






500ml (30 bottles) x 1 box
Payment Methods
Credit cards: VISA / MasterCard
(Available for both single purchases and subscriptions)
*Payment may not be completed depending on the type of card, issuing country, and security settings of the card company.
In that case, please contact us via the inquiry form.
We will guide you through other payment methods, such as bank transfer.
Free shipping (separate shipping charges are required for remote islands) Current orders will be delivered after February 15th.
ONSENSUI99 Official Subscription Program
- Up to 40% OFF
- 1 box (30 pieces): up to 1,440 THB
- 1 bottle: 48 THB
Discount Steps:
- First time: 10% OFF (2,160 THB)
- 2nd time: 20% OFF (1,920 THB)
- 3rd time: 30% OFF (1,680 THB)
- 4th order onwards: 40% OFF (1,440 THB)
About expiry date
2 years from the date of manufacture if unopened After opening, please keep refrigerated and drink within 2-3 days.
For those paying by card on overseas sites
When using a Japanese credit card on an overseas e-commerce site (online shopping), the card company's fraud detection system often kicks in, automatically blocking (rejecting) the payment.
To ensure your purchase goes through smoothly, we strongly recommend making a "prior notification" by following the steps below.
1. Notify your card company of your "planned usage."This is the most reliable measure. By informing the cardholder that you will be using the card overseas, they can temporarily configure the security settings to prevent it from being locked.
Contact: The phone number listed on the back of your card, or the cardholder-exclusive website/app.
Information to provide:
"I plan to make a purchase on an overseas website."
"Planned date (or period) of use."
"Approximate payment amount."
2. Why is prior notification necessary?Card companies monitor suspicious activity 24/7. If a card that has never been used overseas suddenly makes a payment on an international site, the system will assume that "card information has been stolen and misused" and will stop the payment to protect your assets.
3. What to do if payment is rejected without prior notification.If you encounter a payment error, do not repeatedly retry. Contact your card company immediately. Once your identity is confirmed, they can lift the restriction right away.
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natural alkaline hot spring water
"Hot spring water" is natural water that gushes out from Tarumizu Onsen in Kagoshima Prefecture. The natural water that springs from a source 750 meters underground in the Sakurajima volcanic zone undergoes strict sanitary tests every day, and has a pH of 9.9 and a hardness of less than 2, making it the highest quality water in the world. It is a rare natural water with a limited amount, so it is truly a ``phantom water.''

Safety of hot spring water
Water is extracted and manufactured directly from the source in our own clean factory that has received an award for excellent food hygiene facilities (*).
In addition, periodic radioactivity tests conducted by an external inspection agency have resulted in non-detection of both radioactive iodine (iodine 131) and radioactive cesium (cesium 134 and cesium 137).
*Awarded by the Kagoshima Prefecture Food Hygiene Association
SOC Co., Ltd. delivers safe, high-quality products to our customers
99 secrets of Onsensui99
Ultra-soft natural spring water sourced from the hot springs of Tarumizu, Kagoshima. Experience a uniquely mellow, smooth, and gentle taste in every drop
Company Profile
SOC Co., Ltd., the manufacturer and distributor of Onsensui 99, is dedicated to delivering safe and high-quality product
See detailsAuthorized distributor
Official Distributors Wanted. If you are interested in becoming a partner and retailing Onsensui 99, please contact us for more information