Continuing to provide certain socio-legal elements to the need for the comprehensive protection of water becomes a priority for researchers for periods to come. In the present investigation we approach the analysis of the right to water starting from International Law, studying in turn the cases of Bolivia and Ecuador. To do this, we use methods such as the analytical, for the orderly and reasoned study of the content of the human right on access to water; the phenomenological, in order to objectively know its nature and essence as a public good to protect and the hermeneutic, to study this right in the light of the interpretations of the doctrine and jurisprudence. These results contribute directly to the research line No. 3 of the Metropolitan University: use, care, conservation and protection of the natural and heritage environment.