Self-lay

We support mains laid by self-lay providers (SLP) and adopt independently installed mains and services once they are commissioned.

The first step with any prospective self-lay project is confirmation that the SLP / contractor has the appropriate level of competence to carry out the work.

The Water Industry Registration Scheme (WIRS) has been put in place by the water industry to effectively assess and monitor the performance of all SLPs and contractors, hence accreditation under this scheme is now the accepted method of assessment.

This scheme is operated by Lloyds Register EMEA. To see a full list of accredited SLPs and contractors, or apply for accreditation yourself, please visit the Lloyds Register website.

The relevant sections of the CDM Regulations (2015) apply to all design works carried out by or on behalf of the Water Company – both the Water Company’s representative (Approving Design Engineer) and the SLP’s representative (SLP Designer) are Designers under CDM Regulations when the design of Self-Lay Works is being generated and accepted for adoption.

 

Codes for adoption

From January 2021 Ofwat are introducing a standard practice across the water industry in England for water companies to follow when adopting self-laid mains.

More details on the new standard practice, also known as the water code for adoption can be found on Water UK’s website.

 

Design and Construction Specification

In readiness for the implementation of the new codes for adoption launching in January 2021, our Design and Construction Specification (DCS) is ready for viewing. The DCS will assist practitioners with the planning, design, construction and commissioning of a Self-Laid Main and Service Pipes to supply domestic and industrial/commercial properties.

We are looking for feedback on the Annual Contestable Summary, section 9.3 on pages 12 & 13 of the Design and Construction Specification.

Please provide your feedback by completing our form by 31 December 2020. Our local practices will be published soon, we’ll let you know when they are ready for consultation.

For more information about self-lay, please email: selflay@southernwater.co.uk.

 

Redress

We are working with Water UK and all other companies to determine appropriate and consistent redress arrangements across the sector – this will be included within the Code for Adoption. (You can read more about this on page 6, section b).

We will update our website on completion of this work. If you have any questions, please contact us at selflay@southernwater.co.uk

SLF-B0 Point of connection application

Capacity check
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S51 Self-lay water main connection

Application form
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S41 to S51 - Conversion from water main requisition to self-lay

Application form
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SLF-B3 - Application for a self lay water main

and on-site water connections S51
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SLF-F3 - Source of water

Application form
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Contaminated land

Assessment guidance
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S51 – PART 2 - Contaminated land assessment site history

Questionnaire
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Design and Construction Specification

November 2020
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SLF-F7 - Notification of commencement of water connections

For self-lay schemes
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SLF-F6 - Application for off-site self-lay water connections

Form
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SLF-F5 - Application for on-site self-lay water connections

Form
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SLF – F4 - Notification to start constructing a new water main

From
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SLF-G7 - Notification of pre-inspection

for routine mains connection
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SLF-H1 - Notification request for routine Inline Connection and subsequent vesting

of self-lay mains and services
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Proposed works

Form
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Policy documents

SL-A1 Self-lay policy – Appendix 1 Form 1

Commissioning advice form
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SL-A1 Self-lay policy – Appendix 1 Form 2

New mains commissioning handover certificate
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SL-A1 Self-lay policy - Appendix 1 Form 3

Record of work inspections
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SL-A1 - Construction: connection drawings

Appendix Four
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SL-A1 - Schedule of permissible materials

March 2019
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Self-Lay Policy Appendix Five

Example of Asset Payments The tables
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Self-Lay Policy Supplementary document

February 2018 Version 1
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Self-Lay Policy Appendix One

Commissioning and handover
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Meter Location and Installation Guide

New build domestic properties
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SL-E1 - Self-Lay Agreement For new mains and services

February 2018 Version 1
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Self-Lay Agreement For services (SL-E2)

February 2018 Version 1

SLP Trench Inspections

Self-certification
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Water UK Self-Lay Levels of Service

(SLS-A6)
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Self-Lay Pre-start Meeting Agenda

(SL-F1)
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A guide to new water mains

and services on new Self-lay development sites
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Process charts

S51 construction

Process chart
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S51 application

Process chart)
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S51 mains vesting and asset payment procedure

Process chart
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S51 point of connection application

Process chart
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S51 routine inline mains connection procedure

Process chart)
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S51 service pipe installation

Process chart
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S51 – SLP design

Process chart
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S51 – Southern Water design

Process chart
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S51 Terms acceptance

Process chart
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Self Lay Provider Application Process

including Southern Water Forms required
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