Water Bill Calculator India
Estimate your monthly water bill based on usage, connection type, and your city tariff slab. Supports Delhi, Mumbai, and general India rates.
About this calculator
Estimate your monthly water bill from the number of people and usage, with options for Delhi, Mumbai or a general tariff, and for domestic or commercial connections.
Water charges are usually slab-based and change often, so treat the result as an estimate.
How to use it
- Choose your region and connection type.
- Enter the number of people and monthly usage.
- Read the estimated bill.
How water bills work
A typical bill = volume charge (usage in kilolitres × slab rate) + fixed or sewerage charge, where sewerage is often a percentage of the water charge. One kilolitre is 1,000 litres. A person uses roughly 135 litres per day by the Indian urban norm, so 4 people use about 16 kilolitres a month. Tariffs vary by municipality and are revised periodically, so check your local board's notice.
Worked example
Usage estimate
| 4 people × 135 L × 30 days | 16.2 kilolitres a month |
| 2 people | about 8.1 kilolitres a month |
Tips and common mistakes
- Fix leaking taps; a drip can waste 20 litres a day.
- Install aerators and dual-flush cisterns.
- Use a bucket instead of a shower hose where possible.
- Check your meter readings monthly.
- Commercial rates are higher than domestic.
Frequently asked questions
How much water does a person use?
About 135 litres per day in urban India by planning norms.
What is a kilolitre?
1,000 litres.
Why is my bill different from the estimate?
Tariffs and slabs vary by city.
What is a sewerage charge?
A charge based on water consumption for waste disposal.
How can I cut my water bill?
Fix leaks and use efficient fittings.
Is it free?
Yes.