Greywater Treatment Sizing Calculator

Sizes greywater treatment systems for non-potable reuse applications per IPC Chapter 13.

Showers, lavs, laundry.
gallons/day
Maximum flow rate.
GPM
Treatment technology level.
Equalization/storage duration.

Results

Required Treatment Capacity-GPD
Storage Tank Volume-gallons
Estimated Filter Area-sq ft
References: IPC Chapter 13, NSF 350, IAPMO IGC 324