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Self-lay of water mains and services



'InFlow' the online portal created by Development Services, for you, is coming soon!


InFlow will allow you to apply and pay online for all of your water applications, as well as track their progress and electronically sign agreements and accept offers, to name a few of the benefits.

Please note, once InFlow is live, we will no longer accept paper or PDF application forms.


We understand that some Developers prefer to use a Self-lay provider (SLP) to install self lay mains and/or service connections.

Please be aware that as of 1st April 2017, if you are a non household customer or applying for a temporary building supply, at the point of connection you will need to have selected a retailer.

To read more and for guidance on selecting a retailer go to

We are fully prepared to assist Developers when using SLP’s as an alternative to us constructing new mains.

Please refer to the Water UK Self-lay 'Code of Practice' here.

If you choose to go down the self-lay route, there are 3 options:

  • Self-lay mains.
  • Self-lay services only.
  • Self-lay mains and services.

The scheme is administered by Lloyds Register so that you can safely choose a SLP.

The work must be completed by a SLP which is accredited by the Water Industry Registration Scheme (WIRS).

Find out more about Anglian Water specification boundary boxes and where they can be purchased.

For more information on Self-lay, contact the water mains team on 0345 60 66 087 (Option 2, then option 2)

Apply to self-lay water mains and/or services

Self-lay notification forms

  • If you're choosing to self-lay it is important that you notify us at various stages in the process
  • You can find the notification forms here.

Need help with your application or want further information?


Call: 0345 60 66 087 and choose option 2  (8.30am to 4.30pm Monday to Thursday; 8.30am to 4.00pm Friday)


Where do I send my application and design fee to?

Lincolnshire, Nottinghamshire, Humber and North Western Cambridgeshire regions:
Anglian Water Development Services, Enterprise House, Witham Park, Lincoln LN5 7JE

Buckinghamshire, Bedfordshire, Northamptonshire and South Western Cambridgeshire regions:
Anglian Water Development Services, Cotton Valley STW, Pineham, Milton Keynes MK15 9PA

Norfolk, Suffolk, Essex and Eastern Cambridgeshire regions:
Anglian Water Development Services, Heigham WTW, Waterworks Road, Heigham, Norwich NR2 4DA



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Registered in England No. 2366656. Registered Office: Lancaster House, Lancaster Way, Ermine Business Park, Huntingdon, Cambridgeshire. PE29 6XU