Sukkama Minamoto Shi No Yu

スッカマ 源氏の湯スッカマ みなもとしのゆ

Bathing Complex
Kansai·Kyoto

Day Use

Yes

Bathing & Water

OnsenYes

Uses natural hot spring water

けいはんな学研天然温泉

Keihanna Gakken Natural Hot Spring

Operated by · 株式会社弘商会

Sampled at wellhead
Simple
Classification

Sodium Bicarbonate spring

A simple thermal source ('Keihanna Gakken Tennen Onsen') with light overall mineralization — 0.83 g/kg dissolved solids — yet weakly alkaline and soft on the skin, sitting squarely in the Japanese 'beauty-water' family. Generous metasilicic acid (86.6 mg/kg) leaves a thin silica film that smooths the skin, and an unusually high radon content of 90.9 Bq/kg places it in the 'hormesis' radon tradition — a rare pairing in a single-named simple spring.

pH
8.10
Weakly alkaline
Source temperature
32.8°C
Low temp.
Tonicity
0.83g/kg
Hypotonic
Flow rate
704L/min
High
Free CO₂
4.80mg/kg
Low
Radon
91Bq/kg
Typical
Color
Colorless and clear
Taste
Nearly tasteless
Odor
Odorless
Highlights
  • High silica
  • High radon

Analyzed Aug 18, 2020·公益財団法人 中央温泉研究所·Cert no. 甲第3768号

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SM
Sergey M
1 year ago

333. Sukkama Genji-no-yu, Kyoto Super sento with natural hot spring water for 1000-1100, an hour from Kyoto station. Operating hours listed as 08:00-24:00 (Mon-Fri) and 06:00-24:00 (Sat-Sun). They stamp the 41 Kansai Super Sento stamp rally 24/25. Very welcoming reception, pleasant atmosphere inside. Has a restaurant, gift shop, chill zones (including one with vinyl records), massage chairs, manga, and massage. Various stone baths. Bath photos from the internet, partially match — the bath with the staircase looks to be from the women's onsen by its orientation, but very similar. 1. Outdoor area. No view, but there's some bamboo and trees inside that add coziness (especially in the evening). 1.1. Large rotenburo with clear slightly cloudy water and a reclining zone, water temperature around 42. 1.2. Rectangular bath with double depth: 60 and 120 cm. Where it's 60 cm — clear water; where 120 cm — clear and slightly blue. Temperature around 38. 1.3. Cold bath. 1.4. Sauna. 2. Indoor area. Breathing is fine. 2.1. Bath with bright green clear water, temperature around 40. 2.2. Carbonated bath, clear water, temperature around 36. 2.3. Sauna. Solid place, worth considering for trips near Kyoto.