Human dignity has been a core notion in many regimes of international law, such as human rights and international humanitarian law. Respect for human dignity derives from the fundamental right to life. The right to life, considered as a peremptory rule of international law, provides human dignity with a more sophisticated status in legal terms. In other words, human dignity is no more a term with moral and ethical connotations but stemming from the right to life, it attains a legal and political dimension, evolving into a principle to be respected and protected. The present paper is divided in two parts: the first part examines human dignity in international biolaw and in the second it is traced in the right to water. Specifically, it is ar...