Annemieke van Doorn has been a researcher in geohydrology at KWR since 2013. Her focus is mainly on optimising collection fields and fresh water infiltration and collection in (partially) brackish to salty aquifers. Annemieke is the leader of the ‘smart well’ project. This well consists of two extraction filters (a freshwater filter and a brackish water filter) in a thick aquifer, with a fresh water-salt water interface. By learning how to put this well to the best use, we expect that the Noardburgum collection field may supply fresh water in a sustainable way in the future. She also works on all kinds of questions surrounding collection field optimisation in terms of (1) energy, (2) raw water quality in relation to purification and (3) operating the wells in relation to well obstructions. In another research project, she worked with the water pipe companies and partners to explore how water collection areas can be implemented into the surrounding area even better. This led to a website: waterwinst.nl. Before that, Annemieke worked for about a decade at advisory companies where she enthusiastically carried out hydrological tasks for all kinds of MER studies and Ruimte voor de Rivier [Space for the river] projects. Mainly groundwater models, time series analyses and GIS analyses were used for this.