The most common cause of discoloured, dark water is a disturbance in the water pipes. Repair works or burst mains can cause harmless deposits to come loose inside the pipework.

What do I do if I have discoloured water?

You can check your local area to find out if there are any works going on that could have caused the discolouration.

Discoloured water will normally clear if you run the cold tap in your kitchen. You should run this tap for up to 40 minutes or until clear.

Don′t use your water-reliant appliances, or your hot water supply, until your cold water runs clear.

Drinking water can sometimes appear ‘milky’ or ‘cloudy’ when first drawn from the tap. This is usually caused by air and disappears after a short time.

Leave your water to stand for a minute or two, or put it in the fridge, and the bubbles should clear.

Cloudy water caused by air bubbles is safe to drink and not harmful to health.

Strange colours like pink, green or blue water can be caused by a number of things.

Copper pipes

Copper turns green over time, which can make your water turn the same colour. 

Misconnections

A misconnection is pipework that is connected to the wrong part of the system.

If you have pink, green or blue water, please call us on 0345 717 1100, so we can help.