Consumption Question

Hi all,

I have a question. I personally drink very little, once or twice a month. That being said I still live with my parents whom I think drink an unhealthy amount but unsure if this is really normal or not.

My parents are scotch drinkers. They drink scotch on the rocks with water. They go through about (3) 1.75L bottles of dewars a week, plus maybe 4 bottles of wine a week. I think this is an extreme amount of alcohol. Am I just being crazy or is this an excessive amount?

Thanks all