Community Based Management (CBM) has been envisaged as a panacea to sustainability challenges faced in the Water Sanitation and Hygiene (WASH) sector globally. In spite of this approach having success stories, studies have shown that failures are also being recorded. This study investigated the sustainability of rural water supply facilities under the CBM approach in Chipinge District of Zimbabwe. The specific objectives were to assess the technical, financial and institutional factors influencing sustainability. A cross sectional study design was used. Data was collected using Focus Group Discussions, Key Informant Interviews, household questionnaires and an observation checklist. Quantitative data was analysed using SPSS and Microsoft Excel while qualitative data was analysed using the thematic approach. Results showed that the technical factors which are influencing sustainability are age of the water facility, frequency of carrying out preventive maintenance and existence of external support. Regression analysis showed a positive linear correlation between age and breakdown frequency (R2 = 0.46) and the odds of obtaining a breakdown decreased as the frequency of preventive maintenance increased. User communities were contributing inadequate O&M funds resulting in long downtimes. Non-functionality of WPCs negatively influenced sustainability. The study recommends training of user communities on CBM and technical skills.