Purity: Ruling on Flowing Water’s Purity Upon Contact with Impurities

Practical Laws of Islam as per the teachings of Ayatullah Sistani

Ruling 27

In the event that an impurity makes contact with flowing water – even if it is less than kurr – then as long as the smell, colour, or taste of the water does not change by means of the impurity, it is pure.

-Ayatullah Sistani, Practical Laws of Islam, Purification (Taharah)