Purity: Purification of Mixed Water by Mixing with Kurr or Flowing Water

Practical Laws of Islam as per the teachings of Ayatullah Sistani

Ruling 46

If impure mixed water is mixed with kurr water or flowing water in a way that it can no longer be commonly called ‘mixed water’, it becomes pure.

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