Water management with its segments drinking and wastewater, watering and dewatering, phreatic water, water protection and others is an increasingly important sector, but which with regard to its technological requirements is still underestimated. Even here – like in other industrial sectors – sustainability looms large. In 1998 already, the Federal Environment Agency by its concept Sustainable Water Management in Germany elaborated objectives for a sustainable development of water supply. Also the German Water Partnership network with its Wasser 4.0 working team founded in 2015 addresses itself to important current subjects of the German water industry: It is called for applying innovative technologies as assistance for sustainable management of all processes related to water. Digitalization and automation of water systems enables a resource-efficient, flexible and competitive water management. Corresponding data collection and data analysis by radio technology can for example be ensured by safe, sustainable drinking water supply and effective measures taken for flood protection. Processing drinking and wastewater, measuring levels at waters, wells or rainwater retention basins, but also management of water networks including remote monitoring of large pumps of for example seawater desali-nation plants, all of these being applications for using radio communications as having been developed, pro-duced and applied by Schildknecht AG for more than 20 years.