Building Regulations Part G: Complete Guide to Sanitation, Hot Water & Water Efficiency
October 2, 2026
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Building Regulations Part G covers sanitation, hot water safety and water efficiency in England. This homeowner guide explains G1 to G6, including cold water supply, water efficiency limits, hot water temperature control, bathrooms, toilets and kitchen sinks, plus how Part G works alongside drainage, ventilation and Building Control requirements.
