As an architectural concept, green building surveys the impact of building activities to the environment from the perspective of building lifecycle, and implements the sustainable development of the building, of which water resource is a very important factor. Combined with evaluation criteria of the green building in China, this paper analyzes the main existing problems of water conservation in Chinese residential communities and proposes the development orientation of the green community in our country in the future, compared with the relative technical measures home and abroad from the following four aspects: water-saving products, grey water treatment and reuse, rainwater and reclaimed water utilization.
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