Benefits of Onsen Sui 99 Hot Spring Water Drink

The other day, I found an interesting product I had never tried in my neighbor’s supermarket and grabbed one because I wanted to know how it tastes.

It is an onsen water drink named “Onsen Sui 99 (温泉水99: Hot Spring Water 99)” meant for beauty and health, which I will review this time.

Onsen Sui 99 Drinkable Hot Spring Water

Natural Mineral Water Onsen Sui 99

Onsen Sui 99 (500 ml) (Price: 148 yen/about 1.2 USD) is alkaline natural mineral water from Tarumizu Onsen in Kagoshima Prefecture.

The water has a high pH value ranging from 9.5 to 9.9, and its hardness is as low as 1.7 mg per liter.


Onsensui 99 Hot Spring Water Drink Benefits

Based on the description on the side of the bottle, the onsen water has the following benefits.

  • The liquid deeply infiltrates into food and brings out umami. Also, it ensures that rice comes out nice and fluffy.
  • Unlike tap water, the beverage mixes with oil and doesn’t separate because of its emulsifying action.
  • The water doesn’t rust metal as fast as tap water because of its alkalinity.

But there are no specific descriptions of how the onsen drink helps with beauty and health.


Onsen Water 99

The onsen mineral water feels soft and is very easy to drink. Because of the pure taste, I think it can become the perfect water for coffee, black tea, shochu, or whiskey.

Nutrition Facts

Nutritional Values per 100 ml
Calories 0 kcal
Protein 0 g
Fat 0 g
Carbohydrates 0 g
Sodium 5 mg
Salt Equivalents 0.01 g
Calcium 0.05 mg
Magnesium 0.01 mg
Potassium 0.08 mg

Natural Mineral Water Onsen Sui 99 Ingredients Nutrition Facts Calories Label


Hi, I'm Tomo, a Japanese blogger living in Niigata Prefecture, Japan. For the purpose of enriching your life, I would like to introduce things about Japan on this blog, especially unique Japanese products, cooking recipes, cultures, and facts and trivia.

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