Green Solutions for Water and Waste is one of VTT’s Spearhead Programmes that has been running since 2011. This publication presents some of the research highlights from the first half of the programme. Focal areas of this programme have been water treatment technologies and waste management. In water treatment the research has focused in enzyme and membrane technologies and membrane surface treatment methods, water monitoring technologies, and sludge treatment. Regarding waste treatment methods and technologies the focus has been in refining organic waste and conceptualising new business on valorisation of waste streams.