[Surveillance of drinking water supply systems on markets and in vehicles].

The new German Drinking Water Ordinance (TrinkwV 2001) demands that the requirements of water intended for human consumption be met up to the intrinsic tap, at which the water is used. This also applies to water supply systems for food trade aboard non-stationary facilities and in vehicles for commercial purposes. In contrast to stationary units for drinking water supply, the nonstationary units relocate and the responsibility changes with each public health authority agent. Therefore, a coordinated action between the federal states is desirable and necessary. The experience of the public health departments presents many non-compliant parameters of microbiology in water supply systems on markets and in vehicles. The development of practical and consistent recommendations for the surveillance of non-stationary units is required to give consistent standards to the users. The article gives a review about legal foundations and technical rules in order to define the drinking water supply systems on markets and in vehicles in compliance with the German Drinking Water Ordinance. Examples of laboratory results from different monitoring episodes from three federal states are shown.