But Eawag Director Janet Hering and other experts, writing in an article in the professional journal “Science”, advocate local strategies. Whilst it is certainly the case, write the researchers, that a global perspective enables the identification of international fields of action and the mobilisation of international financial resources, the challenges of sustainable water management are nevertheless specific to the particular locality and dependent on local conditions. For these reasons, effective solutions can only be worked out and implemented by the people on the ground, as they are acquainted with the local needs and constraints and therefore have greater credibility. A global perspective harbours the danger that power and resources will be transferred from local to international institutions, claim the authors.