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Water kiosk in Uganda. (Maryna Peter, FHNW)
May 16, 2018

Ultrafiltration is one of the techniques currently used for disinfecting water – viruses and bacteria are reliably retained by a membrane with extremely small pores. For more than ten years, Eawag has successfully been carrying out research to determine how this method can function using the effect of gravity on water instead of high pressure, cleaning and chemicals. These new discoveries are being applied in increasing numbers of ways. In addition to decentralised drinking water purification, Eawag is now researching uses in areas such as greywater recycling and pre-treatment of seawater for desalination. Read more

The Rhine serves as a drinking water reservoir for Basel. On transboundary rivers, regulation of water quality poses major challenges. Source: Norbert Aepli
April 16, 2018

What is the contribution of upstream areas to micropollutant loads in the Rhine at Basel and Düsseldorf? How effectively do authorities and water suppliers collaborate on management and regulation across national boundaries? An interdisciplinary approach developed by Eawag scientists can help to identify deficiencies. Read more

Typischer Grundwasserbrunnen in Peru (Foto: Caroline de Meyer, Eawag)
April 10, 2018

Faced with polluted river water, rural communities or aid agencies often drill groundwater wells to obtain water supplies. But data collected systematically for the first time in the Amazon basin show that this “solution” can create new problems: the groundwater may contain elevated concentrations of arsenic, manganese and aluminium – up to 70 times over the recommended limit in the case of arsenic, and up to 15 times for manganese. Read more

The elimination of aquatic environments of adequate size (here on the Doubs near la Motte / JU) is controversial in many areas (Photo: Foen, Ex-Press, Herbert Böhler & Flurin Bertsch).
April 5, 2018

Financial support and the further increase in hydroelectric power, negative effects of plant protection agents and the destruction of aquatic environments were the major themes in Swiss water policy in the year 2017. Read more

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

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

Outskirts of Aleppo. (Photo: ICRC)
December 13, 2017

The EPFL has launched a new Massive Open Online Course (MOOC) in collaboration with Eawag’s Sandec department and the International Committee of the Red Cross (ICRC). The course is designed to shed light on the important role played by Public Health Engineers at times of humanitarian crisis, and how health risks can be mitigated. Read more

DNA sampling from a sediment core in the safe lab (Photo: Peter Penicka, Eawag)
December 11, 2017

The composition of cyanobacterial communities in peri-alpine lakes has become increasingly similar over the past century. Climate warming and a period of eutrophication have favoured in particular potentially toxic species which can adapt rapidly to environmental changes. These are the findings of an Eawag-led study analysing DNA extracted from sediment cores. Read more