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Photo: Eawag, Florence Metz
November 14, 2016

The “Regional Water Supply for Basel-Landschaft 21” project, which was started in 2013, culminated today in a media conference in Liestal. Read more

Fig. 1: The blaze in Schweizerhalle resulted in catastrophic environmental pollution. Thirty years on, however, the overall picture in terms of water protection is a positive one.
October 31, 2016

On 1 November 1986, a chemical warehouse at Schweizerhalle near Basel was destroyed by a fire. Aquatic life in the Rhine suffered catastrophic damage as a result of inflows of toxic, red-coloured firefighting water. Read more

Ozone generator at a WWTP. (Photo: Urs von Gunten)
October 25, 2016

In the coming years, around a hundred wastewater treatment plants (WWTPs) across Switzerland are to be upgraded with an additional treatment step in order to eliminate micropollutants. The method of choice is often ozonation. Read more

Maldi-MSI imaging method visualises cocaine accumulation in zebrafish.
September 29, 2016

A study by Eawag and Zurich University researchers using a new imaging method has revealed that, surprisingly, cocaine accumulates in the eyes of zebrafish. The findings indicate that chemicals – especially psychoactive drugs – need to be assessed quite differently with waterborne exposure than, for example, when pharmaceutical substances are tested in mice. In particular, the uptake mechanisms and effects of cocaine in fish cannot simply be transferred to mammals or humans. Read more

Biofilms – the slimy layer of microorganisms covering the bottom of streams – serve important ecosystem functions. Photo: Jörg Hemmer
May 25, 2016

Biofilms are complex communities of microorganisms such as bacteria or algae. In aquatic ecosystems, they serve essential functions, e.g. as a food resource. They also play an important role in wastewater treatment and in biofuel production. Read more

Single K. oxytoca cells. This images, generated using a NanoSIMS, shows the enrichment of the cells with heavy nitrogen (15N) after being fed with it. (Copyright: Frank Schreiber)
May 9, 2016

No two bacteria are identical – even when they are genetically the same. A new study reveals the conditions under which bacteria become individualists and how they help their colony grow when times get tough. Read more

Weltweit beziehen 300 Millionen Menschen ihr Wasser aus Grundwasservorräten, die stark mit Arsen oder Fluorid belastet sind.
April 28, 2016

The interactive and free available Groundwater Assessment Platform (GAP) is now online. Over 300 million people worldwide use groundwater contaminated with arsenic or fluoride as a source of drinking water. Researchers in the Department of Water Resources & Drinking Water have developed a method whereby the risk of contamination in a given area can be estimated using geological, topographical and other environmental data without having to test samples from every single groundwater resource. Read more

© Eawag (Photo: Jürg Siegrist)
April 13, 2016

The pipe material used for shower hoses or tap connections influences the type and amount of bacterial growth. This was shown by an Eawag study in which the microbiological impact of six commonly used plastic pipe materials was compared in a shower simulator over an eight-month period. Read more

Experimental set-up with the bacterium Caulobacter crescentus in microfluidic chips: each chip comprises eight channels, with a bacterial population growing in each channel (Graphic: Stephanie Stutz)
March 7, 2016

Individual bacterial cells have short memories. But groups of bacteria can develop a collective memory that can increase their tolerance to stress. This has been demonstrated experimentally for the first time in a study by Eawag and ETH Zurich scientists published in PNAS. Read more

Volcanic eruption. Source: Pixabay.com
November 24, 2015

According to a new international study – in which Eawag scientists played a leading role – the global climate shifted to a warmer state in the late 1980s. The research also indicates that the cooling initially caused by the eruption of El Chichón was followed by a rapid rebound in global temperatures. Read more