South West Water cannot give advice on the correct size water supply pipe you should install as part of your new water connection(s). If you are not sure which size pipe you require, we recommend contacting a Water Regulation Advisory Scheme (WRAS) approved water engineer or a plumber who should be able to help you with this information. For further information on WRAS approved contractors, please visit their website by clicking here.

Please use this next section of the online form to confirm how many connections you need and what size pipe in diameter you require. Please can you also confirm the plot numbers where applicable. For combined domestic and fire supplies, South West Water will install a standard 15mm meter. Please factor this into your design. South West Water will not accept any liability as a consequence of private systems, which haven’t taken this into account.