Wastewater services
We're here to help you get connected to the public sewer network. Below, you'll be able to learn more about all the wastewater services we can offer.
I need help with...
Building over a sewer
Learn more about why you should consider any nearby sewers while you're planning your project, and how to submit a build over application (Section SN18).
Sewer connection
If you're building a house extension, a new home or a commercial building, or simply making changes to your existing drainage, you may need a new wastewater connection to our sewer network (Section 106).
Sewer adoptions
We'll help guide you through the process of applying for the adoption of a new sewer or pumping station (Section 104), so it becomes part of our public sewer network.
First time sewerage scheme
If your property or community relies on private sewer systems, like septic tanks, and they’re causing problems for you or the environment, you may be able to apply for a first-time sewerage scheme (Section 101a).
Sewer diversion
If one of our sewers runs near your planned works, you may need to divert or change it. Here, we’ll take you through the process of applying for a developer-led or Southern Water-led sewer diversion.
Sewer requisitions
If your site doesn’t have easy access to our wastewater network, you can apply for a sewer requisition (Section 98) through us. Here you can find out about the application process for a new sewer pipe.
New Appointment Variations
Here, we'll explain what New Appointment and Variations (NAVs) are, how they work, and how they can make a bulk water supply or bulk wastewater application.
Water services
As well as our wastewater services, we can also help you connect your project to the public water supply.
That might mean applying for a new water connection, installing a new water main for your site, or requesting changes to one of our existing mains.
