Formula
Gross leak volume = gpm × 60 × hours/day × days avoided. Water saved = gross volume × repair effectiveness. Utility savings = water saved ÷ 1,000 × rate.
What the result means
Water saved reflects only the portion of flow the repair actually eliminates during the avoided leak period. Cost savings use the entered marginal water and sewer rate and exclude repair labor, damage, and production effects.
Use the marginal volumetric rate from the bill. Fixed service charges generally do not fall when consumption decreases.