Include volumetric sewer charges in leak costs
A utility uses the same metered volume for water at 2.50/m³ and sewer at 3.50/m³. A homeowner compares the water line alone with both lines for an eight-day leak.
Open CalculatorInputs and calculation
| Tool input | Value |
|---|---|
| Currency | USD |
| Volume or billing unit | m³ |
| Flow (L/min) | 0.25 |
| Days or equivalent sessions | 8 |
| Price per billing unit (USD) | 2.5 |
0.25 L/min × 1,440 min/day × 8 days = 2880 L. Divide by 1,000 for m³, then multiply by 2.5 for USD 7.20.
Tool result · USD 7.20
| Tool input | Value |
|---|---|
| Currency | USD |
| Volume or billing unit | m³ |
| Flow (L/min) | 0.25 |
| Days or equivalent sessions | 8 |
| Price per billing unit (USD) | 6 |
0.25 L/min × 1,440 min/day × 8 days = 2880 L. Divide by 1,000 for m³, then multiply by 6 for USD 17.28.
Tool result · USD 17.28
What the comparison shows
The extra 10.08 is the sewer line. If the supplier grants a sewer adjustment, the payable increment can move toward the water-only estimate.
Assumptions and limits
Combine rates only when the supplier bills both against the same volume. Leak credits and sewer caps can change the real marginal cost.