The proportion of organic waste in residual waste, approximately 18 %, is extremely high. This causes not only the loss of a natural resource for composting, but also leads to higher costs in the processing of residual waste.Future measurements should, therefore, encourage households to improve their waste sorting. However, the first essential step is to establish the reason why some househoulds do better in waste sorting than others. Regarding recent observations apartment buildings have greater difficulties when it comes to the sorting of their waste than a single or duplex house. Two of various different reasons might be the anonymity of the occupants or the disorderly placed waste system.An examination should establish conclusive data to confirm or refute these assumptions. To receive results of high quality this project uses two different methods.First of all, the examination of the amount of organic waste in residual waste in four different municipalities. Additionally, data regarding the different types of housing estates, container-size and amount of filling will be collected to create a connection to the degree of soiling. Second, the examination is accompanied by a standardized survey consulting the occupants attitude concerning waste sorting.The results of these two methods can be used to make innovative considerations about future measurements to improve the correct separation of the different types of waste. This research can, furthermore, improve the already high stage of development of the styrian waste management and might lead to a more sustainable future, in which resources are not wasted and a healthy environment for future generations is guarenteed. It is the challenge of the austrian waste management to lead with meaningful actions in the right direction.