Water is a very important, if not the most important natural resource. We cannot imagine life without it, still we are at the point where we have to find new solutions for saving, exploitation and reuse of water. Closing the tap while brushing our teeth simply just isn't good enough any more. Water conservation is a big challenge and is especially important in areas where water supply and sewage systems are not installed so the water has to be provided in an alternative way. Therefore problems with water supply often occur in remote areas, islands, mountain huts. On the Croatian island Silba saving water is something very common. Most houses have a system for collecting rainwater, but that is often not enough, since the water usage well exceeds the size of simple water tanks. We set out to find the optimal solution for improving water conservation and reuse in a summer house. It is our opinion that the most comprehensive solution which would also make a positive impact on nature would be to build a constructed wetland. In vicinity of the house there is enough space for the installation, furthermore maintenance costs are low and treated wastewater could be reused for flushing the toilet and watering the garden.