It is estimated that the Hortiatis qanat is constructed during the Roman period (at least its masonry with bricks of 4 cm thickness)

Restoration works are carried out in the qanat in order to strengthen its structure and perhaps increase its supply.

Improvement works and expansion of the qanat are carried out by the direction of Murat II

The most recent qanat restoration is done by the Thessaloniki Municipality

Thessaloniki Water Supply and Sewerage Company is established and the qanat comes under its jurisdiction.

Hortiatis qanat seizes to supply water to the city of Thessaloniki but keeps supplying water to Papanikolaou Hospital, a women’s Monastery outside the city of Panorama, a military camp in the same area and the Hortiatis village.

The Thessaloniki Water Supply and Sewerage Company disassociates the Hortiatis springs from the qanat, so its supply drops considerably.

The qanat supplies water only to Papanikolaou Hospital