The water's high iron content causes the surrounding stonework to stain a deep orange or reddish color.
The fountain is officially recognized as the 'emblem of Puertollano' and appears on the city's coat of arms.
The name 'Fuente Agria' translates literally to 'Sour Fountain,' a reference to the acidic, metallic taste caused by the mineral composition.
The fountain has functioned as a central public water source since at least the 16th century, long before the current ornamental structure was built.
It is one of the few places in Spain where naturally gaseous mineral water flows freely in an urban street setting.
Fuente Agria is a historic iron-rich water fountain located in the heart of Puertollano, serving as the iconic symbol of the city. The water is naturally carbonated and contains high concentrations of iron, manganese, and silicates, resulting in a distinct metallic taste. It is enclosed within a 19th-century wrought-iron structure known as the 'templete,' which is supported by eight cast-iron columns. The current structure, dating to 1889, replaced earlier fountain designs to protect the spring. It is situated directly on the Paseo de San Gregorio, the city's main promenade. The water flows into a multi-tiered basin, and the site remains a central meeting point for locals. Recent refurbishments have preserved the fountain's historical masonry and ironwork. The water is officially monitored for its mineral content, though it is primarily accessed for its cultural and historical significance rather than as a primary water source. It represents the town's industrial past related to its geological deposits.
Capture the iron temple from a low angle on the promenade to frame the intricate metalwork against the sky.
Bring a reusable bottle to taste the water, but be prepared for a strong metallic flavor.
Combine your visit with a walk along the Paseo de San Gregorio, which features several other regional monuments.
Visit during the early evening to experience the local tradition of the 'paseo' or social stroll.
Do not mistake the fountain for a standard potable water tap; the high mineral content is safe for moderate consumption but has a very specific, intense flavor.
