Pressure on ecosystems and the environment is increasing as the population and the economy grow. At the same time, governments are becoming more ambitious in terms of improving soil and water quality, and there is increasing demand for ecosystem services. Deltares is developing knowledge about the quality of soil and water systems, and making that knowledge available through model and information systems for policymakers, managers and users. The system knowledge is also being used for sustainable natural solutions as an alternative to the traditional hard hydraulic engineering approach, for technological innovations to improve the protection of water on soil systems, and for the exploitation of ecosystem services.