Dwr Cymru Welsh Water

COVID-19 (Coronavirus) – A Message to Our Customers - 30 March 15:00

We know that this is a difficult time. We also know that the water and wastewater services we provide play a key role in protecting public health and safeguarding the customers and communities we serve.

We are doing all we can to protect our colleagues while also maintaining our services to customers. You will still see us working in streets and communities during this time but we are only doing essential work that will help protect public health by maintaining water and wastewater services to customers.

Our Billing Call Centre is open from 9am - 5pm (Monday to Friday) to support our most vulnerable customers who have been impacted by the Coronavirus.

If you’re impacted by COVID-19 (Coronavirus) and concerned about your water bill, please click here for more information.

If you need to contact us about other things like updating your account, to let us know you are moving or to set up a direct debit, you can do this by visiting our online services.

We will keep you informed of any other changes through updates on this site and via our social media channels - Facebook & Twitter.

We apologise for this but will do everything we can to continue providing our essential services. Thank you for bearing with us.

Developer Services Sewerage Services Adoption of Proposed Sewerage

If you are building a new sewer or lateral drain, which is intended to connect to one of our public sewers, you must first enter into an adoption agreement with Welsh Water. It is essential that you enter into this adoption agreement before you begin any construction work.

Why do I need an Adoption Agreement?


The Water Industry Act sets out the legislation which regulates new sewer connections. The Act does not allow any new connections to a public sewer without an adoption agreement in place. This is to ensure that arrangements for future maintenance of the sewer are established.


A few things to remember before you make your application:


  • Sewer adoption agreements cannot be entered into once the sewers and lateral drains have been installed. An agreement must be in place before the construction of the sewer or lateral drain begins.
  • Foul sewers must comply with the mandatory standard set out in The Welsh Ministers Standards for Gravity Sewers and Lateral Drains.
  • Adoptable surface water sewers and lateral drains should comply with the standards set out within the Design Guide ‘Sewers for Adoption 7th Edition'.
  • If you do not have an adoption agreement, you will not be allowed to connect to the public sewer.

How do I apply for an Adoption Agreement?


To begin your application for a Sewer Adoption Agreement, simply complete the form below. We’ll then send you an application pack.

Please note; the submission of this form is for enquiry purposes only and is not a formal application. The information you provide will help us to determine the next steps you need to take to complete a full application.