Building a house and sometimes even an extension will involve the water supply or the sewerage system. This may be a simple connection, a diversion, or need permission to build over a sewer.

Southern Water provides a complete service for house builders and developers. On this site are a range of forms and guidance notes required for any matters related to the Southern Water sewerage and water networks. You will also find contact details for our Network Development team which, in partnership with WS Atkins, manages the processes.

Housebuilders should be aware that legislation being introduced to cover the adoption of new sewers and lateral drains will affect the application process. Please click here for more information.