Company lists · Data refreshed September 2026

Top 15 Water treatment companies based in Austria

RevenueBase identified 35 water treatment companies headquartered in Austria as of September 2026 and tracks 412 professional contacts across them, including 154 with verified work emails and 10 with mobile numbers. Wien is the largest hub.

This list covers water treatment companies 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 7, 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 7, 2026 86% judged on-target in blind review
35Companies
412Contacts tracked
154Verified emails
10Mobile numbers
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The 15 largest water treatment companies based in Austria

Ranked by team size
Top 15 of 35 water treatment companies based in Austria, ranked by team size, largest first. Data refreshed Sep 7, 2026. RevenueBase Smart Search rates how each company's information relates to water 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceMondsee, AustriaHQ checked Sep 7, 20265,001-10,00082 contacts →

“The Best Water Technology Group (BWT) is the market leader for water technology.”

Source: company website · checked Sep 7, 2026
2Partial evidenceRottenbach, AustriaHQ checked Sep 7, 2026201-50052 contacts →

“The VTA Group specialises in optimising municipal and industrial sewage treatment plants.”

Source: company website · checked Sep 7, 2026
3Strong evidenceAmstetten, AustriaHQ checked Sep 7, 202651-20030 contacts →

“The international operating GIS Aqua group is a reliable and well-known partner in the water treatment plant industry.”

Source: company website · checked Sep 7, 2026
4Strong evidenceSchwechat, AustriaHQ checked Sep 7, 202611-5027 contacts →

“We are specialized in designing, manufacturing and maintaining water treatment systems for all major industries.”

Source: company website · checked Sep 7, 2026
5Strong evidenceLeobersdorf, AustriaHQ checked Sep 7, 202651-20025 contacts →

“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: company website · checked Sep 7, 2026
6Indirect evidenceStainz, AustriaHQ checked Sep 7, 202611-5013 contacts →

“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: company website · checked Sep 7, 2026
7Strong evidenceSalzburg, AustriaHQ checked Sep 7, 202611-5012 contacts →

“SFC Umwelttechnik GmbH is a specialized company for process technologies in the field of water and wastewater treatment.”

Source: company website · checked Sep 7, 2026
8Partial evidenceSchörfling Am Attersee, AustriaHQ checked Sep 7, 202611-5010 contacts →

“Manufacturer of UV disinfection systems for drinking water supply, industrial applications, pharma and aquaculture”

Source: company website · checked Sep 7, 2026
9Indirect evidenceVienna, AustriaHQ checked Sep 7, 202611-5010 contacts →

“Welcome to VULCASCOT!”

Source: company website · checked Sep 7, 2026
10Partial evidenceSt. Veit An Der Glan, AustriaHQ checked Sep 7, 20261-105 contacts →

“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: company website · checked Sep 7, 2026
11Indirect evidenceGraz, AustriaHQ checked Sep 7, 202611-504 contacts →

“Die Wastewater Solutions Group (WWSG) plant, konstruiert, installiert und betreibt Wassermanagementsysteme, die wirtschaftliche und ökologische Vorteile bieten.”

Source: company website · checked Sep 7, 2026
12Indirect evidenceGraz, AustriaHQ checked Sep 7, 202611-502 contacts →

“Welcome to ROTREAT Abwasserreinigung GmbH, a leading provider of advanced membrane filtration plants since our establishment in 1993.”

Source: company website · checked Sep 7, 2026
13Indirect evidenceWien, AustriaHQ checked Sep 7, 202611-502 contacts →

“BVS bietet alle Arten von Wasseraufbereitungsanlagen für Gewerbe, Industrie, Gesundheitswesen und Kommunen an.”

Source: company website · checked Sep 7, 2026
14Indirect evidenceWien, AustriaHQ checked Sep 7, 20261-102 contacts →

“Grünbeck ist Ihr kompetenter Ansprechpartner für Wasseraufbereitung, Trinkwasser, Brauchwasser und Abwasser.”

Source: company website · checked Sep 7, 2026
15Indirect evidenceWels, AustriaHQ checked Sep 7, 20261-101 contacts →

“ACON Environment GmbH is a vibrant and international company, situated in Wels, Austria.”

Source: company website · checked Sep 7, 2026

Showing 15 of 35 water treatment companies based in Austria

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Water treatment companies based in Austria at a glance

As of Sep 7, 2026
37.4%Verified-email coverage
2.4%Mobile-number coverage
11.8Average contacts per company
11-50Median size (employees)
17.1%Largest-city concentration · Wien
Sep 7, 2026Page data refreshed

Companies by employee count

1-10
11
11-50
14
51-200
5
201-500
2
501-1,000
1
1,001-5,000
1
5,001-10,000
1

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

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 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 Austria whose own description of what they do matches “water 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 water 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 water treatment companies, 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, 154 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 7, 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 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 water treatment companies are there based in Austria?

RevenueBase identified 35 water treatment companies 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 companies?

Wien leads with 6 headquartered companies, followed by Graz (3) and Leobersdorf (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 154 verified decision-maker contacts tracked across these 35 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 7, 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.