Tool

Water usage calculator

Estimate peak and average daily water demand for a building type or specific outlet cluster.

Recommended protection device

Enter values and calculate to see a recommendation with the supporting regulation citation.

How to use this tool

STEP

Residential, healthcare, hospitality or a custom outlet cluster.

STEP

Peak simultaneous use, not the connected load.

STEP

Average daily and peak instantaneous flow for plant sizing.

Regulation guide

ED devices for Fluid Category 3 and the cases where they are no longer sufficient.

Sizing, materials and isolation strategy for protected wholesome supplies.

Reduced pressure zone valves — installation, AIM, annual testing and Fluid Category 4 protection.