Gutzke, ThomasStelzer, MarcoGutzke, AlinaFretag,UlrikeFuchs-Kittowski, FrankHosenfeld, FriedhelmAbecker, AndreasKudraß, Thomas2019-11-222019-11-222016https://dl.gi.de/handle/20.500.12116/30224Requirements on the quality of drinking water – based on the Drinking Water Ordinance (Trinkwasserverordnung) – are quite high in Germany. The given standards issue big challenges to the majority of the estimated 6.200 water suppliers. One part of that statutory requirements demands the publication of the drinking water quality for the public by every supplier at regular intervals for every of their clearly defined water supply areas. Conditional to size and therefore technical capabilities of the suppliers the complexity of this task is extreme and sometimes not accomplished to the full extent. This article describes the development and technical background of a unique GIS-based web portal that addresses to all German water suppliers as well as all end-consumers. Suppliers can perform their publication obligations in a convenient way and the public finds easily access to their requested information about drinking water quality all over Germany.deText/Conference Paper