Investigation of rainwater quality at different rooftop types: a case study at the large Islamic Boarding School in Madura

Rainwater is an alternative water resource and it is relatively clean. In addition, it can be categorized as a free source and can be collected in a considerable quantity from roof catchments. The aim of this study was to investigate the rainwater quality collected in the Islamic Boarding School of Adduriyah Bangkes, Indonesia. Various water samples including rainfall and rainwater falling on different rooftop types such as clay tile roof, metal sheet tile roof, old metal sheet tile roof, and concrete tile roof were collected and analyzed. In this study, physical and chemical properties of all water samples were examined. In general, the study observed that the quality of rainwater was relatively clean and can be possible to be used for several non-potable purposes.