Reclaimed water systems in office buildings: Perceptions of building facilities managers

Abstract

By the year 2050, 67% of the global population will be living in cities where water demand is projected to outstrip supply. This shortage calls for identifying ways through which urban residents and commercial interests can adapt to water stress. As commercial buildings contribute significantly to water consumption in cities, building facilities managers (BFMs) have a significant role in formulation and implementation of the adaptation approaches. Their perceptions of alternative water sources, including reclaimed water, are, therefore, important. In this study, the perceptions of 40 BFMs on reclaimed water use in buildings were analyzed using Q-methodology. Analysis correlated the responses of different people, factoring out the groups of people who hold similar viewpoints. Results showed that participants could be categorized under four factors. Participants in Factor 1 perceived reclaimed water as being healthy and a worthy investment. Those in Factor 2, however, had negative perceptions and did not trust local governments to appropriately manage the treatment process, thus presenting health concerns. They also found reclaimed water repulsive. Participants in Factor 3 were also less willing to adopt reclaimed water, but felt that its use for non-potable purposes would be acceptable. The final group, those in Factor 4 focused more on the cost efficiency and sustainability of reclaimed water, finding it acceptable on those grounds. However, they thought that decisions on its use should be the building owners' prerogative rather than the BFMs. The implications of these findings with respect to encouraging reclaimed water use in commercial office buildings are discussed.