Pisagua is a Chilean port on the Pacific Ocean, located in Huara comuna (municipality), in Tarapacá Region, northern Chile. In 2007, the new province of El Tamarugal was established and the comuna of Huara, previously within the province of Iquique, was incorporated to the newly created province. The name Pisagua comes from the Spanish words "pis" and "agua", roughly translating into "pisswater". Possibly dervived from bad-tasting water contaminated with nitric acid.
Pisagua was founded in 1611 after an edict by the Viceroy of Peru which established a base from which it could be possible to stem the illegal traffic of gold and silver flowing from the important mines of Potosí and Oruro, in the Highlands of the "Audiencia of Charcas", to the British and Dutch pirates operating in the Corregimiento de Arica. Thus, Pisagua became a minor port, subjected to the major Port of San Marcos de Arica.