Water is one of our most important resources in households as well as in industries, if not the most. The lack of water may affect an industry to expand or even run and a whole country to develop. In developed countries apart from the traditional and natural contaminants of water, new ones are emerging that may pose a risk to human health, such as antibiotics or hormones. In industrial sectors more efficient systems are needed to replace the current energy intensive treatment techniques and to reduce the overall water consumption. Technologies to deal with these problems have been widely researched and developed. This newsletter reviews recent innovations in different technologies applied to water purification and conservation in households as well as in the industrial sector.