ONSEN WATER 99
Born from Volcano. Filtered by the Earth. Shaped by Time.
Ultra-soft alkaline water from Kagoshima, Japan
pH 9.5–9.9 / Hardness 1.7
What is ONSEN WATER 99
ONSEN WATER 99 is a natural alkaline water born in Kagoshima, Japan —
a region shaped by volcanic activity over thousands of years.
Rainwater slowly travels deep underground, filtered naturally through multiple layers of volcanic rock.
Over time, this process softens the water, refines its mineral balance, and gently increases its alkalinity —
without artificial processing.
The result is water defined by nature, and proven by science.
The Water Profile of ONSEN WATER 99
A scientifically rare balance, shaped by volcanic geology and time.
pH 9.5–9.9
Natural Alkalinity
Hardness 1.7
Ultra-Soft Water
Resulting Quality
A natural water character shaped by volcanic geology and time.
Ultra-soft mouthfeel
Smooth and gentle on the palate
Naturally balanced alkaline water
Easy to drink, even in large amounts
For Everyday Living
• Daily hydration
• Coffee and tea
• Cooking and food preparation
• Family-friendly daily water
For Professional Use
• Cafés and restaurants
• Hotels and hospitality
• Wellness and spa facilities
• Offices and professional environments
Business & Partnership
ONSEN WATER 99 is developed for long-term global partnerships.
We work with distributors, importers, and businesses
who value quality, transparency, and sustainability.