250 flats 4 lakh rs 3 january 29 2025 20 people 1000 litres rs 20 rs 50000 rs 40000 rs 400 apartments confirming blanket mandate apartment built ground reality government claims voiced concerns argued residents recycled 1000 times mandated enforcement rainwater harvesting solar power significant portion enormous power 1000 square feet builtup area square metre prorata charges legal measures residents hesitate bengaluru due water management weak water pump water borewell water added source hidden costs additional costs water supply official added cauvery water costs bangalore water supply bwssb official acknowledged cauvery water due governing council member sewerage board bwssb newer apartments recognised bangalore apartments federation added vidya goggi high upfront costs service gaps ubramanian make sustainable choices burning fossil fuels