What is a NAV?

New appointments and variations (NAVs) are companies who can be appointed to provide a water and/or sewerage service to customers in an area which was previously provided by South East Water.

These companies are appointed by Ofwat and have the same duties and responsibilities as any other statutory water company. For more information on becoming a NAV, or this application type please see guidance published on OfWat’s website.(opens in a new tab)

How to apply

Apply online using the Nav Enquiry form on this page, if you have any questions, give our friendly team a call and we’ll be happy to help.

Upload your documents (a site location plan showing the site boundary and highlighting the site entrance) alongside your application.

We will acknowledge receipt of your application within 5 days, if we need any more information from you during this time we will be in touch.

You will receive a site served / unserved status letter within 21 days.

We will provide a bulk supply offer letter within 28 days of receipt of the application form and all necessary information, this will include the capacity and assets in the area, expected pressure and flows to your site, the point of connection and the terms.

If you wish to proceed, make payment.

Upon request or acceptance of the quote we will issue the bulk supply agreement for you to sign within 28 days this will include the capacity and assets in the area, expected pressure and flows to your site, the point of connection and the terms, you will need to return a signed copy to proceed.


We will issue a written acknowledgement within 5 days of receipt of the returned bulk supply agreement.

We will provide a permanent supply connection within 90 days or no later than the date as agreed with the developer.

Application Forms

NAV Enquiry Form

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