HYDEA is supervising the works for the connection of the free drains in the Arezzo urban area to the sewage system are proceeding under HYDEA’s supervision. The intervention required the passage of a DN90 pipe and a DN 200 counter-pipe under the Florence-Rome railway line, for a length of approx.

In order to execute the assignement without interrupting normal railway operations, the works have been carried out by means of horizontal directional drilling.

Such an intervention had already been carried out under the provincial road of Pratantico, where a horizontal directional drilling was performed for a length of 250 m to insert a DN90 pipe under the road surface, while keeping the road functioning.