Company lists · Data refreshed September 2026
Top 25 Drainage contractors based in Switzerland
RevenueBase identified 70 drainage contractors headquartered in Switzerland as of September 2026 and tracks 333 professional contacts across them, including 128 with verified work emails. Zurich is the largest hub.
This list covers drainage contractors 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 16, 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 drainage contractors based in Switzerland
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 60 contacts → | ||||
Indirect evidence “Unser Kerngeschäft ist die Linienentwässerung mit sämtlichen Systemkomponenten, die für nachhaltig funktionierende Entwässerungslösungen von Bedeutung sind.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 2 | 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 16, 2026Thanks. The Data Team will review it. | |||||
| 3 | 22 contacts → | ||||
Indirect evidence “Wir sorgen dafür, dass alles dorthin fliesst, wo es soll – sicher und ohne Verluste.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 4 | 20 contacts → | ||||
Indirect evidence “Die Kanalservice Gruppe (KSG) ist ein schnell wachsender und führender Komplettanbieter im Bereich der Instandhaltung von kritischen Infrastrukturen in Europa.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 5 | 17 contacts → | ||||
Indirect evidence “Seit 1954 besteht das Unternehmen, das einst von der Familie Walter Fretz gegründet wurde.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 6 | 15 contacts → | ||||
Indirect evidence “Mit unseren Unternehmen sind wir Profis rund um den Unterhalt und die Sanierung von Kanalisationen, der Reinigung und Instandhaltung von Flächen sowie der Reinigung von…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 7 | 10 contacts → | ||||
Indirect evidence “Willkommen bei KFS Kanal-Service AG!” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 8 | 9 contacts → | ||||
Indirect evidence “KIBAG Kanaldienstleistungen.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 9 | 8 contacts → | ||||
Indirect evidence “Die ASA-Service AG ist ein führender Ostschweizer Anbieter für folgende Bereiche:Kanal- und Rohrreinigung / Mobiltoiletten-Service / Container-Service / PE-VorfabrikationKanal-…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 10 | 8 contacts → | ||||
Indirect evidence “Die Marquis AG Kanalservice ist ein traditionelles Familienunternehmen aus der Nordwestschweiz, welches sich im Laufe der Jahre zum führenden Anbieter im Bereich der…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 11 | 6 contacts → | ||||
Indirect evidence “Wir sind Ihr kompetenter Partner für alle Fragen rund um die Kanalreinigung und Kanalsanierung.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 12 | 5 contacts → | ||||
Indirect evidence “Entwässerungstechnik vom Dach bis zum Keller Die Schaco AG ist seit 1990 mit ihren Entwässerungslösungen vom Dach bis zum Keller der Partner des planenden und ausführenden…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 13 | 5 contacts → | ||||
Indirect evidence “Nach knapp 20 Jahren Berufserfahrungen in verschiedenen Unternehmen der Zentralschweiz hat sich Reto Zweili im Herbst 2017 entschieden, sein eigenes Unternehmen im Bereich der…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 14 | 5 contacts → | ||||
Indirect evidence “Der Werterhalt ihrer Liegenschaftsentwässerung geht bei der RoKaTech AG mit einem hohen Umweltbewusstsein einher.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 15 | 4 contacts → | ||||
Indirect evidence “Seit über 20 Jahren unterstützen wir mit knapp 50 ständig geschulten und erfahrenen Mitarbeiter:innen, sowie mit unseren modernen Spezialgeräten unsere Kundschaft im Bereich des…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 16 | 4 contacts → | ||||
Indirect evidence “Grâce à l'expérience dans le domaine sanitaire des différents membres de l'équipe, G&G sanitaire SA peut assurer des services de bureau d’ingénieur, mener à bien des chantiers de…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 17 | 4 contacts → | ||||
Indirect evidence “ÜBER UNS 365 Tage rund um die Uhr ist die Firma Arnold Pfister AG Kanalreinigung und Entsorgung mit ihren Mitarbeitern für ihre Kunden im Einsatz.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 18 | 4 contacts → | ||||
Indirect evidence “Wir, die Zwicky Kanalreinigungen AG mit Sitz in Bäretswil ZH, sind im Bereich der Kanalreinigung tätig.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 19 | 3 contacts → | ||||
Indirect evidence “Avec une équipe qualifiée, engagée et équipée d’un matériel moderne, Ducret Frères SA met son expertise au service de l’assainissement et de l’entretien des canalisations sur la…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 20 | 2 contacts → | ||||
Indirect evidence “Wir planen, beraten, organisieren und begleiten die Arbeiten im Bereich der Siedlungsentwässerung.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 21 | 2 contacts → | ||||
Indirect evidence “Alles rund um Ihre Liegenschaftsentwässerung!” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 22 | 2 contacts → | ||||
Indirect evidence “Rohr- und Kanalreinigung, Kanal TV Inspektionen, Dichtheitsprüfungen,Rohr- und Kanalsanierung und Saugarbeiten” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 23 | 1 contacts → | ||||
Indirect evidence “Hiestand Sanitär - Ihr Fachbetrieb für sanitäre Anlagen.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 24 | 1 contacts → | ||||
Indirect evidence “Die Rail & Road AG Kanalservice ist ein Unternehmen der Marquis-Gruppe und spezialisiert auf leistungsstarke, innovative und effiziente Lösungen für alle…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 25 | 1 contacts → | ||||
Indirect evidence “Bondya ist Ihr Partner für Kanalsanierungs- und Kanalreinigungsmaterial.” Source: RevenueBase Database · checked Sep 16, 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: drainage contractors. 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 drainage contractors.
- Partial evidence
- Its own public description names part of drainage contractors, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name drainage contractors. 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 70 drainage contractors based in Switzerland
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Drainage contractors based in Switzerland at a glance
As of Sep 16, 2026Companies by employee count
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 70 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 drainage contractors, 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 “drainage contractors”. 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 drainage contractors), 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 drainage contractors, 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, 128 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 16, 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 drainage contractors, 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 drainage contractors are there based in Switzerland?
RevenueBase identified 70 drainage contractors 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?
ACO Schweiz, headquartered in Netstal, tops this list with the largest team on record.
Which city has the most drainage contractors?
Zurich leads with 7 headquartered companies, followed by Bern (2) and Dubendorf (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 128 verified decision-maker contacts tracked across these 70 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 16, 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.