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Connections Application Forms

SW employee chatting with customer;

The formal process of applying for new connections to water mains and waste water services is designed to allow for a clear understanding of your needs and how we can support them through our review and approval process.

Regardless of the scale or complexity of your development, from single house construction to larger scale housing construction, our application forms provide detailed guidance and support.
You can access all forms within the new connections process at the bottom of this page.

Application forms

All application forms are designed to provide detailed guidance, with background on any technical information or calculations requiring completion. You can find all the forms related to a connection application at the bottom of this page.

We highlight the importance of early consultation to all customers at the earliest stage of a development. We can be contacted informally for general support questions, regarding the process to obtain a new water or waste water connection, and this can even take place prior to your planning application being submitted.

To begin the more formal application process with us, you can complete our enquiry form. This should include as much information as possible to allow us to understand your plans, and to support a detailed response from us. This form to be used is the Pre Development Enquiry Form (PDE).

The PDE is intended to capture early details relating to your development plans, and will allow us to provide you with a response relating to the drainage or water demand of your site, and to provide you with early guidance that may influence the layout or design of your pipework or the points of connection for water and wastewater supplies.

Please be aware: any response provided at this stage is not a guarantee of water or wastewater capacity for our network, and you are still required to submit further formal applications.

Please contact  our business team on Freephone 0800 389 0379 or alternatively email We will be happy to assist you with your enquiry and direct you to the correct process to support these requests.

Design content with your application

Ensure that your applications are supported by appropriate design calculations. Design must include all the necessary consultations with your Local Authority, subsequent roads authorities, the Scottish Environment Protection Agency (SEPA), fire authorities and other relevant bodies. 

Designs should include any required diversions of our existing infrastructure, if you are already aware of the presence of a public asset within the boundary of your site. 

The published guidance documents: ‘Sewers for Scotland’ and ‘Water for Scotland’ are available on our website here.

Important: Scottish Water will normally process your application, and complete our design audit within 28 days of receipt of an acceptable application. This would require inclusion of all mandatory supporting information.

Water Byelaws compliance

It is important to consider The Water Supply (Water Fittings) (Scotland) Byelaws 2014 when planning a domestic development. These requirements apply to all plumbing systems, water fittings and appliances connected to the public water supply in Scotland. These standards ensure that water quality and public health are protected in both the property and the public water network

You have a choice of what option you wish to use to provide evidence of internal and external Water Byelaws compliance. The Water Byelaws (WB1) form will be sent to you with your technical audit quote. Please ensure you complete this form and send it to

A printable version of the WB1 form and an interactive version can be found at the bottom of the page.

For further information relating to the Domestic Development Water Byelaws process change please click here.

More information on Water Byelaws can be found here.

Track inspection

Once any pipework is installed, and in advance of any final connection to the public water or waste water network, we need to inspect the work before it is backfilled to ensure it meets with regulations. 

We have summarised the requirements for a water track inspection in the below document, so you know what we will be looking for when we arrive to carry out an inspection.

Ready for your track inspection?

Please review this checklist closely and ensure your site meets all criteria and is ready for inspection. This will ensure that when our inspectors attend, they can pass all pipework installed and there is no risk of an abortive visit being incurred. Once this inspection passes your water connection can then be programmed.

If you are not ready but simply need support or advice on-site, you can request a site visit from one our inspection team. All site inspection or visit requests can be scheduled by contacting our team. Full contact details can be obtained here.

Our Charges and Payment


Any charges in relation to our application process and the final connection to our infrastructure will be advised within our quotation process, after we have assessed your application and as part of the design audit response. Within this quotation we will confirm what these charges relate to, and the overall cost. We will also confirm within this correspondence, the required point of payment prior to your connection or connections being completed. 

Please be aware: 

a number of our charges should be paid before you plan to request your connection, and further details will be included in any separate invoices you receive from us. 
You must ensure that if you have a water and drainage application with our business team, all associated invoices must be paid before the water connection(s) can be completed.

For details of our charges please refer to our current Scheme of Charges document.


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Reasonable Cost Contributions - Dwellings 2019/20

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The Reasonable Cost Regulations prescribe the maximum contribution that Scottish Water should make towards the costs of providing new or enhancing existing water mains or sewers for household, commercial and industrial developments.

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Reasonable Cost Contributions - Non-Dwellings 2019/20

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Preview | Download

The Reasonable Cost Regulations prescribe the maximum contribution that Scottish Water should make towards the costs of providing new or enhancing existing water mains or sewers for household, commercial and industrial developments.