England & Wales Building Regulations: Part G: Sanitation, hot water safety and water efficiency - A summary of the requirements and amendments (Version 1)

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The 1992 / 2000 edition of Approved Document G (Part G) was simply entitled Hygiene. The much longer revised title indicates two areas where the scope of Part G has increased, namely water efficiency and hot water safety.

Being an almost complete re-write, the 2009 edition contains a number of significant changes, the most notable of which include the differentiation between wholesome (drinking quality) and non-wholesome water, the requirement of temperature limiting taps to prevent scolding and the choice of new water calculation tool to regulate water consumption

This Construction Briefing gives readers a broad summary of the contents of the new part G, explains why the changes were necessary and provides commentary on the practical implications of the changes.

Contents:

  • General guidance 
  • Cold water supply (G1)
  • Water efficiency (G2 and regulation 17K)
  • Water calculation tool
    • Table 1: Water calculator for new dwellings
  • Hot water and supply and systems (G3)
  • Sanitary conveniences and washing facilities (G4)

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