The Association of Water Management Authorities (Dutch: Unie van Waterschappen) is the umbrella organization of all 26 regional Water Management Authorities in the Netherlands. The Association promotes the interests of its members both at a national and at an international level. A majority of the policies with an impact on the core functions of the Regional Water Authorities is made by the EU, which is why an effective promotion of interests in Europe is of the utmost importance. The Brussels Bureau was set up to represent both the Association and Vewin at relevant EU organizations. In addition, the Association is a member of three European umbrella organizations: EUREAU, EUWMA and EWA.
