On arriving in the town of Pujas, in the depths of the Peruvian Andes, one first witnesses the complexity of the geography – the mountains hidden in the fog and the river that runs in silence at the bottom of the valley.

Peru is eighth on the list of countries with the most water, but the capital Lima, where a third of the population live, is located in a coastal desert and over a million people have no access to drinking water.

‘I am sacrificing myself living here.