This new edition has been thoroughly updated to take account of changes to the Building Regulations, including changes to the following approved documents: Part F: Ventilation; Part G: Sanitation, hot water safety and water efficiency; Part H: Drainage and waste disposal; Part L: Conservation of fuel and power and Part P: Electrical safety. A significant new section on energy conservation & sustainability has been added, and additional related material introduced where relevant. The extensive coverage with new, full colour illustrations to enhance legibility and understanding, and the emphasis on safety in the work place ensure this remains the definitive single volume for both student and trained plumbers.