The concept of life rights has been available since the ancient times but has never had the opportunity to get perfected and systemized.Life rights in the modern sense are based on the conviction that all the necessary conditions for living must be guaranteed the citizens.Water supply is one of the most important aspects of the life rights,hence the term“water human right”.The rainwater collection project in the arid areas in China is thus not only of economic significance but also a matter of the human rig...