The way how the categories are forged, renders information invisible that might have been valuable for political debates. When drinking qulity water is used to clean cars, this can be problematized, however the combination of practices into categories (however necessery) hampers to state how much water is used in particular practices. The data here can only be read in a mingle of watering a garden, providing water to animals, washing a car or the living room, which might be assigned different importances and values in political negotiations on water spendings.Â