Company lists · Data refreshed September 2026

Top 25 Water treatment plant construction companies based in Switzerland

Name: Water treatment plant construction companies based in Switzerland
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 62 companies tracked

RevenueBase identified 62 water treatment plant construction companies headquartered in Switzerland as of September 2026 and tracks 477 professional contacts across them, including 226 with verified work emails. Cham is the largest hub.

This list covers water treatment plant construction companies headquartered in Switzerland, 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 19, 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 19, 2026 86% judged on-target in blind review

62Companies

477Contacts tracked

226Verified emails

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The 25 largest water treatment plant construction companies based in Switzerland

Ranked by team size

Top 25 of 62 water treatment plant construction companies based in Switzerland, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to water treatment plant construction 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Häny AG	Indirect evidence	Jona, SwitzerlandHQ checked Sep 19, 2026	51-200	99 contacts →
	Indirect evidence “Häny is an expert system provider of advanced, innovative and reliable pump solutions.” Source: RevenueBase Database · checked Sep 19, 2026
2	Heusser Water Solutions AG	Partial evidence	Cham, SwitzerlandHQ checked Sep 19, 2026	51-200	39 contacts →
	Partial evidence “Die Heusser Water Solutions AG steht für Innovationskraft auf der soliden Grundlage jahrelanger Erfahrung, starker Partner und erprobten Technologien.” Source: RevenueBase Database · checked Sep 19, 2026
3	Culligan Switzerland SA	Partial evidence	Le Mont-sur-lausanne, SwitzerlandHQ checked Sep 19, 2026	51-200	35 contacts →
	Partial evidence “Culligan Switzerland – Water you love.” Source: RevenueBase Database · checked Sep 19, 2026
4	Troger SA	Indirect evidence	Vésenaz, SwitzerlandHQ checked Sep 19, 2026	51-200	23 contacts →
	Indirect evidence “Fondée à Genève en 1961, Troger SA couvre l’ensemble des métiers de la gestion de l’eau et du gaz.” Source: RevenueBase Database · checked Sep 19, 2026
5	Techfina SA	Strong evidence	Winterthur, SwitzerlandHQ checked Sep 19, 2026	11-50	20 contacts →
	Strong evidence “We build ready-to-use treatment plants for drinking water and wastewater.” Source: RevenueBase Database · checked Sep 19, 2026
6	SPE Tech AG	Indirect evidence	Frauenkappelen, SwitzerlandHQ checked Sep 19, 2026	11-50	17 contacts →
	Indirect evidence “Die SH+E GROUP bietet Planung, Bau und Service von Anlagen zur Behandlung von Wasser und Abwasser in Kommunen und der Industrie inklusive von Ver- und Entsorgungssystemen.” Source: RevenueBase Database · checked Sep 19, 2026
7	Romag Aquacare AG	Partial evidence	Düdingen, SwitzerlandHQ checked Sep 19, 2026	51-200	16 contacts →
	Partial evidence “Wherever people drink and pollute water, we provide solutions.” Source: RevenueBase Database · checked Sep 19, 2026
8	Prorheno AG	Indirect evidence	Basel, SwitzerlandHQ checked Sep 19, 2026	11-50	16 contacts →
	Indirect evidence “Die ProRheno AG reinigt seit 1982 die Abwässer von Haushalten, Gewerbebetrieben und Industrie aus der Region Basel.” Source: RevenueBase Database · checked Sep 19, 2026
9	Burkhalter Wassertechnik AG	Indirect evidence	Worblaufen, SwitzerlandHQ checked Sep 19, 2026	51-200	14 contacts →
	Indirect evidence “Die Wasseraufbereitungstechnik ist unsere Kernkompetenz – und das seit 1975.” Source: RevenueBase Database · checked Sep 19, 2026
10	Alpha Wassertechnik AG	Partial evidence	Nidau, SwitzerlandHQ checked Sep 19, 2026	11-50	12 contacts →
	Partial evidence “ALPHA WasserTechnik AG est une société suisse active, depuis 1960, dans la conception, la construction et la commercialisation d’installations de traitement d’eaux usées urbaines…” Source: RevenueBase Database · checked Sep 19, 2026
11	Rheno AG	Indirect evidence	Dietikon, SwitzerlandHQ checked Sep 19, 2026	11-50	10 contacts →
	Indirect evidence “Rheno Umwelttechnik AG is an environmental services company based out of 15 Giessenstrasse, Schlieren, Zurich, Switzerland.” Source: RevenueBase Database · checked Sep 19, 2026
12	Frei Aquaservice AG	Indirect evidence	Aesch (basel-land), SwitzerlandHQ checked Sep 19, 2026	11-50	9 contacts →
	Indirect evidence “Das Leistungsangebot der Frei AquaService AG umfasst alle gängigen Technologien der Wasseraufbereitung.” Source: RevenueBase Database · checked Sep 19, 2026
13	Bafilco AG	Indirect evidence	Winterthur, SwitzerlandHQ checked Sep 19, 2026	11-50	9 contacts →
	Indirect evidence “Seit 1978 baut die bafilco ag Wasseraufbereitungsanlagen für öffentliche Schwimmbäder.” Source: RevenueBase Database · checked Sep 19, 2026
14	United Waters International AG	Partial evidence	Zug, SwitzerlandHQ checked Sep 19, 2026	11-50	8 contacts →
	Partial evidence “UWI has developed and patented a pioneering, award-winning and cost-efficient biological drinking water purification technology in 20’ and 40’ foot containerised systems under the…” Source: RevenueBase Database · checked Sep 19, 2026
15	Aquaren Gmbh	Indirect evidence	Obergerlafingen, SwitzerlandHQ checked Sep 19, 2026	11-50	8 contacts →
	Indirect evidence “Die Aquaren GmbH steht für innovative und nachhaltige ökologische Lösungen im Bereich der Frisch- und Abwasseraufbereitung.” Source: RevenueBase Database · checked Sep 19, 2026
