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You are here : At Home > My Water > How to guides > Discoloured or aerated water
If you fill a glass of water and it has a milky or cloudy appearance, this is nothing to be concerned about. This is due to lots of tiny air bubbles in the water which make it appear white.
To test if this is air, fill up a glass of water and leave it to stand. The water should clear from the bottom up.
If you notice your water is discoloured, first check with your neighbours.
We may have had a burst water main in your area which can stir up sediment from cast iron mains. If you are an Affinity Water customer, look on our website to see if there have been any incidents in your area.
If any of these problem persist or you are unsure, you can always contact us.
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