Burst water main at our Bryn Cowlyd Water Treatment Works

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Updated: 22:00 21 January 2025

We can confirm that our network has now refilled and water supplies have been restored. All affected schools are now back on supply.

To recognise the inconvenience being experienced by customers whose supplies have disrupted, each eligible household will receive £30 compensation for every 12 hours their supplies have been affected. This will automatically be paid to customers bank accounts, or their water account is their balance is more than the compensation payment. Cheques will be issued over the coming weeks to customers who do not have registered a bank account with us. Business customers will be paid £75 in compensation for every 12 hours their supplies have been affected but businesses will also be able to submit separate claims for additional loss of income.

Details have been published here for household and business customers who have been impacted by this incident.

We wish to apologise again for the inconvenience experienced by customers and wish to thank you for working with us.

Bottled water stations are now closed.

Visit Help and support after an incident to find out more.

Discoloured water from your taps is normal after a supply interruption. This is usually temporary and disappears once the network settles.

We also ask that customers check their taps to ensure that they are closed to help conserve supplies as we refill the network.

Customers can get the latest information on in your area or follow us on our social media channels.

WC Compliance


Do you know about the new alternative toilet (WC) regulations?

Anyone who is installing new plumbing needs to meet the Water Supply (Water Fittings) Regulations 1999. However, as of 1st January 2020 there is a new alternative way to meet these regulations for newly installed toilets.

There's a new agreement, called the ‘Voluntary Interim Agreement’, which introduces alternative acceptable backflow protection standards for newly installed toilet suites. It’s important to note that these do not replace the requirement for an AUK1 airgap arrangement, they just introduce an alternative way to meet the regulations. The agreement is also only in place for a 6-month period.

Whether you’re installing new toilets in England or Wales, you need to ensure any new WC installations contain compliant backflow protection to reduce any risks to public health.

As Dŵr Cymru Welsh Water, we are then responsible for enforcing these regulations when we inspect plumbing installations. We will accept toilets installed in line with the AUK1 airgap arrangements, or in line with the standards set out in the Voluntary Interim Agreement.

Full details of the Voluntary Interim Agreement can be found here

Got any questions? Send us an email using waterregulations@dwrcymru.com and we’ll answer any queries.