Burst water main affecting some areas of Flintshire

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Updated: 06:00 11 August 2025

We have refilled the network and restored supplies to those areas affected by the burst water main (Flint, Holywell, Ffynnongroyw, Greenfield, Llanerch y Mor, Mostyn, Oakenholt, Talacre, Whitford and Mancot).

However we are aware of temporary discolouration issues affecting water supplies to households in Connah’s Quay. This has been caused as we have needed to move the water around the network to maintain supplies and will be temporary.

We are contacting those customers on our Priority Services Register and those households (text to mobile / landlines) which may be affected.

Some households may still be experiencing discoloured water, but this is temporary. We are flushing the system and customers can also run their taps for a short period to help it clear.

Customers can collect water supplies from our bottled water station at the Jade Jones Pavilion in Flint (CH6 5ER) which remains open as a precaution.

More information is available here. We will also continue to provide updates on In Your Area and 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.