About the Water Conservation Savings Calculator
What is the Water Conservation Savings Calculator?
This water saving calculator shows how much water and money small changes save – tap aerators, dual-flush toilets, shorter showers and fixing drips.
It compares your use with the BIS urban norm of 135 litres per person per day.
How to use the Water Conservation Savings Calculator
- People in the Household (sample: 4)
- Current Use per Person (litres a day) (sample: 150)
- Reduction from Habits and Fixtures (%) (sample: 20)
- Dripping Taps to Fix (sample: 1)
- Water Cost (₹ per kilolitre) (sample: 45)
- Pumping Energy (kWh per kilolitre) (sample: 0.5)
- Electricity Rate (₹/kWh) (sample: 8)
- Press Calculate Water Savings (results also refresh as you type). The result card shows the Water Saved per Year, along with Water saved per day, Water bill saved per year, Pumping electricity saved per year and New use per person.
Formula used
Saved per day = People × Litres per person × Reduction % + 30 litres × Dripping taps fixed
Worked example
These are the sample values already filled in the calculator above, and the result it returns for them:
| Input | Sample value |
|---|---|
| People in the Household | 4 |
| Current Use per Person (litres a day) | 150 |
| Reduction from Habits and Fixtures (%) | 20 |
| Dripping Taps to Fix | 1 |
| Water Cost (₹ per kilolitre) | 45 |
| Pumping Energy (kWh per kilolitre) | 0.5 |
| Electricity Rate (₹/kWh) | 8 |
| Result | Value |
|---|---|
| Water Saved per Year | 54.8 kilolitres |
| Water saved per day | 150 litres |
| Water bill saved per year | ₹2,464 |
| Pumping electricity saved per year | ₹219 |
| New use per person | 113 litres/day |
| Compared with the 135 L norm | Within the BIS norm |
| Equal to | 5.5 tanker loads of 10,000 litres |
Tips for using the Water Conservation Savings Calculator
- A bucket bath uses about 20 litres; a 10-minute shower can use 100.
- Reuse RO reject water for mopping, flushing or plants.