Milky water is usually caused by air getting into the system. Tiny air bubbles can form in the water as it’s drawn from the tap giving it the milky or cloudy appearance you are seeing. Water with air bubbles is perfectly safe to drink.
Here’s a glass test you can do to see if the milky appearance is due to air bubbles -
Air can get into water pipes in various ways – sometimes it can happen when we’ve been working on the water mains in the street. The appearance of air in water can also be caused by internal plumbing, the most common cause is when cold water pipes sit too close to hot water or central heating pipes. Warm water holds less dissolved air than cold water so when the cold water is warmed in the pipe air bubbles will form which results in the water appearing milky. This milky appearance should clear if you flush the tap until the water runs cold and you can prevent it from happening by insulating the pipes to stop the cold water warming up.
If your water doesn’t clear in the glass test above and the milky water is persistent, affecting all your taps and not affecting neighbours, then please contact us for further advice on 0800 052 0130
Please have a look at this factsheet to find out more information:
Hi, I'm Rita
We're finding an answer to your question
We’re really sorry but we cannot deal with your request at the moment. Please check back and try again in a few minutes. We’re sorry for any inconvenience this may have caused.
There are several questions that might be relevant to you, these are:
No matches for that question I'm afraid. Please try rephrasing or adding more detail.
Alternatively, pick from some of our most popular FAQ's
Was this answer helpful?
Dŵr Cymru Cyf, a limited company registered in Wales No. 2366777.
Registered office: Pentwyn Road, Nelson, Treharris, Mid Glamorgan CF46 6LY.
© Dŵr Cymru Cyf 2017.