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New Services

Our customers request new services for a variety of reasons. The standard charge for a new service is £1,629.00(2023). When installing a new service it is vital that you comply with the water byelaws.

A new service is installed by Guernsey Water and fitted by connecting onto the existing water main in the road, this service is then connected onto the pipework on your property boundary. Pipework on your property must be laid ahead of the new service installation by yourself, or by a private contractor on your behalf.

Apply for a New Service pdf icon The Installation Process [126kb] 


On occasion, Guernsey Water receives requests for new supplies where there may not be a existing water main in the road outside of the property boundary. On these occasions, following a re-evaluation of mains extensions across the Island in 2021, customers are provided with two options;

  • Enter Guernsey Water's mains extension program, should you choose this option, your connection will be graded against a scoring system which will then provide you with an approximate installation date. The charge for this option is £1,629.00. Installation date may be subject to change dependant on the need for any priority services.
  • Request a quote to self-fund the extension and subsequent connection. Should you choose this option, Guernsey Water will provide you with a quote and estimated installation date based on excavation and extension requirements, this will be paired with the connection fee of £1,629.00.

The Water Byelaws

The Water Byelaws (Guernsey) Ordinance 2003 was implemented so that Guernsey Water (and previously the States Water Board) would be able to set and enforce a number of regulations regarding the safe installation of plumbing services and equipment.

The Water Byelaws document was originally published as a hard copy document which could be purchased from Guernsey Water. It can also be downloaded.

  Pipework Ready? Let us know

These byelaws are extremely important - they are in place to protect the Island's water supply, and any contravention of them could lead to a fine.

As an example of what is covered by the byelaws, the diagram below demonstrates the correct relative position of utility services when installing or altering water pipes:

A byelaw diagram


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