New water connections


There are two types of water connection: new connections and replacement connections. The first thing you need to do is identify whether you need a new connection or a replacement connection.

You might need a new water connection if you are:

  • building a new property
  • building onto an existing property (e.g. an extension, granny flat or annexe)
  • in need of a temporary building supply
  • converting a property into multiple units with individual supplies
  • converting a property that was once used for a different purpose (for example, converting a barn or garage into a house/home)
  • installing a fire apparatus (e.g. a fire sprinkler)
  • in need of a supply for irrigation purposes
  • moving from a private supply

A replacement water supply is needed if:

  • your water pressure is low and you require a larger supply
  • you are separating a shared supply
  • you are converting a property into multiple units with a shared supply

If you’re building a new home or commercial property (such as a shop, office or industrial building), unless you’re planning on harvesting rainwater, you will probably need a new connection to our water main.

For commercial buildings, if they need a large amount of water, especially water used in industrial processing, you may need a large water connection.

If you have any queries on the process, our detailed guidance notes should be able to help.

For new fire apparatus (e.g. sprinkler)

  • This is only relevant if you are building a new property or converting an existing property in Wales.
  • In February 2011, the Welsh Government implemented the Domestic Fire Safety (Wales) Measure 2011, making fire sprinkler systems mandatory in all new domestic properties. Find out more by reading our guidelines.

For several buildings/a development site

  • If you’re building several buildings, you can formally request a water main from us. More details can be found on our new water main page.

How much will it cost?

An initial application fee
This is an upfront non-refundable fee, to be paid on application, using a valid credit or debit card. Once you come to pay the connection charge, we’ll then deduct the application fee, so you’ll just have to pay the difference:

  • A standard connection is £77+VAT per application. The quote you then receive will be valid for six months. After this point you will have to pay a new application fee. 
  • A larger connection of over 63mm (where a dedicated water supply is needed for firefighting purposes) is £2000+VAT per application

A connection charge

  • For standard sized connections, based on the amount of work necessary to connect you to our water network, our connection charges range from £375+VAT to £1961+VAT. There could also be additional fees such as where additional meterage is needed to bring the service pipe up to the connection point. You can find out more information on this from page 9 onwards of our schedule of charges. VAT is only applicable where the properties are not exempt from VAT.
  • For larger connections, we will build up a bespoke quote. VAT is only applicable where the properties are not exempt from VAT.

A water infrastructure charge

This is a one-off charge:

  • £400 per property for standard connections
  • £400 x relevant multiplier for larger connections (you can find details of our multipliers on pages 22-23 of our schedule of charges)

A waste infrastructure charge

This is a one-off charge applicable for properties who are also connecting to our sewerage system and opt for a standard new water connection:

  • £400 per property for standard connections
  • £400 x relevant multiplier for larger connections (you can find details of our multipliers on pages 22-23 of our schedule of charges)

The infrastructure charges are set by our regulator Ofwat.

As a not for profit company, our charges are based on the cost of delivering the service only.

For information on our charges, visit our schedule of charges here.

 

 

Don’t forget about sewers

  • If you’re building a new house or several houses, and you’re applying for a new water connection, you’ll probably need to apply for your new sewers to be adopted and connected too.
  • If you’re connecting to a sewer outside of your property boundary, you’ll probably need to get an agreement from us that we will adopt your sewers before they are built, due to Welsh Government regulation. You can find out more on our sewer connections page.