The latest news from Eawag

According to the study, environmental pollution, such as from the spraying of pesticides, and habitat changes have a particularly negative impact on the number of species and the composition of species communities (Photo: Adobe Stock).
News
The devastating impact of humans on biodiversity
March 26, 2025

Not only are the numbers of species declining, but the composition of species communities is also changing. This is shown by a new study published in the journal “Nature”.

Laboratory set up in Bangladesh (Photo: Ferozur Rahaman).
News
Rural water quality labs are essential for public health
March 14, 2025

Laboratories play an important role in effective water quality monitoring. The Eawag department of Sanitation, Water and Solid Waste for Development (Sandec) is collaborating on the REACHLabs project, which is analysing the effectiveness of fit-for-purpose (FFP) laboratories in rural areas of low- and middle-income countries. FFP labs are laboratories designed to meet specific local operational and management needs of rural water supplies.

The discharge fluctuations due to hydropeaking are clearly visible along the banks of the River Saane in the Canton of Fribourg. The light line in the water shows the water level during a low-flow phase, while the peak flow maximum is also clearly visible from the wetted part of the gravel bank (Photo: Christine Weber).
News
Promoting the compatibility of hydropower and ...
March 11, 2025

Storage hydropower plants contribute to the energy transition, but also affect river ecosystems. Sustainable management should not only account for individual hydropeaking events, but also their cumulative effects.

The time is ripe for an “ecology of molecules”, in which the interactions between individual organic molecules and the organisms in ecosystems are researched (Photo: Adobe Stock).
News
Understanding how molecules and ecosystems interact
March 7, 2025

New methods are making it possible to gain a more precise understanding of the role of organic molecules in the functioning of ecosystems. Researchers from Eawag and University of Zurich are therefore calling for a new “ecology of molecules”.

Newly elected Professor of Hydrology and River Systems at ETH and Eawag: Paola Passalacqua (Photo: Andre Leroux).
News
Eawag strengthens hydrology expertise
March 6, 2025

For a long time, Eawag's research focus was primarily on water quality. Questions relating to hydrology, bed load or flooding tend to be investigated at WSL or ETH. Eawag is now strengthening its expertise in this area. Today, the ETH Board appointed hydrologist Paola Passalacqua as joint professor at the Department of Civil, Environmental and Geomatic Engineering and at Eawag.

LinkedIn
Successfull Blue Summit
February 18, 2025

Last week, the ‘Blue Summit Switzerland’ water conference was held at Reichenau Castle. Themed ‘Switzerland's water reservoir also needs new solutions!’, more than 100 participants, including 20 national and cantonal politicians, attended.

Common barbel (Barbus barbus) and chub (Squalius cephalus) were evaluated in the study as representative species of fish communities in Swiss rivers (Photo: Eawag, M. Franco).
News
Biochemical signatures to predict how chemical pollution ...
February 13, 2025

Each year, tens of thousands of chemicals enter the market and ultimately the environment. While most of these compounds undergo safety testing before approval, their long-term effects on wildlife remain difficult to predict. To better estimate their potential threat for ecosystems, researchers at Eawag have explored biochemical signatures that indicate the level of chemical stress suffered by fish.

The alternative method of assessing the cleaning performance of small wastewater treatment plants for mountain huts using potassium as a tracer is currently being validated by measurements at Chamanna Cluozza and other mountain huts (Photo: Adobe Stock).
News
A fairer assessment of wastewater treatment in mountain ...
February 12, 2025

The conditions in mountain huts often make it difficult and impractical to meet the requirements for wastewater treatment. A new approach to assessing cleaning performance could change that.

Research team taking fish samples in the Langete river using the electrofishing method (Photo: Dario Josi).
Interview
Two new fish species discovered in Swiss waters
February 11, 2025

The public can take part in a survey to decide on the names of two fish species discovered by Bárbara Calegari and her colleagues. In this interview, the biologist explains where they live and how to make the diversity of our waters visible.

Elena Gimmi with ETH Rector Günther Dissertori (Photo: Alessandro della Bella).
News
ETH Medal for Elena Gimmi
January 29, 2025

Elena Gimmi received an ETH Medal for her dissertation on the influence of bacterial “bodyguards” on the co-evolution of the black bean aphid and its natural enemy the parasitoid wasp.

LinkedIn
Interpreting traces of arsenic in rain
January 9, 2025

On the Pic du Midi in the Pyrenees, ETH researchers have analysed particulate matter, clouds and rainwater for traces of arsenic. Using newly developed measurement methods, they have elucidated the transport pathways of the environmental toxin in the atmosphere.

Publication
How inter- and transdisciplinary integration will fail ...
January 7, 2025

A series of cartoons is intended to provide food for thought across disciplines in a humorous way and invite discussion.

LinkedIn
11th International Steven Hoogendijk Award (ISHA) goes ...
September 26, 2024

Last week, the 11th International Steven Hoogendijk Award (ISHA) of the “Batavian Society of Experimental Philosophy” was awarded to Eawag researcher and fresh Head of Department Linda Strande.