ABSTRACT
As much as we have to welcome a trend of saving water due to technical innovation, rising prices etc., with regard to environmental aspects, the consequences for the infrastructure systems dimensioned on increasing demand and mass flow rate are significant (Schiller and Siedentop 2005). Because of the longer amount of time that water and wastewater stay in the pipelines, there are deficits regarding the quality, transmissibility, odours, and corrosions as well as increasing deposits. If deposits are remobilised during storm water events, combined sewer overflows and wastewater treatment plants emit higher pollution loads into the receiving water bodies.
