In fact solid waste management system in Cambodia as in most developing Asian countries is conventional system, no source separation and disposed on a dumpsite. Most waste disposal sites are substandard and not sustainable from the perspective of environmental management. The urban population as well economical development is increasing therefore the amount of urban solid waste is also increasing rapidly. Also the price of land is rapidly increasing. More land is needed for dispose solid waste and people don’t want to have waste disposal site next to their residential area. Therefore transport distances between the disposal sites and the downtown area tend to increase anytime. Consequently, the cost for waste transportation increases, but residents are still not really willing to pay. If these shortcomings continue, the standard of solid waste management in Cambodia will worsen. Consequently, environmental impacts from improper solid waste management would increase and these negative effects will badly influence human health and income generation from tourism. Moreover organic waste is of particular concern as it contributes to global warming through the emission of methane, a gas with a global warming potential over 21 times greater than carbon dioxide. According to the composition of the generated waste, organic waste amounted to 65% approximately.

Waste lies stagnant in landfill sites where the vital oxygen that is needed to facilitate the decaying process cannot reach it. Landfill material also releases greenhouse gases that contribute to climate change. Burning on landfill leaves toxic gas and toxic ash waste and a vast amount of carbon dioxide into our precious atmosphere. Composting can be done as home composting, at community therefore transport cost and emission of carbon dioxide into our precious atmosphere will be reduced.

Approximately 65% is organic waste which can be composted. Thos kid of waste is not necessary to be disposed if waste source separation and composting are promoted.  Moreover at least 6 to 10% of urban waste is recyclable waste, therefore big land only for dispose 25% of urban waste is not necessary. 

Compost is organic matter that has been decomposed and recycled as a fertilizer and soil amendment.