Re: distilled water

Irish Catholic I believe but what does it matter unless you are fascinated with Pure-blood elitism. In its extreme one would cause genocide to cleanse an entire country of muggles:

from: http://harrypotter.wikia.com/wiki/Pure-blood_supremacy
Pure-blood supremacism is the belief that wizards and witches whose known ancestry is exclusively magical (pure-bloods) are inherently superior to wizards and witches who have traceable Muggle ancestry (Muggle-borns and half-bloods). Proponents of this ideology typically regard Muggle-born wizards as impure and not worthy of possessing magical ability and often actively discriminate against them.