In our 'Developers Guide' you will find information about how to apply for and obtain a water supply or a connection to the public sewerage system and what information we will need from you.

The installation of water mains and services has traditionally always been undertaken directly by Water Companies or their contractors. Read our 'Self-lay supply of mains and services policy' to find out about how other organisations can now undertake this work.

Dwr Cymru Welsh Water will require all proposed installers to be members of the Lloyd’s Register Water Registration Scheme. Proof of the accreditation will be required at the time of application. To apply for accreditation please use the following link:- www.lr.org/market_sector/utilities/wirs/index.htm