Sparkling LMNT

These are sparkling waters. Are they kosher?

LMNT Sparkling
Ingredients:
Citrus Salt: Sparkling Water, Salt (Sodium Chloride), Citric Acid, Magnesium Malate, Potassium Chloride, Natural Lemon & Lime Flavors, Stevia Leaf Extract.

Grapefruit Salt: Sparkling Water, Salt (Sodium Chloride), Citric Acid, Magnesium Malate, Potassium Chloride, Natural Grapefruit Flavor, Stevia Leaf Extract.

Watermelon Salt: Sparkling Water, Salt (Sodium Chloride), Malic Acid, Magnesium Malate, Potassium Chloride, Natural Watermelon Flavor, Stevia Leaf Extract.

Black Cherry Lime: Sparkling Water, Salt (Sodium Chloride), Citric Acid, Malic Acid, Magnesium Malate, Potassium Chloride, Natural Black Cherry & Lime Flavors, Stevia Leaf Extract.

Kosher