The Rules of Water
Water has many different divisions, and knowing them will help us better understand the rules related to them.
Water is either Mixed or Pure.
Mixed Water: With mixed water, it is possible to make something that is dirty, clean, but it can never make something that is Najis, Tahir. (And because of this, it is not counted as a Mutahirat)
If mixed water comes into contact with a Najasat, it will become Najis – however small an amount the Najasat is, and even if the smell, colour or taste of the water has not changed.