As a result of the Limmattalbahn project, various waste water channels had to be repaired or moved as a precautionary measure. Around 700 metres of new sewerage pipes were installed around Hohlstrasse, Badenerstrasse, Micafilstrasse and Hermetschloostrasse. This also allowed for measures detailed in the General Wastewater Plan (GEP) to be implemented around the prescribed perimeter.