One monsoon, planned well
A 10,000 m² campus roof in Mumbai receives roughly 12 million litres of rain a year. With modest filter chambers and recharge pits, 60% can return to the aquifer instead of flooding the basement and buying municipal water all summer.
The payback math: harvesting 50 lakh litres a year against tanker and municipal rates typically repays the engineering investment within 3–5 monsoons — before you count the green-building credits and the flood damage you never had.
Want the numbers for your roof?
Send us your catchment area and we'll return a sizing sheet, water-yield estimate and indicative cost — free.