Performing Wudoo’ with leftover drinking water from animals lawful to eat?

Question 160Is it permissible to perform Wudoo’ (ablution) with drinking water left over by animals, such as cows, buffaloes, goats, sheep, and donkeys, even if this water is placed in a container?

Answer: If this foam, which is mixed with water and used in putting out fires, is made of impure substances that change the characteristics of water, it will not be permissible to use it in performing Wudoo’… read more here.