People who consume alcohol drinking from one's utensils

I have asked this question before but I was still in some doubt. I live in a country where people openly drink and if my friends and all use my glasses and spoon after drinking should I consider them impure. I'm getting paranoid over this issue. Also if after drinking they have eaten or had drunk water and then they use my utensils will they still be impure. When we wash impure utensils in sink we usually don't see any impurity but it's just water that splashes from washing. Should we Consider that water impure. A dry particle from private part discharge fell on carpet. The carpet was dusted where that particle probably fell on floor The floor was then mopped. Should I consider the floor clean or is it impure as it was mopped. Due to this I cannot pray.