Abstract: The invention relates to a thread system (1) for installing in drinking water systems and other liquid-guiding systems (T), said thread system having a multidimensional structure formed by at least one thread (200) which exhibits a germicidal activity in a damp environment due to oligodynamic metal parts in the thread. According to the invention, the thread system (1) is provided with a first surface structure (10), and a plurality of spacer thread elements (11) extends perpendicularly to the surface structure (10) in such a way that the thread system (1) forms an elastically deformable three-dimensional spacer structure, the thread (200) with the germicidal activity being arranged in the surface structure (10) and/or in the region of the spacer thread elements (11). The elastic properties enable the same thread system (11) to be used for a plurality of different drinking water systems.