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Home Resident Environmental problems Drinking Water Quality

Drinking Water Quality

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We test both Public and Private water supplies. Here you will find advice on water contamination, the organisations responsible for its clean-up and enforcement, and contact details to report an incident.
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Mains Water Supply Testing

If you are concerned about the quality of your drinking water you should contact Dŵr Cymru / Welsh Water in the first instance. 

Dŵr Cymru can be contacted on: 0800 052 0130.

Contact us if you would like to discuss water quality more generally we can advise you further.

Testing for Lead in Mains Water Supplies in Domestic Properties

It is possible for lead pipe work to remain in older properties.  In general, the householder (consumer) is responsible for the condition of the pipe work on the consumer's side of the stop tap. Dŵr Cymru / Welsh Water's stop tap is normally situated at the property boundary or within the highway pavement.

Although many house refurbishment works may have already removed internal lead pipe-work within the house, it is possible for sections of pipe-work, for example, running under driveways and paths to remain. This can be sufficient for the water to absorb enough lead to cause a failure of the water quality standard at the consumer's tap.

What to do if you suspect your property has lead pipe work

If you suspect or have concerns that your property has lead pipe work, please contact us to arrange for a water quality test to be carried out at the kitchen tap.

Are there grants available for the removal of lead pipe work?

Although grants are no longer available it is advisable to check with Dŵr Cymru / Welsh Water to find out if they are doing any mains refurbish works in the area because this would be the most cost effective time to replace any pipe work near to the stop tap.

Private Water Supplies

A private water supply is one which is not provided by a water company. There are more than 600 properties served by a private water supply within Conwy County Borough. Private water supplies include sources of water from springs, wells, boreholes and streams, but can include sources of water used for domestic or commercial purposes that does not come from the Public water mains network supplied in Conwy by Dŵr Cymru / Welsh Water.

We have statutory responsibility to monitor the quality of water consumed from private domestic water supplies that serve more than a single dwelling.

If you have a private water supply and want to have the water tested, please fill in our online contact form.

Water Supplies at Commercial Premises

If your enquiry is relating to commercial premises or a holiday let, this is enforced by the Environment Team who can be contacted by email to

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