BS 8558 was introduced to bridge the gap between European requirements and UK legislation, such as the Water Supply (Water Fittings) Regulations. The current active version, , provides the detailed "how-to" framework that engineers, plumbers, and building managers need to implement the broader principles of BS EN 806 in the United Kingdom. Key Areas Covered in the Standard

If you are looking to update your compliance protocols or design a new domestic water network, ensuring your team has legal access to the current is your critical first step.

Implementing strict cleaning procedures, often involving chlorination, to eliminate construction debris and bio-films before the system enters service. 4. Operation and Maintenance

Understanding BS 8558: The British Standard for Precast Concrete Products

A critical phase covered by BS 8558 is the commissioning of new or altered water systems. Before a system is put into service, it must undergo rigorous testing to ensure safety and integrity. Pressure Testing

For example: BS EN 806 mentions backflow prevention generally. BS 8558 gives you the exact fluid categories (1 to 5) and shows you which mechanical device (e.g., a verified RPZ valve) is required for a Category 5 risk like a hospital dialysis unit.

A copy of BS 8558:2015 can be obtained from the British Standards Institution (BSI) website or through a BSI-approved distributor. The standard is available in various formats, including: