> This would logically imply that the standards for bottled water are <= the standards for tap water, at least in those locations.
That’s not how logic works. That there are instances of municipal water supplies whose quality is sufficient to meet bottled water standards doesn’t tell you anything about minimum standards for either municipal supplies or bottled water.
Further: I would expect quality of municipal supplies to vary widely. A city built on the side of a mountain with access to springs can just provide that water, and it’s still from “municipal” supply.
That’s not how logic works. That there are instances of municipal water supplies whose quality is sufficient to meet bottled water standards doesn’t tell you anything about minimum standards for either municipal supplies or bottled water.
Further: I would expect quality of municipal supplies to vary widely. A city built on the side of a mountain with access to springs can just provide that water, and it’s still from “municipal” supply.