Rainwater Harvesting
Rainwater Harvesting
Rainwater harvesting is most effective as part of an integrated approach to water management – one that also looks at groundwater health and recharge, reuse of treated wastewater from STPs, and efficiency measures that reduce demand at source. The right mix of interventions depends on your site, your water balance, and local hydrogeology.
Rainwater Harvesting Calculator
Use this calculator to get a quick read on your site’s rainwater harvesting potential – how much rainfall your rooftop, paved areas, and landscape can yield annually, what storage capacity is needed to meet BWSSB requirements, and how harvested rainwater compares to your current water supply. It is designed for housing communities, commercial campuses, and institutions to self-assess their endowment and capacity before deciding on next steps.