Smart Rainwater
Harvesting System for Ubarn Area

An IoT-integrated smart rainwater harvesting system designed to mitigate urban flooding and water scarcity by automating the collection, purification, and storage of rainwater for non-potable household use. The system utilizes a first-flush diverter, sand and gravel filtration, and an underground concrete storage tank, all seamlessly controlled and monitored in real-time via an ESP32 microcontroller and smart valves.

The development process was driven by comprehensive background research and a comparative analysis of multiple sustainable engineering solutions. Special engineering focus was placed on optimizing sustainable material selection, establishing accurate project cost estimations, and designing an automated collection and distribution workflow to ensure both economic feasibility and environmental sustainability in urban environments.

• IoT & Smart Automation: Integrated an ESP32 microcontroller with rain and water level sensors to enable real-time monitoring and automated control of smart valves and water pumps.
• Sustainable Filtration & Storage: Utilized a first-flush diverter alongside a sand and gravel filtration system to purify rainwater before safely storing it in an underground concrete tank.
• Resource & Cost Optimization: Conducted detailed financial planning by developing comprehensive cost estimation tables and selecting economically viable, sustainable construction materials.
• Technical Workflow Design: Architected and documented the complete system workflow, detailing the mechanical processes from rooftop rainwater collection to smart distribution for non-potable urban use.
• Remote Accessibility: Facilitated cloud-based monitoring through a Wi-Fi module, allowing users to track system performance, rainfall intensity, and tank levels via a mobile interface.