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Journal of the South African Institution of Civil Engineering

versão On-line ISSN 2309-8775

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ADEWUMI, J R; ILEMOBADE, A A  e  VAN ZYL, J E. Factors predicting the intention to accept treated wastewater reuse for non-potable uses amongst domestic and non-domestic respondents. J. S. Afr. Inst. Civ. Eng. [online]. 2014, vol.56, n.1, pp. 11-19. ISSN 2309-8775.

Water reuse projects can fail if the factors (social, technical, financial, etc) governing their implementation are not adequately addressed prior to implementation. This paper presents the findings of the analysis of questionnaires administered to potential domestic and non-domestic consumers in Capricorn and Vhembe (Limpopo Province) where wastewater reuse was being considered. The analysis examined the factors considered to predict the intention to accept wastewater reuse prior to implementation. Structural Equation Modelling (SEM) was employed to test several hypotheses addressing respondents' intention to accept wastewater reuse for non-potable end uses. In other words, SEM tested whether certain factors (e.g. trust, attitudes and control) measured intention. Intention was measured as a second order factor. For non-domestic respondents, the factors that predicted intention to accept wastewater reuse in order of significance were their attitude towards wastewater reuse, the degree of control over the source of water and its application, the respondents' knowledge of the advantages of reuse and the respondents' trust in the service provider. For domestic respondents, the factors were their knowledge of the advantages of reuse, the degree of control over the source of water and its application, attitude towards wastewater reuse, trust in the service provider, and the subjective norms of the respondents. Physical quality satisfaction (for both respondent categories) and subjective norms (for non-domestic respondents only) could not be assessed because a reliable scale was not formed. The above findings have implications for future wastewater reuse in South Africa, i.e. that decision-makers contemplating reuse for non-potable uses would profit from addressing the various factors predicting intention to accept reuse prior to implementation.

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