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Part G (Hygiene) »
Associated documents »

Associated documents

Water Efficiency Calculator for New Dwellings (PDF 220Kb).

This document sets out the Water Calculation Methodology for assessing the whole house water efficiency of new dwellings.

The latest document is the September 2009 version and replaces the previous May 2009 version.

The calculation method is to be used to assess compliance against the water performance targets in Building Regulations 17.K and the Code for Sustainable Homes now uses this calculator as the Assessment Methodology for WAT1.