It doesn't seem to matter in Ireland, our water seems fine.

But I went to Manchester in the UK last year, and after washing my piece in a hotel there it was a tangled mess! Even after styling and combing, it was like a rats bloody nest. Don't know what kind of water they had there... the water actually felt "slimy" in my fingers, and not so clean.

So I guess different areas have different waters. You're probably better off in the countryside.