Network Access Code

The Water Act 2003 extends the opportunities for competition in water supply. All non-household customers can switch supplier.

Suppliers can supply water either by developing their own water source and using our network to transport this to their customer or by buying a wholesale supply of water from us.

As an existing water undertaker we are required to publish a Network Access Code which sets out the basis on which we will allow alternative suppliers to access our network. This code must be in accordance with detailed guidance drawn up by our regulator Ofwat.

Our Network Access Code and Access pricing can be accessed by clicking on the links below:

Network Access Code version v12 published 2020 (PDF) 

Part 6 Access Pricing version 11 published Oct 2019 (PDF)

To view the appendices for the Network Access Code click on the links below.

Appendix A – Draft Confidentiality Agreement 

Appendix B – Combined Supply: Initial Information

A standard operational code and common contract can be found within the Ofwat Guidance.

Southern Water's Compliance Code (PDF) 

Customers who may be eligible to change supplier can get more information about the new competition arrangements by contacting their Corporate Account Manager. 

Any potential licensees can find out more information from Ofwat.

Queries about Southern Water’s Access Code and indicative prices should be directed in the first instance to our Regulation team:

Competition Manager
Southern Water
Southern House
Yeoman Road
Worthing, BN13 3NX.


Tel: 01903 272351

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