Long-Term Evaluation of Water Quality and Quantity in a Residential Integrated Rainwater and Greywater Recycling System with Simultaneous Storage and Treatment

High Resolution Image Download MS PowerPoint Slide The present study assessed the operational performance of an integrated rainwater and greywater recycling system (IRGRS) installed in a single-family residence in the town of Rio Verde, central Brazil. The methodology included evaluating both the quantity and quality of water produced by the system over a 16 month monitoring period, with a specific focus on contrasting climatic conditions (well-defined rainy and dry seasons). Operational adjustments were made to the treatment process to improve system performance. The IRGRS integrates rainwater harvesting and greywater pretreatment via a constructed wetland, continuous aeration, cartridge filtration, and ultraviolet disinfection. Water quality parameters remained within national and international reuse standards, with turbidity consistently below 5 NTU, COD under detection limits (