A. Water law is one area that is the responsibility of national parliaments. This means there are separate regulations and byelaws applying in each country within the UK.

Regulations and Byelaws

Copies of the Water Fittings Regulations and Scottish Water Byelaws including their schedules are available from Her Majesty’s Stationery Office (HMSO) part of The National Archives, and Scottish Water using the following links.

England and Wales - Statutory Instrument 1999 No. 1148 which has been amended under subsequent legislation.

S.I.1999 No.1148 – The Water Supply (Water Fittings) Regulations 1999

Amended under the following legislation:

S.I.1999 No.1506 – The Water Supply (Water Fittings) (Amendment) Regulations 1999

S.I.2005 No.2035 – The Water Act 2003 (Consequential and Supplementary Provisions)Regulations 2005

S.I.2013 No.1387 – The Construction Products Regulations 2013


The Water Supply (Water Fittings) (Scotland) Byelaws 2014

Northern Ireland – Statuary Rules 2009 No.255

S.R. 2009 No.255 - The Water Supply (Water Fittings) Regulations (Northern Ireland) 2009


The English Government (Defra) also published on the internet a guidance document relating to Schedules 1 and 2 of the regulations for use in England and Wales. However this guidance is recognised across the UK and is available using the following link.

Defra guidance to the regulations

The “Water Regulations Guide” includes the text of the Water Supply (Water Fittings) Regulations 1999 and Scottish Water Byelaws 2000. It also includes detailed Water Industry guidance and interpretations. We also provide other publications, most of which are free to download. In addition we also provide an enquiry service for general queries on these regulations and byelaws, for further information or advice contact us.

Water Suppliers do not provide a design service for installations, but they will try to answer individual queries from customers, designers, builders and installers about the interpretation of the regulations or byelaws.

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