S.R. 50-3:2021

Foreword
Introduction
1 Scope
2 References
3 Terms and definitions
4 Service pipe
5 Water supply system requirements
6 Pipework and fittings
7 Pipe sizing
8 Legionella disease
9 Cold-water supply system
10 Hot water systems
11 Unvented hot-water systems
12 Solar thermal water heating
13 Appliances using water
14 Water draw-offs
15 Electrical requirements
16 Multi-unit dwellings
17 Installation
18 Documentation for installation, operation, maintenance and use
19 Commissioning
Annex A (normative) Pressure safety valves
Annex B (normative) Water boosting
Annex C (normative) Water tightness test procedure
Annex D (normative) Pneumatic leak testing
Annex E (informative) Guidance on the use of I.S. EN 1717:2000 in the Irish water supply system
Annex F (informative) Electrical considerations
Annex G (informative) Pipe sizing I.S. EN 806-3 method
Annex H (informative) Pipe sizing - BS 8558 method - Determination of flowrates
Annex I (informative) Water conditioning
Bibliography

This Code of Practice specifies the requirements for and gives recommendations on the design, installation, alteration, testing, maintenance and operation of potable water supply systems within dwellings and for pipework outside of dwellings but within the curtilages.
This Code of Practice is intended for use by engineers, architects, surveyors, contractors, installers and inspection authorities involved in the supply, installation, operation and maintenance of hot-water and cold-water supply systems in buildings.