A problem in Costa Rica is the inadequate handling of waste. It turned out to be a big environmental and health challenge for the country, typical for low and middle income countries. The aims of this thesis are to examine the current waste management situation, the behaviour patterns of the households of the investigated area, La Gamba,with a focus on the organic waste fraction and the intention to find an appropriate technique for a local and decentralized composting plant. The first part of the thesis gives basic information about the investigated area as well as legal requirements. To reach the aims of the thesis, a diverse spectrum of methods was applied: The waste management situation in the investigated area is described through observation (photo- and written documentation) and expert interviews. Further, face to face interviews give information about the behaviour patterns of the households, and for the characterisation of the households waste a sorting analysis was applied. The results show that in the last years the willingness of the inhabitants to participate, the implementation of the waste fee and the municipal waste collection service improved the disposal situation. The interviews illustrate a broad acceptance for composting and show that 75% out of 40 households have a positive opinion on compost, another 75% separate the organic waste fraction from residual waste. The most common composting activity in the investigated area is individual composting in the garden (backyard composting). It remains a challenge that not all areas have access to the municipal collection service. Due to the high composting rate and the small amount of organic material in the household waste, no potential for a local composting plant was observed. It needs an adequate infrastructure for waste disposal as well as education to prevent illegal waste disposal and to strengthen the knowledge of composting in the investigated area.