermanyHQ recorded Nov 6, 202651-200147 contacts →

Exact match

“Passavant has always been a name synonymous with excellence of execution through innovation.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchZwingenberg, GermanyHQ recorded Nov 6, 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 · Nov 6, 2026 · View company records in RevenueBase
9Exact matchStuttgart, GermanyHQ recorded Nov 6, 202651-200100 contacts →

Exact match

“Seit Jahrzehnten steht RBS wave für zuverlässiges und innovatives Know-how im Bereich Ingenieurdienstleistungen.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchGriesheim, GermanyHQ recorded Nov 6, 2026201-50073 contacts →

Exact match

“SWJ - Experten für innovative Lösungen Die Erbringung von Consulting, Ingenieur und Architekturdienstleistungen aller Art im Industrie- und Privatsektor und der öffentlichen Hand…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchArzfeld, GermanyHQ recorded Nov 6, 2026201-50072 contacts →

Exact match

“WEIL JEDER MENSCH DAS RECHT AUF SAUBERES WASSER HAT!”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchMeschede, GermanyHQ recorded Nov 6, 2026201-50072 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 · Nov 6, 2026 · View company records in RevenueBase
13Exact matchSteinhagen, GermanyHQ recorded Nov 6, 2026201-50069 contacts →

Exact match

“For more than 100 years JUNG PUMPEN has been a reliable partner for sewage and wastewater disposal.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchSchrobenhausen, GermanyHQ recorded Nov 6, 20261,001-5,00063 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 · Nov 6, 2026 · View company records in RevenueBase
15Exact matchGroß-gerau, GermanyHQ recorded Nov 6, 202651-20059 contacts →

Exact match

“GI AQUA TECH provides innovative wastewater treatment solutions, committed to a sustainable future for people and planet.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchKarlsruhe, GermanyHQ recorded Nov 6, 2026201-50058 contacts →

Exact match

“BIT Ingenieure: Die Anlaufstelle für erstklassige Lösungen im Bereich Wasser, Verkehrs- und Stadtplanung.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchFrechen, GermanyHQ recorded Nov 6, 2026201-50058 contacts →

Exact match

“Steinzeug Keramo, a company of the Wienerberger AG, is a solutions and system supplier for the water and wastewater industry.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchFüssen, GermanyHQ recorded Nov 6, 202651-20049 contacts →

Exact match

“Das ISAS-Team ist seit über 35 Jahren ein zuverlässiger, hochspezialisierter und innovativer Partner in allen Fragestellungen rund um bestehende Abwassersysteme und deren…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchHugelsheim, GermanyHQ recorded Nov 6, 202651-20048 contacts →

Exact match

“WALD + CORBE hat sich zu einem namhaften Ingenieurbüro mit mehreren Standorten in den Bereichen Wasserwirtschaft, Wasserbau, Infrastruktur und Ökologie + Umwelt entwickelt.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchBad Homburg Vor Der Höhe, GermanyHQ recorded Nov 6, 2026501-1,00044 contacts →

Exact match

“ELIQUO WATER GROUP bundles the European activities of SKion Water GmbH.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchDüren, GermanyHQ recorded Nov 6, 202651-20043 contacts →

Exact match

“The weyer group is a group- and supplier-independent corporate association of engineering and consulting companies, linked under company law.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchErlangen, GermanyHQ recorded Nov 6, 202651-20039 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 · Nov 6, 2026 · View company records in RevenueBase
23Exact matchHetlingen, GermanyHQ recorded Nov 6, 2026201-50039 contacts →

Exact match

“Moin!”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchMunich, GermanyHQ recorded Nov 6, 202651-20038 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchHanover, GermanyHQ recorded Nov 6, 202651-20037 contacts →

Exact match

“Als unabhängige Gruppe von Ingenieurgesellschaften gehören wir zu den führenden Experten im Bereich Wasser, Abwasser und Klärschlamm in Deutschland.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 666 wastewater engineering contractors based in Germany

See the full list, filter by size, metro and specialty, and access 2,255 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Wastewater engineering contractors based in Germany at a glance

As of Nov 6, 2026
34.6%Verified-email coverage
9.8Average contacts per company
11-50Median size (employees)
2.7%Largest-city concentration · Berlin
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
271
11-50
201
51-200
98
201-500
27
501-1,000
10
1,001-5,000
3
10001+
3

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 666 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 “wastewater engineering 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 2,255 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 November 6, 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 “wastewater engineering contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many wastewater engineering contractors are there based in Germany?

RevenueBase identified 666 company matches for wastewater engineering contractors associated with Germany as of November 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?

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

Which city has the most wastewater engineering contractors?

Berlin leads with 18 company records, followed by Dresden (15) and Hamburg (13).

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 2,255 professional contacts with verified work emails tracked across these 666 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 November 6, 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.