The Water Efficiency Calculator for New Dwellings

This calculator has been developed in accordance with the Government's National Calculation Methodology for assessing water efficiency in new dwellings in support of:

The Code for Sustainable Homes, April 2009 and subsequent versions
Building Regulations Approved Document Part G, 2009.

Click here to start using the calculator.

If you require any further information, please contact us at partgcalculator@wrcgroup.com

Please check the System Requirements page for compatibility information.