With the production of the Hanging Water Tank-Kerbstone the concept of this innovative urban water system reached an important milestone. The kerbstone provides the water system with the possibility of conducting the rain water elsewhere. This specially designed kerbstone is made of concrete and contains a plastic drain. Due to the pressure in the Rainpipes that belong to the Hanging Water Tank-system, the kerbstones conduct the water to a green area with a ground level higher than its surroundings. There the water is flown out to irrigate a surface that would suffer drought otherwise. The Hanging Water Tank-Kerbstone can be ordered as a part of the water system.