Company lists · Data refreshed October 2026

Top 25 Environmental treatment engineering firms based in Switzerland

Name: Environmental treatment engineering firms based in Switzerland
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 12, 2026 74 companies tracked

RevenueBase identified 74 company matches for environmental treatment engineering firms associated with Switzerland as of October 2026 and tracks 632 professional contacts across them, including 258 with verified work emails. Cham is the largest hub.

This list covers company matches for environmental treatment engineering firms associated with Switzerland, 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 October 12, 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 Oct 12, 2026 How this list was built

74Companies

632Contacts tracked

258Verified emails

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The 25 largest environmental treatment engineering firms based in Switzerland

Ranked by team size

Top 25 of 74 company matches for environmental treatment engineering firms based in Switzerland, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 12, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Häny AG	Exact match	Jona, SwitzerlandHQ recorded Oct 12, 2026	51-200	102 contacts →
	Exact match “Häny is an expert system provider of advanced, innovative and reliable pump solutions.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
2	Ecosens AG	Exact match	Wallisellen, SwitzerlandHQ recorded Oct 12, 2026	51-200	40 contacts →
	Exact match “Langjährige Erfahrung und Nähe zu aktuellen Entwicklungen in sämtlichen umweltrelevanten Fragestellungen machen Ecosens zum führenden Beratungsunternehmen.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
3	Troger SA	Exact match	Vésenaz, SwitzerlandHQ recorded Oct 12, 2026	51-200	27 contacts →
	Exact match “Fondée à Genève en 1961, Troger SA couvre l’ensemble des métiers de la gestion de l’eau et du gaz.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
4	Kuster Hager Gruppe	Exact match	Uznach, SwitzerlandHQ recorded Oct 12, 2026	51-200	26 contacts →
	Exact match “GEBÜNDELTES FACHWISSEN FÜR BAU, WASSER UND UMWELT Unter aktivem Einsatz der zweiten und dritten Generation der Inhaberfamilie bietet die KUSTER+HAGER Gruppe dank ihren…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
5	Techfina SA	Exact match	Winterthur, SwitzerlandHQ recorded Oct 12, 2026	11-50	21 contacts →
	Exact match “We build ready-to-use treatment plants for drinking water and wastewater.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
6	Carbotech AG	Exact match	Basel, SwitzerlandHQ recorded Oct 12, 2026	11-50	21 contacts →
	Exact match “Carbotech Inc.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
7	SPE Tech AG	Exact match	Frauenkappelen, SwitzerlandHQ recorded Oct 12, 2026	11-50	20 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
8	Natura Biologie Appliquée SA	Exact match	Les Reussilles, SwitzerlandHQ recorded Oct 12, 2026	11-50	19 contacts →
	Exact match “Ingénierie de l’environnement du diagnostic à la réalisation” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
9	Ingenias AG	Exact match	Weinfelden, SwitzerlandHQ recorded Oct 12, 2026	11-50	19 contacts →
	Exact match “Ingenias ist Ihr Umwelt-Ingenieurbüro für anspruchsvolle Aufgaben in den Bereichen Umwelt, Wasser und Geologie.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
10	Burkhalter Wassertechnik AG	Exact match	Worblaufen, SwitzerlandHQ recorded Oct 12, 2026	51-200	14 contacts →
	Exact match “Die Wasseraufbereitungstechnik ist unsere Kernkompetenz – und das seit 1975.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
11	Heusser Water Solutions AG	Exact match	Cham, SwitzerlandHQ recorded Oct 12, 2026	51-200	13 contacts →
	Exact match “Die Heusser Water Solutions AG steht für Innovationskraft auf der soliden Grundlage jahrelanger Erfahrung, starker Partner und erprobten Technologien.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
12	Bureau D'études Impact SA	Exact match	Sion, SwitzerlandHQ recorded Oct 12, 2026	11-50	12 contacts →
	Exact match “Depuis sa création en 1986, le bureau d'études Impact SA a réalisé et coordonné de nombreux dossiers d'impact sur l'environnement.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
13	BPP Ingenieure AG	Exact match	Brunnen, SwitzerlandHQ recorded Oct 12, 2026	11-50	11 contacts →
	Exact match “Wer sind wir?” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
14	Reatech AG	Exact match	Rotkreuz, SwitzerlandHQ recorded Oct 12, 2026	11-50	10 contacts →
	Exact match “Wir planen und bauen Umwelttechnik-Anlagen.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
