Assessment of Household Rainwater Harvesting Systems in the Southwestern Coastal Region of Bangladesh: Existing Practices and Household Perception

Abstract

This study aims to assess the post-installation rainwater management issues associated with household RWH systems in the southwestern coastal regions of Bangladesh. A face-to-face questionnaire survey (including free listing) was administered to over 300 households in the Khulna and Satkhira districts to understand the water consumption behavior of users, operation and maintenance of the RWH system components, governance and capacity-building needs, and overall perception. It was found that the current capacity of most household storage tanks is insufficient to meet the year-round water demands (cited by 151 users; Smith’s Salience Index (SSI) = 0.671), and around 53% of the users relied on another water source besides the RWH system. The users frequently cleaned various components of the RWH system, although they did not pay much attention to cleaning the roof catchment. Most users did not have sufficient knowledge of water treatment methods (cited by 10 users; SSI = 0.033) or water quality testing protocol (cited by 29 users; SSI = 0.084). Proximity to the house (cited 222 times by the users, SSI = 0.589) is considered the primary benefit of the RWH system. The absence of adequate functional components (cited by 56 users; SSI = 0.170) and having to share water with other households (cited by 23 users; SSI = 0.068) were highlighted as the two main problems associated with the use of the RWH system. The users also highlighted the lack of training on operation and maintenance (O&M) and the absence of monitoring support. This study provides clues to strengthening existing RWH system intervention programs in the water-challenged regions of Bangladesh.