Developer Quick Links

This service is for new and replacement water connections.

This service is for large diameter new water connections.

If you want to apply for a water and drainage search on a property, you can apply using this application form. One of our team will then be in touch

If you want to see whether your building or land contains any, then ask for your map here

If you’re building a new home or development, you probably want to connect to one of our sewerage pipes so that we can take away your surface water and wastewater to treat, clean and return to the environment

A shorter process where you can 'self-certify' as long as you meet certain criteria in regard to how your work will protect our sewer

A more detailed process, needed for more complicated or higher risk work, that involves a technical assessment of your proposals by our dedicated team

If you are applying for a new sewer connection and the sewer is outside of your property boundary, or it serves more than one building, then you’ll need to ask us to enter an adoption agreement with you first before building

Tell us about your proposed development

If you want to improve or develop land that you own, and the public sewerage would likely stop or hinder your development, then you have the right to request its alteration or removal

A self-lay water main is where you choose to have your new water main laid by an accredited self-lay contractor instead of us

Requisitioning involves Welsh Water designing and laying the water main

If you want to divert, alter or remove water mains or apparatus on land that you have an interest in or own, we’re your team

Do you have a private sewerage system that you’d like us to consider adopting into our network? Once it’s adopted, we will be responsible for its maintenance

Sometimes your home or site has no way of draining to a public sewer due to the land between the site and the sewer being owned by a third party. If the third party won't give you access to the land, then you can also formally request (requisition) a public sewer and/or lateral drain from us

If you’d like to locate a sewer, you can apply for one of our CCTV surveys/sewer traces

This form is for local authorities and building control companies only