Company lists · Data refreshed September 2026

Top 25 Environmental consulting companies based in Switzerland

Name: Environmental consulting 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 229 companies tracked

RevenueBase identified 229 environmental consulting companies headquartered in Switzerland as of September 2026 and tracks 2,679 professional contacts across them, including 1,131 with verified work emails. Zurich is the largest hub.

This list covers environmental consulting 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

229Companies

2,679Contacts tracked

1,131Verified emails

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The 25 largest environmental consulting companies based in Switzerland

Ranked by team size

Top 25 of 229 environmental consulting 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 environmental consulting 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	Holinger	Indirect evidence	Liestal, SwitzerlandHQ checked Sep 19, 2026	501-1,000	265 contacts →
	Indirect evidence “For over 90 years, HOLINGER has been solving engineering and scientific tasks in various specialist areas related to the water cycle.” Source: RevenueBase Database · checked Sep 19, 2026
2	Jauslin Stebler AG	Indirect evidence	Muttenz, SwitzerlandHQ checked Sep 19, 2026	51-200	108 contacts →
	Indirect evidence “Die komplexen Rahmenbedingungen erfordern eine ganzheitliche Sicht der Probleme, kreative Prozesse und eine entsprechend eingespielte Organisation.” Source: RevenueBase Database · checked Sep 19, 2026
3	Intep Integrale Planung Gmbh	Indirect evidence	Zurich, SwitzerlandHQ checked Sep 19, 2026	51-200	65 contacts →
	Indirect evidence “Intep ist eine interdisziplinäre Beratungs- und Forschungsunternehmung für Umwelt, Wirtschaft und Gesellschaft.” Source: RevenueBase Database · checked Sep 19, 2026
4	Econetta	Indirect evidence	Schlieren, SwitzerlandHQ checked Sep 19, 2026	51-200	55 contacts →
	Indirect evidence “Econetta ist ein führendes Schweizer Umweltberatungsunternehmen.” Source: RevenueBase Database · checked Sep 19, 2026
5	Biol Conseils	Indirect evidence	Lausanne, SwitzerlandHQ checked Sep 19, 2026	11-50	54 contacts →
	Indirect evidence “Fondé en 1985, biol conseils regroupe des ingénieurs de formations complémentaires dans les domaines de l’environnement et de l’aide à la décision.” Source: RevenueBase Database · checked Sep 19, 2026
6	Ecoservices	Indirect evidence	Carouge, SwitzerlandHQ checked Sep 19, 2026	11-50	47 contacts →
	Indirect evidence “Ecoservices SA offre des prestations d'ingénierie dans les domaines de l'environnement, de la santé-sécurité au travail et de l'amiante.” Source: RevenueBase Database · checked Sep 19, 2026
7	Ecosens AG	Indirect evidence	Wallisellen, SwitzerlandHQ checked Sep 19, 2026	51-200	40 contacts →
	Indirect evidence “Langjährige Erfahrung und Nähe zu aktuellen Entwicklungen in sämtlichen umweltrelevanten Fragestellungen machen Ecosens zum führenden Beratungsunternehmen.” Source: RevenueBase Database · checked Sep 19, 2026
8	Prona Romandie SA	Partial evidence	Yverdon-les-bains, SwitzerlandHQ checked Sep 19, 2026	11-50	37 contacts →
	Partial evidence “Prona Romandie SA provides environmental engineering and health and safety services.” Source: RevenueBase Database · checked Sep 19, 2026
9	Jäckli Geologie AG	Indirect evidence	8048 Zürich, SwitzerlandHQ checked Sep 19, 2026	51-200	36 contacts →
	Indirect evidence “Die Jäckli Geologie AG ist ein eigenständiges Schweizer Beratungsunternehmen mit verschiedenen Standorten in der Nord- und Zentralschweiz.” Source: RevenueBase Database · checked Sep 19, 2026
10	Ecotec Environnement SA	Partial evidence	Geneve, SwitzerlandHQ checked Sep 19, 2026	11-50	32 contacts →
	Partial evidence “ECOTEC Environnement SA is a renewables and environment company based out of Rue Francois-Ruchon 3, Geneve, Geneve, Switzerland.” Source: RevenueBase Database · checked Sep 19, 2026
11	Friedlipartner AG	Indirect evidence	Zurich, SwitzerlandHQ checked Sep 19, 2026	11-50	28 contacts →
	Indirect evidence “Wir beraten seit 1974 Bauherren und Planer in allen Fragen rund um den Baugrund.” Source: RevenueBase Database · checked Sep 19, 2026
12	Planikum AG	Indirect evidence	Zurich, SwitzerlandHQ checked Sep 19, 2026	11-50	23 contacts →
	Indirect evidence “planikum gestaltet zukunftsorientierte Lebensräume und Infrastrukturen für Stadt und Land.” Source: RevenueBase Database · checked Sep 19, 2026
13	Sieber Cassina Partner AG	Indirect evidence	Zurich, SwitzerlandHQ checked Sep 19, 2026	11-50	23 contacts →
	Indirect evidence “Unsere Dienstleistungen stehen oft im Spannungsfeld von Nutzungs- und Schutzinteressen.” Source: RevenueBase Database · checked Sep 19, 2026
14	Bachema AG	Indirect evidence	Schlieren, SwitzerlandHQ checked Sep 19, 2026	51-200	22 contacts →
	Indirect evidence “Wir bieten schnelle, verlässliche und unabhängige Umweltanalytik auf hohem technisch-wissenschaftlichem Niveau an, damit Sie fundierte Entscheidungen treffen und ihre Kunden…” Source: RevenueBase Database · checked Sep 19, 2026
