In the midst of Bengaluru’s ongoing water crisis, Ganesh Shanbhag’s innovative rainwater harvesting (RWH) system has become a beacon of hope for over 300 apartment complexes. By helping communities reduce their reliance on costly water tankers, Ganesh is not only saving lakhs but also rejuvenating the city’s groundwater table.
The Problem: Water Scarcity and Rising Costs
Bengaluru residents have long struggled with water shortages due to depleting borewells and skyrocketing tanker prices. Faced with a similar crisis in his own apartment complex, Ganesh decided to take matters into his own hands.
The Solution: Rainwater Harvesting System
Ganesh’s RWH model is cost-effective and efficient, implemented for just Rs3 lakh in an apartment complex with 100 flats. The results were staggering – within two months, the community saved Rs2 lakh in water bills and significantly reduced their tanker dependency.
How the System Works
1. Catchment and Collection: Rainwater is collected from the rooftop via strategically placed PVC gutters and downpipes.
2. Initial Filtration: A ‘first flush’ mechanism diverts dirty water from the first rain, while a coarse mesh filter removes larger particles.
3. Advanced Filtration: Disc filters and multi-layered mesh filters eliminate finer impurities. Atmospheric ozone generators further purify the water.
4. Storage and Distribution: Filtered water is stored in underground tanks and pumped to overhead tanks for use.
5. Groundwater Recharge: Excess water is directed to a recharge pit, replenishing the local aquifer.
Impact on the Community
Ganesh’s initiative has not only saved money but also contributed to sustainable water management in a city grappling with a declining water table.
Driven by passion, Ganesh offers his expertise free of charge, helping other communities set up similar systems. He dedicates his weekends to assisting apartments facing water crises.
