Applications
Already know what you need? Here’s a handy bank of all our application forms in PDF format so you can quickly access the ones you need:
Application forms
Maps of water pipes and sewers
Download
144.5kB, PDF
Drainage and water searches
Download
65.6kB, PDF
New water connections - large diameter (63mm)
Download
442kB, PDF
New water main
Download
118.5kB, PDF
Diverting or abandoning a water main
Download
147.2kB, PDF
Adopting existing sewerage
Download
86.3kB, PDF
Requisition a public sewer and or lateral drain
Download
114.2kB, PDF
New water connection
Download
49.3kB, PDF
New sewer connection
Download
26.9kB, PDF
Public sewer adoption
Download
24.7kB, PDF
Public sewer diversion
Download
24.9kB, PDF
Build over sewer self certification
Download
31.2kB, PDF
Build over sewer full application
Download
28kB, PDF
If you don’t want to submit your form online, please either email these to developer.services@dwrcymru.com or post them to:
Dŵr Cymru Welsh Water
PO Box 3146
Linea
Fortran Road
Cardiff
CF30 0EH
If you’re posting the forms to us, make sure you also include your payment made payable to Dŵr Cymru Welsh Water. Incorrect postage costs could result in your application form being returned by the Post Office, so check the weight and postage costs beforehand.