16	Stereau Suisse SA	Partial evidence	Yverdon-les-bains, SwitzerlandHQ checked Sep 19, 2026	1-10	8 contacts →
	Partial evidence “Stereau Suisse SA, filiale du groupe SAUR, est une entreprise spécialiste de la conception et de la construction de grands ouvrages liés au cycle de l’eau (usine de production…” Source: RevenueBase Database · checked Sep 19, 2026
17	ULI Lippuner AG Wasserconsulting	Indirect evidence	Sargans, SwitzerlandHQ checked Sep 19, 2026	1-10	7 contacts →
	Indirect evidence “Wir sind ein führendes Ingenieurbüro spezialisiert im Bereich Wasser.” Source: RevenueBase Database · checked Sep 19, 2026
18	W. Frei AG Klingnau	Indirect evidence	Klingnau, SwitzerlandHQ checked Sep 19, 2026	11-50	7 contacts →
	Indirect evidence “Kläranlagen-Ausrüstungen: Hebewerke, Rechenanlagen, Sandwaschanlagen, Brückenräumer, Kettenräumer, Belüftung und Biologie, Schlamm-Entwässerungspressen, Gasanlagen, Metallbau.” Source: RevenueBase Database · checked Sep 19, 2026
19	Ensola Wasser - Labor - GAS	Indirect evidence	Urdorf, SwitzerlandHQ checked Sep 19, 2026	11-50	4 contacts →
	Indirect evidence “ENSOLA AG ist ein Dienstleister in der Wassertechnik und Industrie mit Tochterunternehmen in Österreich.” Source: RevenueBase Database · checked Sep 19, 2026
20	Aqua Gontier AG	Indirect evidence	Oberwil, SwitzerlandHQ checked Sep 19, 2026	11-50	4 contacts →
	Indirect evidence “AQUA GONTIER bietet Gesamtlösungen im Bereich der Wasseraufbereitung – und eine verlässliche Partnerschaft für Hausbesitzer, Labors, Gesundheitspraxen, Restaurants, Industrie…” Source: RevenueBase Database · checked Sep 19, 2026
21	Waterconsult SA	Indirect evidence	Cudrefin, SwitzerlandHQ checked Sep 19, 2026	1-10	3 contacts →
	Indirect evidence “Spécialiste suisse romand depuis 2012, Waterconsult conçoit, installe et maintient des systèmes de traitement de l’eau sur mesure.” Source: RevenueBase Database · checked Sep 19, 2026
22	Burger Engineering AG	Indirect evidence	Burgdorf, SwitzerlandHQ checked Sep 19, 2026	11-50	3 contacts →
	Indirect evidence “Fachplaner und Anlagenbauer für alle Fragen zu Abwasser aus Industrie und Gewerbe.” Source: RevenueBase Database · checked Sep 19, 2026
23	Acque E Chimici SA	Indirect evidence	Paradiso, SwitzerlandHQ checked Sep 19, 2026	1-10	2 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
24	Convert Green Sagl	Strong evidence	Cadempino, SwitzerlandHQ checked Sep 19, 2026	1-10	2 contacts →
	Strong evidence “We offer advanced water treatment solutions and innovative, ecological solutions in Switzerland: lamella separators, Kazuba toilets, wastewater treatment, treatment systems for…” Source: RevenueBase Database · checked Sep 19, 2026
25	Will Of Water Gmbh	Partial evidence	Zürich, SwitzerlandHQ checked Sep 19, 2026	1-10	1 contacts →
	Partial evidence “At Will of Water, we’re dedicated to transforming the way the world accesses and consumes water.” Source: RevenueBase Database · checked Sep 19, 2026

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 plant construction companies. 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 plant construction companies.
Partial evidence: Its own public description names part of water treatment plant construction companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name water treatment plant construction companies. 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 62 water treatment plant construction companies based in Switzerland

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Water treatment plant construction companies based in Switzerland at a glance

As of Sep 19, 2026

47.4%Verified-email coverage

7.7Average contacts per company

1-10Median size (employees)

6.5%Largest-city concentration · Cham

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

Email recency for this list is measured worldwide rather than for Switzerland, so it is reported there. Company counts and contact totals on this page are exact for Switzerland, over 62 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 plant construction 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 Switzerland whose own description of what they do matches “water treatment plant construction 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 plant construction 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 plant construction companies, and records with no verified work email. Companies headquartered outside Switzerland 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, 226 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 19, 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 plant construction 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 plant construction companies are there based in Switzerland?

RevenueBase identified 62 water treatment plant construction companies headquartered in Switzerland 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?

Häny AG, headquartered in Jona, tops this list with the largest team on record.

Which city has the most water treatment plant construction companies?

Cham leads with 4 headquartered companies, followed by Lausanne (3) and Jona (2).

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 226 verified decision-maker contacts tracked across these 62 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 19, 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.