Consumer Concerns
Blue Water and Copper Pipes
What is it?
Blue water is occasionally observed in new houses with copper pipes, or after new copper pipes have been installed in older properties. The appearance of a blue colour in the drinking water can be disturbing and it usually appears when new copper pipes are “settling in”.
Blue water usually disappears if the tap is left running for a short period. If it does not, or if it continues to reappear each time the tap is opened, consumers should contact their water company for advice. The company can arrange for samples to be taken and this will identify whether any immediate action needs to be taken to improve water quality.
How to prevent blue water
Blue water is usually caused by soldered fittings, particularly if excess flux is used, or if the wrong type of flux has been used. Solder used in drinking water installations must be lead free, and further information on lead-free solder is given on our website. Blue water is less likely to occur if::
- minimum flux is used
- the new pipework is flushed very thoroughly
- the installation is drained down if it will not be used immediately
Use of Approved Contractors
A number of organisations offer Approved Contractor schemes under the Water Supply (Water Fittings) Regulations 1999. Many water companies participate in the Water Industry Approved Plumber Scheme, which is operated by the Water Regulations Advisory Scheme (WRAS). Water companies have a statutory duty to enforce the Regulations, and WRAS can provide advice on the Regulations. In addition the Institute of Plumbing has information about approved contractors on its website www.plumbers.org.uk
