Climate variability and rapid population growth are exacerbating global freshwater scarcity, particularly in regions vulnerable to drought and floods. Many climate- impacted communities lack access to sustainable and resilient water infrastructure, leading to over-reliance on dwindling freshwater supplies. The Nature based water solution for climate change extremities addresses the pressing challenges of water scarcity/flooding in climate stressed regions through an innovative, low-cost solution. The system harnesses renewable solar energy to drive a compact, modular water recycling unit capable of treating greywater, and water runoff for safe reuse. This system integrate four key- stages; solar-driven photocatalysis, biofiltration, solar-powered circulation and microbial disinfection to purify greywater and runoff into WHO compliant drinking water, suitable for both domestic and agricultural use. The system features a prototype photocatalytic reactor coated with TiO2, a water hyacinth biofilter, a 9W solar panel for powering the 12v submersible pump, and Chlorine dosing for disinfection tank, all mounted on the floating platform of recycled plastic bottles and condemned plastic table.

In a recent visit to Oko, a rural community in Delta state. The River Niger, being the primary water source for the community, is heavily polluted by upstream urban runoff, industrial waste, and seasonal flooding, posing health risk and limiting water availability for household and agricultural use. Hence, the concern to proffer a solution to this water challenge came up, using easily accessed materials and nature based solution.

The uniqueness of this project is its innovative integration of climate-adaptive design and local resource utilization, which directly addresses the community’s unique challenges while setting a scalable precedent for sustainable water management in riverine regions.