New Appointment and Variations (NAVs)

An unserved site will not include any existing water or sewer connections to our network. You can ask for a site status request by sending an email: newappointments@southernwater.co.uk. Or, you can request one in your NAV application. Within 21 days, we'll confirm whether we currently serve the site or not.

Fill in the online form using our GetConnected portal and pay your application fee. Please remember to pay your NAV application fee appropriate to the size of the development. We'll review your application and respond within five days to confirm that the documentation is complete or ask for more information.

Within 28 days, we will carry out a capacity check on our network and assess any connection costs and design. After this, we'll send you a Bulk Service Offer. The bulk discharge costs will be in line with the current charging arrangements. For NAV sites with onsite wastewater pumping stations, we offer a NAV pumping station discount. You can find more information on this in our Methodology of NAV charges and NAV Charging Arrangement documents.

If you're happy with the Bulk Service Offer, you can respond to us by accepting the offer via the GetConnected online dashboard. Once you have accepted, we'll put together the Bulk Service Agreement within 28 days and send it to you. You'll then need to sign the agreement and pay the bulk discharge connection costs.

You’ll need to submit S106 application information to request a sewer connection and send construction drawings. You should also include your contractor details in the ‘comments’ box. Please also provide: Copies of the drainage layout plan at 1:100 (or larger), showing the location of sewers and manholes on site and up to the connection point. A copy of planning consent. The site location plan at 1:1250 (or larger). We’ll check that your proposal meets our standards and will send our approval.

Now, you can carry out the work on site to connect to our sewer. At least two working days before the works, contact us to arrange an inspection.

Once we're happy that your wastewater connection complies with our requirements, we'll send you a completion letter. The connection will now be live, and you'll be responsible for the billing going forwards.