Water treatment/ CALCULATOR

Water-softener regeneration and salt estimate

Relate hardness load, daily treated volume and usable exchange capacity to an estimated regeneration interval.

Feed-water hardness as CaCO₃mg/LUse a representative laboratory or validated field result expressed as mg/L as calcium carbonate.

Daily softened-water useL/dayExclude water intentionally bypassed around the softener.

Rated working capacity at chosen salt dosekg as CaCO₃Use the manufacturer capacity for the programmed salt setting, not a maximum marketing figure.

Capacity reserve%Capacity intentionally held back for variable demand and measurement uncertainty.

Salt used per regenerationkg/cycleUse the programmed salt dose or a measured refill history.

Water used per regenerationL/cycleUse the equipment rating for the actual cycle and settings.

Daily hardness load

100 g/day

Estimated treated volume per cycle

10.2 m³

Estimated days between regenerations

25.5 days

Estimated regenerations per year

14.3 cycles/year

Estimated salt use per year

43 kg/year

Estimated regeneration water per year

2.1 m³/year

Constant hardness and daily softened-water use, with the stated working capacity available at the chosen salt setting. The estimate excludes iron, manganese and other competing ions, leakage targets, fouling, variable reserve logic, calendar overrides and brine-system faults. Manufacturer programming and measured outlet hardness govern operation.

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