Building and Developing

Water or sewer map

Requesting a water or sewer map

We have a large library of maps that cover our water mains and sewerage network.


Check that your site or property is within the Hafren Dyfrdwy area [PDF] before requesting an underground asset map.

We do not hold records of private assets within private property boundaries.


You can access the library of maps using DigDat.

You'll need to visit the DigDat website and register for an account.

You can view Digdat's user guide [PDF] to find out more about how the service works.


Once you've confirmed your site is in our area and you've registered for a DigDat account, you'll be able to search for any location you need information about.

When you search, you can buy datasets from utilities companies - including us - about the services they provide in that area.

There is a charge for each dataset you download.

Waste water and clean water information are on separate datasets. You pay for each one you need, however if you need both waste and clean water information you'll be able to buy both at the same time for a discounted price.

Get in touch

If you need any help with Digdat please contact the Digdat Support Team by email via