| Section | Title | Key Focus | | :--- | :--- | :--- | | | Scope, Normative References | Defines legal context and linked docs (WRAS, EN 806). | | 4 | Design Principles | Water demand estimation, flow rates, and pressure losses. | | 5 | Materials & Components | Pipe materials (copper, PEX, MDPE), valves, backflow prevention. | | 6 | Installation | Trenching, supports, access panels, fire safety. | | 7 | Testing & Commissioning | Pressure testing, flushing, disinfection (chlorination). | | 8 | Maintenance | Inspection regimes, Legionella sampling, scale prevention. | | Annex A | Pipe Sizing Tables | Velocity-based sizing for copper and plastic systems. | | Annex B | Disinfection Methods | Step-by-step chlorination for 50ppm and 1000ppm. |
Protocols for the flushing and chemical disinfection of water systems, including new installations and storage tanks.
Whether you are a building services engineer, a plumber, a facilities manager, or looking to download a for a project, understanding this standard is vital for legal compliance and public health. What is BS 8558?
The is not just a file; it is a professional tool. It ensures that the water coming out of your taps is safe, the pipes won't burst, and the system is resilient against bacteria like Legionella . bs 8558 pdf
The Ultimate Guide to BS 8558: Design, Installation, and Maintenance of Domestic Water Services
To recap – is the authoritative UK guide for water services in buildings. While the idea of a free BS 8558 PDF is tempting, the only safe, legally admissible, and accurate copies are purchased directly from BSI or licensed resellers.
Originally, the design of UK water systems was governed primarily by BS 6700. In 2012, European standards (BS EN 806 series) were introduced to harmonize practices across Europe. However, because European standards must accommodate many different national water regulations, they often lack specific details required for regional compliance. | Section | Title | Key Focus |
UK Health and Safety Executive (HSE) guidance for Legionella control which BS 8558 directly supports. When to Consult a BS 8558 Expert
is the current British Standard providing comprehensive guidance on the design, installation, testing, and maintenance of services supplying water for domestic use.
BS 8558 emphasizes that systems must be designed to avoid stagnant water, which can lead to bacterial growth. | | 6 | Installation | Trenching, supports,
Performing commissioning and disinfection services . Designers & Engineers: Planning new water installations.
Yes, but for healthcare (HBN 00-10), you must use BS 8558 in conjunction with HTM 04-01 (Health Technical Memorandum). BS 8558 provides the base design; HTMs add clinical risk requirements.
Maintaining correct temperature regimes (keeping cold water cold and hot water hot) to minimize the risk of Legionella bacteria.
Procedures for maintaining water quality and preventing scale buildup. BS 8558 vs. BS EN 806
BS 8558 remains an essential reference document for the UK water industry. It bridges the gap between high-level legal regulations and the practical "nuts and bolts" of plumbing engineering. Whether designing a new high-rise residential block or maintaining a commercial office building, adherence to the guidelines in BS 8558