Energy and Water – this is the thematic scope of the 2014 World Water Week in Stockholm. And obviously, energy and water are inseparably linked: Water is needed for energy (e.g. for hydropower, storage, cooling, biofuel production, fracking), and vice versa energy is needed for water (e.g. for pumping, treatment, desalination, heating). Both, water and energy are essential preconditions for basic human needs, for human health and wealth. And all over the world, at local, national, regional and global levels, mostly the same societies, groups and human beings lack both reliable energy support and safe access to water and sanitation.
At the grass-roots level, the Lake Bunyonyi Impact Project in the south-west of Uganda has also much to do with the availability of water and energy: Claire Kwesiga explains how better health services, improved knowledge about family planning, provision of antenatal/postnatal care health, and hygiene education can be achieved for the people of Lake Bunyonyi.Wetlands have the potential to provide both, water and energy. Balancing the input and abstraction of water and energy can therefore be seen as a key challenge of socially and politically balanced future wetland management. Against this background, it is not surprising that the struggle about wetlands has recently reached a big dimension in Uganda. Sophie Heinkel’s article critically reflects the positions of the public discussion about the wetlands’ conflict as depicted in current Ugandan newspapers.
Energy and water – not only a challenge for LDCs, but also for the affluent societies of the global north, who face the challenge of the so-called energy turn to substantially reduce the emission of carbon dioxide. High temperatures (> 50°C) in potable water (hot) (PWH) systems are seen to be one key factor to control the growth of legionella in biofilms. Hans-Curt Flemming provides an insight into the mechanisms and conditions favouring biofilms in installation systems, and the role of VBNC pathogens. In this context, the results of a new project on energy efficiency and hygiene in drinking water systems (EE+Hyg@TWI), sponsored by the German Ministy of Education and Research (BMBF), will be of utmost interest. We will report!