is the primary British Standard providing guidance on the design, installation, testing, and maintenance of services supplying water for domestic use within buildings. Published by the British Standards Institution (BSI) , it serves as complementary guidance to the European standard BS EN 806 . Core Purpose of BS 8558
BS 8558 is the primary code of practice in the United Kingdom for the design and installation of water supply systems in buildings. It provides comprehensive guidance on how to comply with the Water Supply (Water Fittings) Regulations 1999. While often searched for as a free PDF, it is a copyrighted document sold by the British Standards Institution (BSI). A critical component of this standard involves the control of water temperatures—specifically "hot" water—to prevent the growth of Legionella bacteria and scalding injuries. bs 8558 pdf hot
: It covers everything from initial pipe sizing and material selection to the long-term testing and operation of both hot and cold water systems. Key Highlights for Hot Water Systems is the primary British Standard providing guidance on
The standard ensures that domestic water systems—both hot and cold—are safe, hygienic, and functional. It formally replaced , which was withdrawn in 2012. Key Guidance for Hot Water Systems It provides comprehensive guidance on how to comply
Building owners, facilities managers, and installers must adhere to these guidelines to demonstrate regulatory compliance. Key maintenance tasks include:
: While high temperatures kill bacteria, they increase the risk of burns. The standard provides guidance on the use of Thermostatic Mixing Valves (TMVs) to blend hot and cold water to a safe temperature (typically between 38°C and 46°C depending on the application) just before it reaches the user. Key Provisions for Hot Water Services
Part 2: The control of legionella bacteria in hot and cold water systems