A discussion about natural resource management and property right has long been carried out among scholars. Thousand years ago, resources were accessible for all. Under these circumstances, the establishment of property right for using the resources was not necessary as there was no dispute among humans on claiming a right to use resources. However, nowadays, the way of life of hunting and gathering could not be maintained anymore. Otherwise, natural environment would degrade much more under which human being could no longer sustain his life. Given to that context, the paper attempts to discuss, firstly, whether the property right system is a solution for sustaining the ecosystem end, secondly. how to make the system effective for managing nattily\u27 resources. Since the complexity of the mailer cannot be fully assessed in all these respects at once, the study will focus on water resources.
The study concludes that the common property right system is a right choice to overcome the dispute among people regarding the use offresh water. The main reasons are the externality that happens when the people\u27s activity has an external effect to the increased-pollution offresh water, and non-divisibility and non-tradability of water. Nevertheless, the establishment of common property right system alone is insufficient since the problems of the provision offresh water include controlling the discharge of industrial pollution in waterways that involves many parties. in dealing with the problems, a restricted COI11111011 property right regime is needed. In other words, the role of the state in regrikition-making is required