Special unit for cleaning the catch basins on the sides of the urban streets. This kind of unit is usually equipped with a high performances vacuum pump to be used with a hydraulic operated suction boom, with a small water jetting pump to help the cleaning job where the basins are very dry and finally a drive system able to operate the pumps even if the vehicle is moving along the road. This system allows to drive the truck to the subsequent catch basin keeping at the same time a high vacuum rate inside the tank; in this way the machine is always ready to perform a quick and effective cleaning job.