To ensure water produced and distributed is of the highest quality we operate a quality system for drinking water which is registered by the British Standards Institute and meets the requirements of ISO 9002. The scope of the registration covers collection, abstraction, transfer, treatment, storage, distribution and sampling of drinking water. Where a company fails to meet the required standard the Drinking Water Inspectorate (DWI) can take “enforcement action” obliging the company to undertake remedial work or other action to address the problem.

The average age of Welsh Water’s pipes is about 50 years, although some pipes are over 100 years old. The current condition of our water pipe network can affect water quality at the tap, especially colour, as well as the level of leakage, pressure and the number of bursts.

We keep a register of the quality standards of our water supply which you may inspect. The register for South Wales is available at our Nelson Office in Pentwyn Road, Nelson and for North Wales at our Dinas Office in Llanwnda, Nr Caernarfon.

Water Health Partnership for Wales

This initiative brings together relevant agencies to agree how to work together more effectively to protect public health, including the DWI, Welsh Assembly Government, local authority public and environmental health, the Consumer Council for Wales, and the National Public Health Service Wales.

Click here to find out details about the agencies involved.

Due to technical difficulties the online Water Quality search for your area is temporarily unavailable.  If you have an enquiry regarding your area, please telephone our 24 hour helpline on 0800 052 0130 for further information.