Company lists · Data refreshed September 2026
Top 25 Water treatment consulting firms based in Austria
RevenueBase identified 57 water treatment consulting firms headquartered in Austria as of September 2026 and tracks 492 professional contacts across them, including 216 with verified work emails. Wien is the largest hub.
This list covers water treatment consulting firms headquartered in Austria, 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 27, 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.
The 25 largest water treatment consulting firms based in Austria
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 82 contacts → | ||||
Partial evidence “The Best Water Technology Group (BWT) is the market leader for water technology.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 2 | 52 contacts → | ||||
Partial evidence “The VTA Group specialises in optimising municipal and industrial sewage treatment plants.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 3 | 30 contacts → | ||||
Strong evidence “The international operating GIS Aqua group is a reliable and well-known partner in the water treatment plant industry.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 4 | 27 contacts → | ||||
Strong evidence “We are specialized in designing, manufacturing and maintaining water treatment systems for all major industries.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 5 | 25 contacts → | ||||
Strong evidence “GWT Gesellschaft für Wasser- und Wärmetechnik GmbH is a company with over 35 years of expertise in engineering and construction of water treatment plants globally.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 6 | 23 contacts → | ||||
Indirect evidence “WASSER IST UNSER ELEMENT.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 7 | 22 contacts → | ||||
Indirect evidence “Ziviltechniker GmbH, Ingenieurleistungen im Bereich Siedlungswasserbau, Abwasserreinigung und Verfahrenstechnik, Hochwasserschutz, Straßenplanung, Vermessung und…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 8 | 13 contacts → | ||||
Strong evidence “cell is an innovative consulting, service and product provider for water.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 9 | 13 contacts → | ||||
Indirect evidence “AQUA ENGINEERING was established in 1963 as engineering company but has early developed into an EPC contracting business and has since supplied over 100 projects worldwide with 50…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 10 | 12 contacts → | ||||
Strong evidence “SFC Umwelttechnik GmbH is a specialized company for process technologies in the field of water and wastewater treatment.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 11 | 11 contacts → | ||||
Partial evidence “Gegründet im Jahr 1945, zählen wir - seit 1971 als ÖSTAP Engineering & Consulting GmbH - zu den ältesten Planungsbüros in der österreichischen Wasserwirtschaft.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 12 | 7 contacts → | ||||
Indirect evidence “Seit über 45 Jahren bieten wir von der Hydrologischen Untersuchungsstelle Salzburg alles rund um Wasser.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 13 | 5 contacts → | ||||
Partial evidence “We have a long tradition of responsible partnership with the water and waste water industry in offering products and services in the fields of measurement, inspection, cleaning…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 14 | 5 contacts → | ||||
Indirect evidence “Wir arbeiten in der Umwelttechnik und Wasserwirtschaft, speziell in den Bereichen Trinkwasser, Abwasser, Niederschlagswasser, Straßenbau, Wasserbau, Glasfaserinfrastruktur und…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 15 | 4 contacts → | ||||
Indirect evidence “Hydro-Ingenieure Umwelttechnik GmbH is an executive office company based out of Steiner Landstraße 27a, Krems an der Donau, Austria.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 16 | 4 contacts → | ||||
Indirect evidence “Die Wastewater Solutions Group (WWSG) plant, konstruiert, installiert und betreibt Wassermanagementsysteme, die wirtschaftliche und ökologische Vorteile bieten.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 17 | 4 contacts → | ||||
Indirect evidence “Ingenieurbüro für Kulturtechnik und Wasserwirtschaft.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 18 | 4 contacts → | ||||
Indirect evidence “Wir von Mach & Partner beschäftigen uns seit mehr als 30 Jahren mit dem Thema Wasser: Ein hoch qualifiziertes Team aus Projektleitern, technischen Zeichnern und administrativen…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 19 | 4 contacts → | ||||
Indirect evidence “Seit mehr als 40 Jahren beraten wir unsere Kunden fachmännisch und vollkommen produktneutral, erarbeiten die rechtlich, technisch und wirtschaftlich beste Lösung und betreuen die…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 20 | 3 contacts → | ||||
Indirect evidence “Thermochema unterstützt Kunden und Partnerbetriebe mit präziser Wasseranalytik, normgerechten Produkten und Lösungen und professioneller Begleitung, damit System, Trink- und…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 21 | 2 contacts → | ||||
Indirect evidence “Welcome to ROTREAT Abwasserreinigung GmbH, a leading provider of advanced membrane filtration plants since our establishment in 1993.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 22 | 2 contacts → | ||||
Indirect evidence “Stehst du vor der Herausforderung, effiziente Abwassertechnik-Lösungen zu finden, aber der Markt ist unübersichtlich und komplex?” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 23 | 2 contacts → | ||||
Indirect evidence “BVS bietet alle Arten von Wasseraufbereitungsanlagen für Gewerbe, Industrie, Gesundheitswesen und Kommunen an.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 24 | 2 contacts → | ||||
Indirect evidence “Unsere Schwerpunkte liegen in der Planung und Realisierung kommunaler Wasserversorgungs- und Abwasserbeseitigungsanlagen.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 25 | 2 contacts → | ||||
Indirect evidence “Der Schwerpunkt unserer Tätigkeit ist die Unterstützung von Immobilienunternehmen, Krankenhäusern, Schulen sowie Industriebetrieben bei der Einhaltung deren gesetzlichen…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
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 consulting firms. 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 consulting firms.
- Partial evidence
- Its own public description names part of water treatment consulting firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name water treatment consulting firms. 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 57 water treatment consulting firms based in Austria
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Water treatment consulting firms based in Austria at a glance
As of Sep 27, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for Austria, so it is reported there. Company counts and contact totals on this page are exact for Austria, over 57 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 water treatment consulting firms, 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 Austria whose own description of what they do matches “water treatment consulting firms”. 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 consulting firms), 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 consulting firms, and records with no verified work email. Companies headquartered outside Austria 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, 216 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 27, 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 consulting firms, 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 consulting firms are there based in Austria?
RevenueBase identified 57 water treatment consulting firms headquartered in Austria 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?
BWT Group, headquartered in Mondsee, tops this list with the largest team on record.
Which city has the most water treatment consulting firms?
Wien leads with 9 headquartered companies, followed by Graz (4) and Innsbruck (3).
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 216 verified decision-maker contacts tracked across these 57 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 27, 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.
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