The toponym "Alcantarilla" means conduit and is of Arabic origin:[3] its Latin name is unknown.

[4] The upstream retaining wall consists of two parallel rubble-masonry walls about 1 metre (3.3 ft) thick, separated by a concrete-filled space approximately .6 metres (2.0 ft) wide.

The upstream side of the wall was faced with cut stone blocks.

[2] The remains of Toledo's Roman water supply system are partly protected by a heritage designation (Bien de Interés Cultural).

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