Company lists · Data refreshed September 2026
Top 25 Water engineering firms based in Austria
RevenueBase identified 100 water engineering firms headquartered in Austria as of September 2026 and tracks 778 professional contacts across them, including 327 with verified work emails. Wien is the largest hub.
This list covers water engineering 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 21, 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 engineering firms based in Austria
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 212 contacts → | ||||
Partial evidence “GC GROUP is an independent and family-owned global business offering integrated engineering and consulting services for infrastructure projects.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 2 | 35 contacts → | ||||
Indirect evidence “KS Ingenieure ZT GmbH - Ihr starker Partner für Ingenieurleistungen aus einer Hand!” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 3 | 30 contacts → | ||||
Partial 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 21, 2026Thanks. The Data Team will review it. | |||||
| 4 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 5 | 23 contacts → | ||||
Partial evidence “Posch & Partners core competence lies within the vital and overlapping fields of water, energy and environment.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 6 | 22 contacts → | ||||
Indirect evidence “Ziviltechniker GmbH, Ingenieurleistungen im Bereich Siedlungswasserbau, Abwasserreinigung und Verfahrenstechnik, Hochwasserschutz, Straßenplanung, Vermessung und…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 7 | 21 contacts → | ||||
Partial evidence “BauCon International ZT GmbH, headquartered in Vienna, Austria, is a leading civil engineering consultancy delivering innovative and sustainable infrastructure solutions worldwide.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 8 | 19 contacts → | ||||
Indirect evidence “Die ingenos ZT GmbH bietet ein breites Leistungsspektrum für bautechnische Dienstleistungen von der Projektentwicklung bis zur Bauaufsicht aus einer Hand.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 9 | 19 contacts → | ||||
Indirect evidence “TIBA ist auf Betonprodukte für Umwelt, Kanal, Entwässerungs- und Verkehrstechnik spezialisiert und verfügt in jedem dieser Bereiche über jahrelange Erfahrung.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 10 | 16 contacts → | ||||
Indirect evidence “mjp Ziviltechniker GmbH| Geologie / Hydrogeologie /Geotechnik / Naturgefahren und Umwelt” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 11 | 15 contacts → | ||||
Strong evidence “HYDROPHIL – an international CONSULTING and ENGINEERING firm for WATER and ENVIRONMENT.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 12 | 13 contacts → | ||||
Partial evidence “cell is an innovative consulting, service and product provider for water.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 13 | 13 contacts → | ||||
Partial 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 21, 2026Thanks. The Data Team will review it. | |||||
| 14 | 12 contacts → | ||||
Indirect evidence “KEINER IST WIE WIR.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 15 | 12 contacts → | ||||
Indirect evidence “Interdisziplinäres Denken ist eine der wichtigsten Voraussetzungen für ausgereifte und effiziente Lösungen.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 16 | 12 contacts → | ||||
Partial evidence “SFC Umwelttechnik GmbH is a specialized company for process technologies in the field of water and wastewater treatment.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 17 | 11 contacts → | ||||
Indirect evidence “Parga steht für den modernen, nachhaltigen und schonenden Umgang mit der kostbaren Ressource Wasser.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 18 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 19 | 9 contacts → | ||||
Indirect evidence “IBBS ZT-GmbH konstruktiver Ingenieurbau – Verkehrsplanung – Infrastrukturentwicklung // Prüfingenieur, Planungs- und Baukoordination” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 20 | 7 contacts → | ||||
Partial evidence “Wir bei TRIAX sind erfahrene, kompetente und zuverlässige Ziviltechniker, Tragwerksplaner und Berater – mit ganzheitlichem, gebündeltem Experten und Engineering Know-how.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 21 | 7 contacts → | ||||
Indirect evidence “Die integral Ziviltechniker GmbH beschäftigt mehr als 40 hoch spezialisierte MitarbeiterInnen.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 22 | 6 contacts → | ||||
Indirect evidence “Die ibg ZT GmbH ist ein Zivilingenieurbüro für Geologie, Geotechnik und Wasserbau mit Sitz in Sattendorf am Ossiacher See.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 23 | 5 contacts → | ||||
Indirect evidence “Unser Ziel ist es, für dein Projekt eine maßgeschneiderte Lösung zu finden und dadurch eine reibungslose Projektabwicklung zu gewährleisten.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 24 | 5 contacts → | ||||
Indirect evidence “RETTER & PARTNER ZT ist seit 1974 Ihr Ingenieurbüro in KREMS an der Donau.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 25 | 5 contacts → | ||||
Indirect evidence “Ingenieurbüro für Planung, Simulation und Hydraulik für die Bereiche Energietechnik, Haustechnik und Großwärmepumpen.” Source: RevenueBase Database · checked Sep 21, 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 engineering 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 engineering firms.
- Partial evidence
- Its own public description names part of water engineering firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name water engineering 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 100 water engineering firms based in Austria
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Water engineering firms based in Austria at a glance
As of Sep 21, 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 100 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 engineering 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 engineering 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 engineering 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 engineering 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, 327 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 21, 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 engineering 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 engineering firms are there based in Austria?
RevenueBase identified 100 water engineering 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?
Geoconsult Consulting Engineers, headquartered in Puch Bei Hallein, tops this list with the largest team on record.
Which city has the most water engineering firms?
Wien leads with 12 headquartered companies, followed by Innsbruck (8) and Graz (7).
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 327 verified decision-maker contacts tracked across these 100 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 21, 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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