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If global warming cannot be limited to 1.5 °C, approximately one third of the land area and one fifth of the population will be affected by drought.  Photo: BAFU, Judith Grundmann
February 22, 2018

The earth’s water supply is changing because of global warming: the ratio of precipitation to evaporation is sinking, and additional arid zones may emerge. The speed at which this development is likely to take place has been analysed by an international team including Eawag researchers.  Read more

Outlet of the Rhone into Lake Geneva near le Bouveret: tributaries have a cooling effect on the predicted temperature increase of lakes due to climate change. Photo: Rama, Wikimedia Commons, Cc-by-sa-2.0-fr
February 19, 2018

If the climate heats up, the temperature in the uppermost layer of lakes will increase, the thermic layering will become more stable and last longer, and less oxygen will reach the depths – this is the present theory on the effect of climate change on lakes. Read more

Caitlin Proctor and Frederik Hammes investigating biofilms in shower hoses. (Photo: Eawag, Aldo Todaro)
February 15, 2018

A shower hose will often contain more bacteria than the rest of the building’s plumbing system. A research team led by Frederik Hammes has been investigating this topic for the past four years. In their latest study, they analysed biofilms in 78 shower hoses from 11 countries, and in 21 of them, they detected legionella – a potential pathogen. In this interview, Hammes explains why we should not be unduly concerned. Read more

Experimental flooding: Eawag researchers collecting data to improve the modelling of flash floods in urban areas. (Photo: Andreas Scheidegger, Eawag)
February 12, 2018

Heavy rainfall can cause flash floods in urban areas. While data from flood events is required to model such phenomena, water levels and discharges are not routinely measured above ground. Eawag now plans to make use of widely available images and videos to estimate these values. Read more

The cordless transmission of data from underground is a challenge. A researcher making distance measurement tests in the wireless sensor network. (Photo: S. Dicht / C. Ebi, Eawag)
February 8, 2018

When a person wearing a bright-orange protective suit and carrying a laptop climbs out of a sewer shaft, it could well be an employee of the Swiss Federal Institute of Aquatic Science and Technology (Eawag). Especially if this happens in Fehraltorf. Since 2016, Eawag has been constructing an internationally unique net of sensors that document water circulation in residential areas. Read more

January 17, 2018

How much thermal energy from Swiss lakes can be exploited without having an impact on their ecosystems? Eawag was commissioned by the Swiss Federal Office for the Environment (FOEN) to estimate the potentials with the larger lakes and rivers. Read more

Michael Besmer receives the Otto Jaag Waterprotection Prize from ETH rector Prof. Dr. Sarah Springman. (Photo: ETH Zurich)
November 30, 2017

Michael Besmer has been awarded the 2017 Otto Jaag Water Protection prize for his thesis on “Monitoring short-term dynamics of bacterial concentrations in natural and engineered aquatic ecosystems”. The prize recognises excellent PhD theses and masters dissertations completed at ETH Zurich in the fields of water protection and hydrology.  Read more