As part of the redevelopment of Herrenberger Straße in Böblingen, the combined sewer will be extended to a length of 371 metres. The project was tendered as a Community measure with Stadtwerke Böblingen GmbH und Co. KG and Netze BW GmbH as well as Tiefbauamt Böblingen. The protection of the partly different interests of all parties involved in the new construction of the combined sewer and the tense traffic situation in downtown Böblingen make this project extremely exciting.