Southern Assessors

Part G Water Calculations

The latest building regulations set a maximum of 125 litres per person / day for internal water use. This is enforced by Approved Document G (sanitation, hot water safety and water efficiency).

We can provide a full report and certificate to help you comply with Building Regulations,

based on "The Water Efficiency Calculator for New Dwellings" - The Governments national calculation methodology.

Which will include-

  • Notice of Water Efficiency - as required by 37(1)
  • Summary page together with all corresponding completed tables

part g water calculations uk