Ultra-soft Water
Easy Drinkability
the Alkaline Natural Hot Spring
the Ultra-Soft Water
Alkaline Water
within the range of 9.5 to 9.9 as per specifications.
Ultra-Soft Water
Reliability and Quality
History
No.1 Water
100% Natural Safe Drinking Water
by Natural Filtration
Underground Water
Temperature
ONSENSUI 99
Product Lineup
500ml
2L
11.5L
ONSENSUI 99 is enjoyed in various situations.
What is ONSENSUI99?
Why is ONSENSUI 99 popular in Japan?
ONSENSUI 99 is a natural hot spring water sourced from underground volcanic regions, known for its high quality and health benefits.
What is the special about ONSENSUI99?
The characteristics of ONSENSUI 99 include its alkaline pH 9.9 and its low hardness level of 1.7mg/l.
Where is ONSENSUI99 manufactured?
ONSENSUI99 is only manufactured by SOC Corporation in Kagoshima, Japan
What is the sales country of Onsen Water 99?
ONSENSUI99 is currently available in China, Cambodia, Japan, Singapore, USA, and others.
What is the health benefits of ONSENSUI99?
The health benefits of ONSENSUI 99 include its alkaline pH, which may help neutralize acidity in the body, and its rich natural mineral content, which is believed to support overall health and well-being. Additionally, its purity and low hardness level make it suitable for hydration and potentially beneficial for skin health.
Volcanic Origin
ONSENSUI 99
ONSENSUI 99 is a premium natural spring water sourced from the pristine depths beneath Japan’s iconic Sakurajima volcano. Enriched by the mineral-rich volcanic ash that has settled over centuries, it emerges as a refreshing elixir from the Shirasu plateau, a testament to the volcanic legacy of the region. Its unparalleled purity and crisp taste make it the quintessential choice for those seeking the invigorating benefits of volcanic hot spring water.
the Active Volcano
Sakurajima is an active volcano located in Kagoshima Bay, Japan. It’s often referred to as one of Japan’s most iconic landmarks due to its frequent volcanic activity and its stunning backdrop against the bay and the city of Kagoshima. Sakurajima is known for its ash eruptions and the mesmerizing sight of volcanic smoke rising from its crater. Visitors can experience the volcano up close by taking ferry rides to the island, where they can explore its rugged terrain, hot springs, and volcanic landscapes. It’s a unique destination offering a blend of natural beauty and geological wonder, attracting tourists and geology enthusiasts from around the world.
the Volcanic Ash
Sakurajima’s volcanic ash is primarily ejected into the atmosphere due to volcanic activity. This ash is extremely fine and lightweight, often carried by the wind. During volcanic eruptions, Sakurajima’s ash is frequently emitted in large quantities, spreading to surrounding areas. This can potentially impact transportation, daily life, agriculture, and the environment. Additionally, volcanic ash can affect soil and water quality, making it a significant factor in the region’s ecosystems and agriculture.
the Volcanic ash plateau
The Shirasu plateau in Kagoshima Prefecture is a terrain formed by volcanic activity, consisting of volcanic ash and deposits. Its characteristic features include vast and flat expanses with layers of dark volcanic ash stacked upon one another. This region is generally fertile and known for its suitability for agriculture. Additionally, its excellent drainage and low humidity make it ideal for cultivating grains and vegetables. Particularly, groundwater, which emerges from deep underground, is utilized as potable water after undergoing natural purification processes.
the Hot Springs
The hot springs in Tarumizu City, Kagoshima Prefecture, are characterized by their water quality. Springing from 750 meters underground, the hot spring water exhibits an alkaline pH ranging from 9.5 to 9.9 and has a very low hardness of 1.7 mg/L. This makes it known for being gentle on the skin. Additionally, ONSENSUI 99 is notable for its pleasant taste even at room temperature, making it suitable for drinking purposes as well.
Nutrition Facts
| Energy | 0kcal | Sodium (salt equivalent) | 5.00mg 0.01g) |
| Protein | 0g | Calcium | 0.05mg |
| Fat | 0g | Magnesium | 0.01mg |
| Carbohydrates | 0g | Potassium | 0.08mg |
| Water Source | Company-owned Wells in Tarumizu City, Kagoshima, Japan |
| pH | 9.5 to 9.9 |
| Water Hardness* | 1.7 ng/L |
Our Commitment to Transparency and Safety
Official Third-Party Test Reports
| Mineral Water Composition Standard Test | PASS |
| Radiation Inspection Report | Undetected |
| Organic fluorinated compounds Test Report (PFOS, PFOA) | Undetected |
| Pesticide Residue Analysis Test Report | Not Detected |
Free from Nitrate Nitrogen
Nitrate nitrogen refers to the nitrogen present in the form of nitrate ions (NO3-) in water or soil. Nitrate nitrogen is an important indicator of water quality and soil fertility. It can come from various sources such as agricultural runoff, wastewater, and natural processes like atmospheric deposition. High levels of nitrate nitrogen in water can pose health risks, particularly to infants, and can also contribute to environmental pollution and eutrophication.
ONSENSUI 99 contains 0mg/L nitrate nitrogen*.
*Internal Testing
100% Natural Alkaline Water
“Natural water” refers to water sourced from specific underground water sources and undergoes no physical or chemical treatment other than settling, filtration, and pasteurization.
