If you live in a terraced property, you may have shared supply. If you are not sure, try looking for the external stop tap which is usually located in the pavement or on the boundary of your property). If there is an external stop tap for every house then you are on single supply. If there is only one external stop tap for a block of houses then you share a supply with your neighbours.

If you're experiencing intermittent poor flow, you could be on a shared supply with your neighbours and may benefit from a separation. If none of the below bullet points are applicable please complete this application form.

If any of the below bullet points are applicable you will need to complete a new connection application form. To find out more on how to apply go back to our home page and choose the relevant development type.  

New premises   

• A premise being converted into additional units (e.g. House converted into flats)   
  
• A barn conversion   
  
• Commercial premises   
  
• Your Hafren Dyfrdwy account is in arrears or we have no occupier account for the property   
  
• The existing pipe is not shared   
  
• You have not separated from the previous shared supply   
  
• The building is undergoing renovation by a developer or the building is undergoing change of use   
  
• The required company owned service pipe exceeds 25mm outside diameter   
  
• The connection is required in a different position to the original company owned service pipe   
  
• The property is not linked to an existing Hafren Dyfrdwy account   
  
• The property is not occupied. 
  
• If none of the above are applicable you can view how to test your flow and our application process below.