Contact us


Business Unit Basic Chemicals
Räffelstrasse 12
8045 Zurich, Switzerland

Phone : +41 43 499 25 00
Fax : +41 43 499 25 01

Focus Topics

Industrial Chemicals


Wastewater treatment

Only decades ago, people could not swim carefree in lakes and rivers. Wastewaters in the form of municipal, commercial and industrial water were being dumped mostly untreated into the natural water bodies, heavily polluting them.

With the upgrading of municipal sewer systems, wastewater treatment plants and other wastewater disposal constructions, the wastewater and freshwater situation in Germany, Austria and Switzerland is very different today. Currently, more than 95 % of residents in these regions are connected to a treatment plant. The quality of swimming in natural water bodies has thus improved appreciably.

The removal of faecal matter from residential areas and its proper treatment are key contributors to hygiene within settled areas and for the general protection of waters. Careful separation of wastewater and drinking water must be guaranteed so that no pathogens can get into the drinking water and contaminate it.

While water quality has already greatly improved, there is still room for further improvement. Currently, our main challenges are micropollution, medicines, plant protection products, chemicals and hormones. We still have no convincing way of removing these from the wastewater and so they find their way into the environment. Thus, for good reason, funding is being put into researching new concepts for chemical-physical separation methods, and even the recovery of ingredients out of wastewaters.

Read more about the functionality of wastewater treatment plants in our chemworld issue 2019.



Meet us at the Swiss Bad 2020!


The  trade exhibition “Swiss Bad” will take place as usual at the Hotel…

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Apprenticeship at IMPAG

We offer a sound, practical and varied basic training.

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Take a look at our new logistics centre!

IMPAG Warehouse

In the new video you get exciting insights.

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Swimming pool season: Are you ready when it starts again?

Swimming Pool Chemicals

We are ready to support you even if the swimming pool season opens at short…

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Chlorates in Swimming Pool Water: not desirable

Chlorates in Pool Water

Article in the Swiss VHF-GSK-Bulletin; Article 01/2020

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Raw materials for disinfectants

Disinfectants are sought after

Two raw materials which are perfectly suited for the formulation of…

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Titanium dioxide: INEOS Pigments is new IMPAG Partner

Distribution of Titanium dioxide in Switerland and Liechtenstein 

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Supply Chain Update in the Context of Coronavirus (Covid-19)

The current pandemic and the associated state of emergency is a challenge for…

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Cataloge Basic Chemicals 2020

Range of Basic Chemicals

We are happy to present our new Basic Chemicals Catalogue 2020 (German)

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Moving review of Anniversary Year

film review

What a team – together unique!

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IMPAG receives silver status from Ecovadis

Ecovadis Silver Status

IMPAG Group has been awarded silver status by EcoVadis in recognition of its…

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