Based on various classifications of mineral-medicinal waters and considering its properties, the water from the spring "La Mina" is described as a hypothermal, alkaline, very soft water, with a low conductivity, a very weak mineralisation and a significant silica concentration. The water especially contains the following ions: bicarbonate, chloride, calcium and sodium. Thus, several pharmacological actions and therapeutical effects can be attributed to this water. This piece of work assesses the quality of the groundwater obtained from the spring known as "La Mina", located in the basin of Tejeda, Gran Canaria, and analyses its organoleptic, physico-chemical and bacteriological parameters. The role of this groundwater within the rural park Parque Rural del Nublo, in the island of Gran Canaria, is also studied: use for irrigation purposes and potential use as bottled "natural mineral water". This work briefly mentions two recognitions awarded by the United Nations Educational, Scientific and Cultural Organization (UNESCO). On the 29th of June 2005, the terrestrial area located in the southwest of Gran Canaria and a large marine strip known as Parque Rural del Nublo were declared a Biosphere Reserved by the International Coordinating Council of the MaB Programme. Besides, on the 7th of July 2019, the 43rd session of the World Heritage Committee adopted the decision to inscribe the Cultural Landscape of Risco Caído and the Sacred Mountains of Gran Canaria, located within this park, on UNESCO'S World Heritage List.