15	Biotec Biologie Appliquée SA Suisse	Exact match	Delémont, SwitzerlandHQ recorded Oct 12, 2026	1-10	9 contacts →
	Exact match “Bureau technique et d’études en génie de l’environnement regroupant des spécialistes en techniques végétales, revitalisations de cours d’eau, gestion des milieux naturels, études…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
16	Aquaren Gmbh	Exact match	Obergerlafingen, SwitzerlandHQ recorded Oct 12, 2026	11-50	9 contacts →
	Exact match “Die Aquaren GmbH steht für innovative und nachhaltige ökologische Lösungen im Bereich der Frisch- und Abwasseraufbereitung.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
17	RLJ Ingénieurs Conseils SA	Exact match	Penthalaz, SwitzerlandHQ recorded Oct 12, 2026	11-50	9 contacts →
	Exact match “Le bureau r l j.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
18	TK Consult AG	Exact match	Zurich, SwitzerlandHQ recorded Oct 12, 2026	1-10	8 contacts →
	Exact match “TK Consult AG offers an extensive service catalog in environmental and hydraulic engineering consulting, with special emphasis on the numerical modelling of hydrogeology…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
19	Rheno AG	Exact match	Dietikon, SwitzerlandHQ recorded Oct 12, 2026	11-50	8 contacts →
	Exact match “Rheno Umwelttechnik AG is an environmental services company based out of 15 Giessenstrasse, Schlieren, Zurich, Switzerland.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
20	RC Ingénierie SA RCI	Exact match	Le Grand-saconnex, SwitzerlandHQ recorded Oct 12, 2026	1-10	7 contacts →
	Exact match “RC Ingénierie SA», fondée en 2017, poursuit le développement des activités et prestations assurées par l’entreprise Roland Cottier, ingénieur-conseil, entreprise fondée en 2006…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
21	Aquaswiss System	Exact match	Plan Les Ouates, SwitzerlandHQ recorded Oct 12, 2026	1-10	7 contacts →
	Exact match “La société AquaSwiss System basée à Genève, s’est spécialisée dans la recherche et la commercialisation de technologies et systèmes innovant dans le traitement de l’eau, avec pour…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
22	ULI Lippuner AG Wasserconsulting	Exact match	Sargans, SwitzerlandHQ recorded Oct 12, 2026	1-10	6 contacts →
	Exact match “Wir sind ein führendes Ingenieurbüro spezialisiert im Bereich Wasser.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
23	Ecosafe Gunzenhauser AG	Exact match	Kaiseraugst, SwitzerlandHQ recorded Oct 12, 2026	1-10	6 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
24	ECO Alpin SA	Exact match	Celerina, SwitzerlandHQ recorded Oct 12, 2026	1-10	4 contacts →
	Exact match “Eco Alpin ist ein Umwelt-Ingenieurbüro, das sich auf die Verbindung von Naturwissenschaften, Raumplanung und Ingenieurwesen spezialisiert hat.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
25	Luigi Tunesi Ingegneria SA	Exact match	Lugano, SwitzerlandHQ recorded Oct 12, 2026	1-10	4 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “environmental treatment engineering firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 74 environmental treatment engineering firms based in Switzerland

See the full list, filter by size, metro and specialty, and access 258 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Environmental treatment engineering firms based in Switzerland at a glance

As of Oct 12, 2026

40.8%Verified-email coverage

8.5Average contacts per company

1-10Median size (employees)

4.1%Largest-city concentration · Cham

Oct 12, 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 74 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 Switzerland whose business descriptions match “environmental treatment engineering firms” 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 258 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 October 12, 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 “environmental treatment engineering firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many environmental treatment engineering firms are there based in Switzerland?

RevenueBase identified 74 company matches for environmental treatment engineering firms associated with Switzerland as of October 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?

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

Which city has the most environmental treatment engineering firms?

Cham leads with 3 company records, followed by Lausanne (3) and Chiasso (2).

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 258 professional contacts with verified work emails tracked across these 74 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 October 12, 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.