Estimate annual water savings from a water treatment reuse or efficiency project after accounting for the targeted share, process recovery, delivery efficiency, and operating schedule.
The main result is a planning estimate for annual usable water savings. Review the secondary values to verify that the implied flow, volume, or cost basis matches the intended operating case.
Planning estimate only. Site conditions, feedwater quality, permits, equipment curves, redundancy, and applicable engineering standards may change the final design.
At 500 m³/day, 25% targeted reduction, 80% recovery, 95% delivery efficiency, and 350 days, savings equal 33,250 m³/year.
Use the metered or otherwise documented volume that would be consumed without the reuse or efficiency project.
Not every recoverable gallon becomes usable product water. Efficiency accounts for process losses and unavailable recovered water.
It shows water savings only. Add avoided sewer or discharge charges separately if they apply.
No. The calculator rejects a project reduction above 100% and caps usable savings through the entered recovery and efficiency factors.
Use actual operating days and a representative daily baseline, or calculate each season separately and add the results.
| Variable | Unit | Use |
|---|---|---|
| Baseline water use | m³/day | Use without the proposed project. |
| Avoidable or replaced share | % | Share targeted for replacement or reduction. |
| Recovery rate | % | Recovered product from targeted flow. |
| Delivery efficiency | % | Usable share after distribution losses. |
| Operating days | days/year | Annual days in operation. |