Self lay
Self lay
As a developer you may choose to lay water mains yourself under a self-lay agreement with us.
As a developer you have 3 choices on how the Water mains and Services are installed on your Development site.
- You can ask Wessex Water to install the Water mains & Services
- You can use an Accredited Self lay provider (SLP) to install the Water mains & Services
- New Appointments and Variations (NAVs) - details about NAVs and how to apply
If you are choosing to lay water mains yourself by using an accredited self lay provider (SLP). A list of WIRS accredited SLPs can be found on the Lloyds Register. You can also familiarise yourself with the process by reading through the Water Sector Guidance (WSG).
If you are using a WIRS Accredited Designer to produce a Water design for approval then please select the Point of Connection application, this will allow you to estimate costs, determine the scope of the Self-Lay Works and produce a design using a WIRS Accredited Designer that Wessex water will approve (Subject to meeting our Construction Design Specifications (DCS) requirements located below)
Online applications
Application forms
- WIRS Accredited Design Approval Request (100kb)
- Point of connection enquiry form (89kb)
- Notification of commencement of mainlaying form (48kb)
- Wessex Water whereabouts (39kb)
- Service connection self-certification (66kb)
- Chlorination certificate (71kb)
- Request for Wessex Water to make mains connection (44kb)
- Notification of routine in-line mains connection (61kb)
- Notification of proposed service connection (44kb)
- Notification of completed or aborted work (64kb)
- Meter details form (57kb)
- Contestability Application (162kb)
Guidance notes
- Code of Practice for the Self-Laying of Water Mains and Services (1.11mb)
- Materials list (21kb)
- Disinfection of water supply mains, fittings and standpipes (96kb)
- Sluice valve chamber (329kb)
- Washout chambers (510kb)
- Fire hydrant chambers (510kb)
- Network meter chambers (123kb)
- Stop valve and meter (82kb)
- Policy for the supply of water to fire-fighting systems (895kb)