Kiyomon-yu Hot Spring

きよもん湯きよもんゆ

Other
Kansai·Wakayama

Day Use

Yes

Bathing & Water

OnsenYes

Uses natural hot spring water

喜代門湯1号

Kiyomon-yu Spring No. 1

Operated by · 株式会社 きよもん

Sampled at wellhead
Simple
Classification

Sodium Carbonate-Chloride spring

A pH 9.6 alkaline simple thermal water from Yugawa in Wakayama. Total dissolved solids are light at 195 mg/kg, but the strong alkalinity gives a pronounced slippery feel on the skin — squarely in Japan's beauty-water family. Metasilicic acid at 55.6 mg/kg leaves a thin silica film for noticeably smoother skin. At the wellhead the water carries a very faint sulfur note on the tongue.

pH
9.60
Alkaline
Source temperature
41.3°C
Warm
Tonicity
0.20g/kg
Hypotonic
Flow rate
210L/min
Typical
Color
colorless and transparent
Taste
very faint sulfur taste
Odor
odorless
Highlights
  • High silica
  • Strongly alkaline

Analyzed Jun 12, 2019·一般社団法人 和歌山県薬剤師会 医薬品・公衆衛生検査センター·Cert no. 第E1905208号

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SM
Sergey M
4 months ago

649. Kiyomon-yu Hot Spring, Nachikatsuura, Wakayama Onsen for 500 yen. For an additional 1000 yen there are private baths (didn't take one). Operating hours from 12:00 to 23:30. They used to sell the 12 Onsen of Wakayama stamp but stopped participating. Bath photo from the internet matches. Indoor bath with clear water, temperature 40. Breathing inside is fine. 04.11.2025