市営春日居1号源泉
Municipal Kasugai Spring No. 1Operated by · 笛吹市
湯
Simple
- Color
- colorless and transparent, with a faint brownish-yellow tint
- Taste
- metallic
- Odor
- not recorded
Sodium Chloride-Sulfate-Carbonate spring
pH 9.7AlkalineHot source · 42°CStrongly alkaline
Composition fingerprint0.3 g/kg dissolved · Hypotonic
Na⁺91
Cl⁻44
SO₄²⁻23
CO₃²⁻22
◀ CationsAnions ▶
- Sodium Na⁺
- salt's cation — pairs with chloride to make the water salty.
- Chloride Cl⁻
- table-salt anion — coats the skin and holds heat in.
Known good for
- Aches & jointsstiff shoulders
- Smooth skindry, rough skin
- Recoveryfatigue, stress
Municipal Kasugai Spring No. 1 is a gentle simple thermal spring, classified hypotonic and hot, whose wellhead pH of 9.7 marks it as strongly alkaline. The strong alkalinity gives a pronounced slippery feel on the skin, placing it squarely in Japan's beauty-water family. Sodium leads the modest mineralization alongside traces of chloride and sulfate; at the source the water carries a faint brownish-yellow tint and a metallic taste, emerging hot at 42.1 °C.
Sampled at wellhead·Analyzed Feb 2, 2023·一般社団法人 山梨県食品衛生協会·Cert no. 梨食第令4-7号