Onsen OniOnsen Oni

Uji Natural Hot Spring Genji-no-Yu

宇治天然温泉 源氏の湯うじてんねんおんせん みなもとしのゆ

Bathing Complex
Kansai·Kyoto
0774-41-2615genji-yu.jp

Day Use

Yes

Bathing & Water

OnsenYes

Uses natural hot spring water

Water treatment

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

宇治天然温泉 源氏の湯

Uji Natural Hot Spring Genji-no-Yu
塩
Chloride
Classification

Sodium-Calcium Chloride spring

A sodium-calcium chloride spring at isotonic strength — salty, heat-retaining, and richly mineralized at roughly 8.8 g/kg of dissolved solids that leaves a mineral film on the skin. The wellhead is a cool 27.5 °C, so the water is heated and served at around 42 °C with recirculation and chlorine disinfection.

Source temperature
27.5°C
Low temp.
Tonicity
8.80g/kg
Isotonic
Flow rate
1,111L/min
Very high
Free CO₂
3.10mg/kg
Low

Analyzed Dec 6, 2022·日本水処理工業株式会社·Cert no. 大阪府第5号

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SM
Sergey M
1 year ago

304. Uji Natural Hot Spring Genji-no-Yu Super sento with onsen water, 800-1100 yen. Listed hours are 10:00 to 24:00 (Mon-Fri) and 06:00 to 24:00 (Sat-Sun). They give a stamp for the 41 Super Sento of Kansai 24/25. Has a restaurant, massage, chill-out zone, and massage chairs. Photo of the outdoor zone from the internet — matches roughly; based on the orientation it seems to be the women's side, and the water color was more of a rusty shade (closer to the overexposed photo with water). 1. Outdoor zone, no view. 1.1. Main outdoor bath, rich rusty-colored water with a smell, temperature 41. TV mounted. 1.2. Two barrels with water the same color as the main bath. 1.3. Sauna. 1.4. Cold bath. 2. Indoor zone. 2.1. Event bath with a bag of herbs, water temperature 41. 2.2. Bath with bubbles, clear water, temperature 40. 2.3. Carbonated bath with clear water, temperature 38. 2.4. Sauna. 2.5. Cold bath. Interesting water in Uji, Kyoto. The outdoor bath is good — even though there's a TV, with the crowd at the time of my visit it somehow added to the atmosphere and felt pleasant; I didn't want to leave. A good place, recommended for a visit.