Asian Journal of Chemical Sciences

This study examines the impact of rusted roofing sheets on the quality of harvested rainwater, addressing its chemical composition, microbial contamination, and potential health risks. Rainwater harvesting is a crucial water source in many regions, but contamination from rusted metal roofs can compromise its safety. Provides an introduction to the research, highlighting the problem statement and the significance of understanding how rust affects rainwater quality. The study aims to analyze chemical leaching from rusted roofs, assess microbial contamination, and compare water from rusted and non-rusted surfaces. Presents a literature review on rainwater harvesting, discussing various roofing materials and their influence on water quality. It highlights key studies on the effects of iron, lead, and microbial contaminants leaching from corroded metal sheets, and regulatory standards by WHO and NSDWQ. Outlines the research methodology. Water samples were collected from Jalingo, Nigeria, focusing on free-fall rainwater and water in contact with rusted roofs. Various analytical techniques were used, including pH measurement, turbidity assessment, heavy metal spectrophotometry, and microbial culture analysis. Details the results and discussion. Findings indicate elevated levels of iron and lead in roof-contacted rainwater, exceeding WHO and NSDWQ standards. Microbial contamination was significantly higher in water collected from rusted roofing sheets, raising concerns about public health risks. So, therefore, rusted roofing sheets negatively affect rainwater quality, emphasizing the need for proper filtration and treatment before consumption. Recommendations include using corrosion-resistant roofing materials, regular roof maintenance, and public awareness programs to mitigate health hazards.