PLACE wafers, bottom-sides up, on baking sheet.
MICROWAVE caramels and water in microwaveable bowl on MEDIUM (50%) 1 to 1-1/2 min. or until caramels are melted, stirring every 30 sec. Let stand 5 min.
SPOON 1/2 tsp. of the caramel onto each wafer; top with nut. Drizzle with chocolate. Let stand until caramel and chocolate are firm.