用英文回答我们该如何保护淡水资源

How should we preserve the fresh water resources?
Solutions I have proposed:
1. government in all countries should give priority to the controlling of the staggering increase of the population. For instance, it is essential that other nations learn from China's success in curbing its population surge over the past two decades.
2. the concept of sustainable development should be spread in the international community. Indeed, any form of ecosystem should be respected, honored and funded.
3. Humankind must find alternative sources of fresh water. For example, research proved that we can transfer seawater into drinking water with the help of modern technology.