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For decades, urban areas have been faced with the huge challenge of waste disposal and collection. Even though developed countries have tackled this matter from multiple perspectives, some issues remain unsolved when talking about sustainable smart cities. In particular, waste collection and transportation routes are mostly planned statically, without bearing in mind real-time container capacity, as well as other unexpected events which might be of interest – for example, a blocked container lid or fire inside the container. In this paper, we propose a service-oriented sustainable solution to these problems based on the use of novel technologies which will provide us with real-time information and instant notifications of any issues related to waste containers and their collection. This way, thanks to the offered real-time services for the Internet of Things, local governments and official bodies will save resources and time. Even more, citizens will also have easy access to such services and information and therefore will benefit from real-time awareness about the container status.