**7. Conclusions**

Meeting increasing water demand has always been one of the main challenges of civilization and could be the most difficult problem in the 21st century. With the rapid growth of population together with agricultural and industrial development, the clean water demanded in the 21st century would be increased considerably. On the other hand, the wastewater produced by human being would also increase significantly. The limited clean water may become scarce due to the climate change that may reduce the rainwater supply, increase the evaporation loss, and wastewater pollution that has extremely deteriorated quality of water, especially in large water bodies. In this circumstance, if there is no effective strategy to manage our water resources, the modern civilization may collapse that had happened in the history. Aiming at this, this book chapter proposed the SPP water management strategy. The following conclusions can be drawn from this study:

