Check a water spike against the meter
A household sees water use rise from 12 to 19 m³ over comparable periods. The extra metered water may explain the entire increase without any change in fixed charges.
Open CalculatorInputs and calculation
| Tool input | Value |
|---|---|
| Currency | USD |
| Utility | Water |
| Volume or billing unit | m³ |
| Previous usage | 12 |
| Current usage | 19 |
| Previous flat rate (USD/unit) | 3 |
| Current flat rate (USD/unit) | 3 |
| Previous bill (USD) | 44 |
| Current bill (USD) | 65 |
Usage: (19 − 12) × 3 = 21. Rate: 19 × (3 − 3) = 0. Actual bill difference: 65 − 44 = 21. Residual: 21 − (21 + 0) = 0. All effects are in USD.
Tool result · USD 21.00
| Tool input | Value |
|---|---|
| Currency | USD |
| Utility | Water |
| Volume or billing unit | m³ |
| Previous usage | 12 |
| Current usage | 12 |
| Previous flat rate (USD/unit) | 3 |
| Current flat rate (USD/unit) | 3 |
| Previous bill (USD) | 44 |
| Current bill (USD) | 44 |
Usage: (12 − 12) × 3 = 0. Rate: 12 × (3 − 3) = 0. Actual bill difference: 44 − 44 = 0. Residual: 0 − (0 + 0) = 0. All effects are in USD.
Tool result · USD 0.00
What the comparison shows
The 21 increase follows directly from the additional 7 m³. Use a meter observation or measured leak rate to test a specific explanation.
Assumptions and limits
The bill can support the metered increase. A leak, garden watering and extra guests remain possible until checked independently.