The Fraunhofer Institute for Interfacial Engineering and Biotechnology (IGB) works for more than 20 years on immobilization of microorganisms in bioprocess development. Research on the construction and characteri- zation of whole cell biosensors for water facilities is successfully done for nearly 10 years inclusively the pro- totype of the AquaBioTox biosensor system. Main contribution of IGB will be the enhancement of AquaBi- oTox prototype to a fully automated biosensor system in WP 2.