What is the ruling on performing wudu' with water to which a substance has been added that changed its color?

The questioner : Honorable Shaykh, in the water we use for wudu' on the roof, they put in a substance that changes the water and makes its color like milk. What is the ruling on performing wudu' from it?

The Shaykh : If you intended. In what?

The questioner : For wudu'.

The Shaykh : In any case, this has benefited us by informing us that there is water on the roof that people use for wudu'. But I do not know where it is located?

The questioner : Not permitted.

The Shaykh : Well, I saw this in the new bathrooms that are behind. This new bathroom that is behind the mihrab. And I performed wudu' from it. I performed wudu' from it, and at first when it is poured, it is like milk, but it is milk mixed with water, not pure milk. However, this substance does not last three or four seconds before it disappears; it does not persist. So it does not affect the purity of the water. The water is purifying and purifies, and this substance does not harm it in any way. Yes.