Rainwater harvesting systems collect and store precipitation from rooftops for non-potable uses, such as irrigation, toilet flushing, or cooling systems. By capturing rainwater, these systems help reduce the demand on municipal water supplies and lower stormwater runoff, which can cause flooding and erosion. Stored water serves as a buffer during periods of drought and can be easily integrated into both new and existing buildings. This approach not only mitigates utility costs but also supports environmental stewardship. The implementation of such systems signals a proactive response to shifting weather patterns and growing concerns about water scarcity.