News Portal

June 13, 2019

Some insecticides, such as the neonicotinoids, have an effect on the nervous systems of organisms. But not only, as shown by the results of a new study in which Eawag scientists took part. And: the resulting damage can be very different, depending on the species of fish. Read more

May 29, 2019

Climate change will also have an effect on the surface waters and aquatic ecosystems of Switzerland. The extent of this effect has now been examined by Eawag researchers in a synthesis report commissioned by FOEN. All in all, it will be possible to maintain the high quality of Swiss waters through management and adaptation, however, this will entail higher costs, say the authors of the report. Read more

April 25, 2019

For the first time ever, a toxicity test with cultured gill cell lines from fish has been ISO-certified. The test is used to determine the acute toxicity of water samples and chemicals to fish. This is an important milestone because there is a lack of recognised alternatives to experiments with live fish. Read more

April 2, 2019

Two studies by Eawag and the Ecotox Centre have once again shown that surface waters in agricultural catchment areas are heavily contaminated with plant protection products. Concentrations of individual substances persisting for several months pose a risk of chronic toxicity and, for extended periods, exceed the levels at which a risk of acute toxicity exists for aquatic plants and organisms. In most of the samples, 30 or more different active ingredients were detected. Studies of stream biodiversity and bioassays confirmed the threat posed by these mixtures of substances. Read more

March 26, 2019

Freshwater lakes are teeming with blue-green algae that produce a heady cocktail of substances. Little is known as yet about the health risks associated with these substances, although a review of the literature by Eawag scientist Elisabeth Janssen has now revealed some potentially harmful effects. Read more

March 14, 2019

A new device developed at Eawag now allows Scientists to determine whether, and to what extent, fragrances in the environment are absorbed in fish without using animals. This is possible thanks to the use of a mirror-polished stainless steel chamber and a permeable membrane with a layer of intestinal fish cells. Read more

March 4, 2019

A new study by an interdisciplinary team from Eawag has shown that substances from agriculture affect living organisms in rivers and streams to a greater extent than treated wastewater, which has less impact on the species composition of microorganisms.  Read more