Pleas read this bad anxity about drinking water in asia but don't want to ask and offend?

Water quality is… Something we generally take for granted in the us (sometimes mistakenly). When travelling to other lands, rely on sealed bottled water/mineral water for drinking, brushing teeth, taking meds, making ice unless staying in 5-star hotels in major cities. Better be safe than have one's trip spoiled by water-borne illness. Can also contact travel medicine docs about water. Rinse fruits & veggies too.