Yes! The manufacturer claims that this product is lactose free.

Is Perrier Natural Sparkling Watermelon Flavored Mineral Water, 16.9 Fl. Oz. Lactose Free?

Yes! The manufacturer claims that this product is lactose free.
Lactose Free? Perrier Natural Sparkling Watermelon Flavored Mineral Water, 16.9 Fl. Oz. | Spoonful