I&I Calculator

Calculate infiltration and inflow allowances.

Linear measurement in the specified unit.
miles
Distance across a circle through its center.
in
Number of items or instances.
Enter the design rainfall value for this calculation.
in/hr

Results

Infiltration:
Calculated ratio between values.
-GPD
Inflow:
Calculated flow rate.
-GPD
Total I&I:
Sum of all calculated values.
-GPD
Reference: AWWA/EPA Standards. EPA I&I guidance.