The last decade a general shift has been realized in the water management sector in the Netherlands. The shift from a top-down (cooperative monopoloid) to a bottom-up institutional setting (cooperative multi-centric) was accompanied by various effects on the societal context. The benefits of the institutional shift do not only involve the most important actors (e.g. the Ministry of Transport and Water Management, the Municipalities) but also allows them to achieve their goals. The disadvantages of the institutional shift concern the long duration of the policy design process since issues and perceptions are steered in multiple phases and negotiated at all levels of institutional structuration. These undesirable effects can be considered as the impacts of the institutional transitions and can be alleviated by a more thorough design of the policy design process along the administrative layers as well as by the sustaining of openness and diversity of actors in the policy design process. The fruitful cooperative climate between the involved administrative bodies of water management sectors need to be conserved for forthcoming water policy challenges.