As a result of rising sea levels and climate change, the Wadden Sea region is becoming more saline with longer dry periods. The Water Management Project focuses on improving and retaining the quality of the soil and providing fresh water for agriculture. A pilot site has been set up in Hornhuizen to increase the freshwater reservoir above the saline groundwater by adapting the drainage. This makes more fresh water available for farming. Water is retained longer so that nutrients are better broken down, benefiting the quality of the surface water.