Building and Developing

Developer Services Charges


Welcome to Hafren Dyfrdwy Developer Services, on this page you’ll be able to find out more information about the developer charges that could impact you.

On 1 July 2018 we integrated Dee Valley Water into the Severn Trent family and created our new Welsh business known as Hafren Dyfrdwy. This means that Severn Trent will solely service our customers in England, including Dee Valley’s Chester customers, and Hafren Dyfrdwy will service our customers in Wales, including Severn Trent’s Powys and Monmouthshire customers.

So what does this mean for me?

We’ll have two separate charging booklets within Hafren Dyfrdwy. One that will be relevant for the previous area known as Severn Trent’s Powys and Monmouthshire and another for Dee Valley’s area in North East Wales, as we’ve kept the existing charging policies within those areas.  

Area Charges Booklet
Wrexham and surrounding areas formally part of Dee Valley Water Charging booklet North & North East Wales
Powys & Parts of Monmouthshire formally part of Severn Trent Charging booklet Powys & Parts of Monmouthshire

If you’re not sure which charging booklet applies to you, please take a look at the interactive map at the bottom of this page.

If your site is located in the ‘pink area’ the North East Wales booklet will apply.

If your site is located in the ‘blue or purple area’ the Powys and Monmouthshire booklet will apply.

What about my development in Chester?

Chester has now become part of our English company (Severn Trent), you’ll be able to find all the information you need, including how to contact them here.

Will Hafren Dyfrdwy adopt sewer assets?

Our new Welsh business is both a water and sewer undertaker and will now adopt sewer assets that are constructed in Powys and parts of Monmouthshire, these we’re previously adopted by Severn Trent.

Sewer assests constructed in North East Wales will continue to be adopted by United Utilities or Welsh Water, depending on where your development is located.

The interactive map below will be able to help you identify what we provide in your area.  


Our aim is to make it clear and easy for our developer customers to work with us. We’ll therefore continue to look at ways in aligning and simplifying our charges in the future.   

Phone (expands content) (collapses content)

Emergencies (24hrs)

0800 085 8033

Billing Enquiries

0330 678 0679

Business Customers

0330 678 0646

Email (expands content) (collapses content)

Feel free to email us with any enquiries

Contact us
Languages (expands content) (collapses content)

Get help in your preferred language

Other languages