Monno No Yu

門野の湯もんののゆ

Other
Chubu·Yamanashi

Day Use

Yes

Bathing & Water

OnsenYes

Uses natural hot spring water

Water treatment

from Article 18 disclosure
  • Added water
    Yes
  • Reheated
    Yes
  • Recirculated
    Yes
  • Disinfected
    Yes
  • Bath additives
    Not disclosed

湯口温泉

Yuguchi Onsen

Operated by · 身延町高齢者保養施設 門野の湯

Sampled at wellhead
Sulfur
Classification

Sodium-Calcium Chloride-Sulfate spring

An alkaline simple-sulfur cold-mineral spring. The source emerges at just 21 °C, so it is reheated for bathing. It carries hydrogen sulfide with the characteristic rotten-egg note and taste, and at pH 9.3 it is strongly alkaline with a slippery, soft feel on the skin. Lightly mineralized overall, it is gentle on the body. The bath is reheated, diluted, recirculated and disinfected, and the source is flagged as bathing only — not suitable for drinking.

pH
9.30
Alkaline
Source temperature
21.1°C
Cold mineral
Tonicity
0.66g/kg
Hypotonic
Flow rate
57.3L/min
Typical
Color
colorless and clear
Taste
hydrogen sulfide taste
Odor
hydrogen sulfide odor
Highlights
  • Sulfur-rich
  • Top-decile alkaline
  • Cold mineral

Analyzed Dec 12, 2017·一般社団法人 山梨県食品衛生協会·Cert no. 梨食第29-6号

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SM
Sergey M
1 year ago

514. 門野の湯, Minobu, Yamanashi Onsen for 500. Staff are sweet old ladies. Operating hours are listed as 10:00 to 18:00 (closed Mon). They stamp the Yamanashi 100 Onsen book. Two indoor baths. Breathing inside is fine. 1. Main bath with clear water, temperature around 40. 2. Bubble bath. Clear water, temperature around 42. 10.05.2025