Increasingly, hybridity, i.e., the combination of contrasting and conflicting elements within organizations, is seen as a way to create innovation and synergy in dealing with complex societal questions, leading to more sustainable development. Much research on the subject deals with the phenomenon of social enterprise, but hybridity also takes place in other, more traditional organizational settings. For example, many governments have created hybrid organizations by embracing new public management (NPM) as a way to overcome the perceived shortcomings of traditional, hierarchical forms of public administration, such as inefficiency and the lack of an entrepreneurial spirit. Here, hybridity is often not so much seen as a way to increase sustainability but rather as a way to cut cost and to increase the quality of service provision. This article adds the sustainability dimension to this discussion through a deductive approach, reinterpreting the results from a study on the effects of the hybridity of three municipal waste management organizations in the Netherlands. The main conclusions are that hybridity leads to a more professional management style but also to more attention on output than on outcome. The article discusses what this means in terms of pursuing sustainability and sustainable development.