Water Bill Calculator

NWSDB charges progressive blocks: the first 5 m³ at Rs. 50 each, the next 5 at Rs. 70, then Rs. 90, Rs. 100, Rs. 120, Rs. 150, Rs. 170, Rs. 195, Rs. 225, Rs. 250, and anything above 100 m³ at Rs. 280. The service charge is the one for the highest block you reach — Rs. 300 up to 15 m³, rising to Rs. 4,500 above 100 m³. Then 18% VAT is added to usage + service. The breakdown above shows every block.

A family of four typically uses 15–25 m³ a month — around Rs. 1,500–2,900 including VAT. A single person or a couple often uses under 10 m³. A garden, a swimming pool, or washing vehicles at home can push usage well above 30 m³, where the rates and the service charge both jump.

Three usual reasons. A leak — a running toilet cistern or a dripping tap can waste several cubic metres a month without anyone noticing. An estimated reading — if the meter reader could not reach your meter, the bill is estimated and corrected on the next actual reading. And the blocks — crossing into a higher block raises the rate on those extra units and can raise the service charge too, so a small jump in usage can mean a bigger jump in the bill.