15	Carbotech AG	Indirect evidence	Basel, SwitzerlandHQ checked Sep 19, 2026	11-50	21 contacts →
	Indirect evidence “Carbotech Inc.” Source: RevenueBase Database · checked Sep 19, 2026
16	WSP Suisse AG	Indirect evidence	Luzern, SwitzerlandHQ checked Sep 19, 2026	201-500	18 contacts →
	Indirect evidence “Seit über 130 Jahren wächst WSP kontinuierlich und ist heute auf der ganzen Welt vertreten.” Source: RevenueBase Database · checked Sep 19, 2026
17	Ingenias AG	Indirect evidence	Weinfelden, SwitzerlandHQ checked Sep 19, 2026	11-50	18 contacts →
	Indirect evidence “Ingenias ist Ihr Umwelt-Ingenieurbüro für anspruchsvolle Aufgaben in den Bereichen Umwelt, Wasser und Geologie.” Source: RevenueBase Database · checked Sep 19, 2026
18	Natura Biologie Appliquée SA	Indirect evidence	Les Reussilles, SwitzerlandHQ checked Sep 19, 2026	11-50	16 contacts →
	Indirect evidence “Ingénierie de l’environnement du diagnostic à la réalisation” Source: RevenueBase Database · checked Sep 19, 2026
19	Novacity Solutions Immobilières	Indirect evidence	Carouge, SwitzerlandHQ checked Sep 19, 2026	11-50	15 contacts →
	Indirect evidence “Spécialisée dans les solutions immobilières du domaine bâti existant, NOVACITY Solutions Immobilières SA est destinée à mener des analyses et diagnostics de matières polluantes…” Source: RevenueBase Database · checked Sep 19, 2026
20	ILU AG	Indirect evidence	Uster, SwitzerlandHQ checked Sep 19, 2026	11-50	14 contacts →
	Indirect evidence “ilu AG Mit Begeisterung planen wir unsere zukünftigen Tätigkeiten, wobei wir uns gleichermassen dem Erfolg unserer Kunden wie auch unser aller Verantwortung gegenüber der Umwelt…” Source: RevenueBase Database · checked Sep 19, 2026
21	Agrexis AG	Partial evidence	Basel, SwitzerlandHQ checked Sep 19, 2026	11-50	14 contacts →
	Partial evidence “AGREXIS is an independent consulting company offering expert and regulatory consulting to the Agrochemical and Biocidal industry.” Source: RevenueBase Database · checked Sep 19, 2026
22	Drosera Ecologie Appliquée SA	Indirect evidence	Sion, SwitzerlandHQ checked Sep 19, 2026	11-50	14 contacts →
	Indirect evidence “Fondé en 1991, le bureau d’étude Drosera Ecologie Appliquée SA met au service des collectivités publiques et des entreprises privées ses compétences dans le domaine de…” Source: RevenueBase Database · checked Sep 19, 2026
23	Eichenberger AG	Indirect evidence	Zürich, SwitzerlandHQ checked Sep 19, 2026	11-50	13 contacts →
	Indirect evidence “Die Eichenberger AG (EAG) erbringt in den nachfolgenden Fachbereichen seit 1940 innovative, breitgefächerte und nachhaltige Dienstleistungen: Allgemeiner Tiefbau- Strassen- und…” Source: RevenueBase Database · checked Sep 19, 2026
24	Ipso ECO AG	Indirect evidence	Rothenburg, SwitzerlandHQ checked Sep 19, 2026	11-50	12 contacts →
	Indirect evidence “Wir sind ein unabhängiges Beratungsunternehmen für Umweltfragen.” Source: RevenueBase Database · checked Sep 19, 2026
25	MGI Ingénieurs	Indirect evidence	Châtel-st-denis, SwitzerlandHQ checked Sep 19, 2026	11-50	12 contacts →
	Indirect evidence “MGI ingénieurs SA est un bureau d’ingénieurs conseils en génie-civil et environnement.” 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: environmental consulting 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 environmental consulting companies.
Partial evidence: Its own public description names part of environmental consulting companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name environmental consulting 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 229 environmental consulting companies based in Switzerland

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Environmental consulting companies based in Switzerland at a glance

As of Sep 19, 2026

42.2%Verified-email coverage

11.7Average contacts per company

1-10Median size (employees)

10.0%Largest-city concentration · Zurich

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

151

11-50

51-200

201-500

501-1,000

1,001-5,000

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 229 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 environmental consulting 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 “environmental consulting 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 environmental consulting 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 environmental consulting 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, 1,131 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 environmental consulting 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 environmental consulting companies are there based in Switzerland?

RevenueBase identified 229 environmental consulting 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?

Holinger, headquartered in Liestal Basel, tops this list with the largest team on record.

Which city has the most environmental consulting companies?

Zurich leads with 23 headquartered companies, followed by Bern (10) and Lausanne (8).

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 1,131 verified decision-maker contacts tracked across these 229 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.