The 18.9L/5 gallon water jugs are common even in Canada and US also, it's not unique to Asia. They do get washed and re-used also. It's an interesting question

The 18.9L/5 gallon water jugs are common even in Canada and US also, it's not unique to Asia. They do get washed and re-used also. It's an interesting question if they'd be at risk for microplastics as well.