Tosenji Onsen Public Bath Izumiyu

湯泉地温泉 公衆浴場 泉湯ゆいずみちおんせん こうしゅうよくじょう いずみゆ

Public Bathhouse
Kansai·Nara

Day Use

Yes
Mon10:00–20:00
TueClosed
Wed10:00–20:00
Thu10:00–20:00
Fri10:00–20:00
Sat10:00–20:00
Sun10:00–20:00

except Tuesdays

¥600

Bathing & Water

Outdoor BathYes

Open-air outdoor bath

Indoor BathYes

Enclosed indoor bathing area

OnsenYes

Uses natural hot spring water

Policies & Services

WashingYes

Shower, wash stations, soap and shampoo provided

湯泉地温泉1号・2号混合源泉

Tosenji Onsen #1 and #2 Mixed Source

Operated by · 十津川村

Mixed source

Sulfur
Classification

Sodium Bicarbonate-Carbonate spring

A naturally sulfur-bearing simple thermal source, blending the village's #1 and #2 wells in Totsukawa. Alkaline (pH 8.9) and hypotonic, with a soft, slippery feel and a recognizable faint sulfur note at the wellhead. Lightly mineralized — total dissolved solids just 236 mg/kg — yet free sulfide species (HS) reach about 5 mg/kg, enough to qualify as a true sulfur spring under the Japanese classification.

pH
8.90
Alkaline
Source temperature
52.7°C
Hot
Tonicity
0.24g/kg
Hypotonic
Flow rate
6,340L/min
Very high
Free CO₂
0.20mg/kg
Low
Color
colorless and transparent
Odor
with a faint sulfur note
Highlights
  • Sulfur-rich

Analyzed Mar 14, 2014·有限会社奈良環境調和研究所·Cert no. 蘆-1403047

Views

Forest
River

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1 review

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Sergey M
1 year ago

613. Izumiyu, Tosenji Onsen, Totsukawa, Nara ★ Onsen for 600. Operating hours stated as 10:00 to 20:00 (closed Tuesdays). They stamp the 88 Onsen of Wakayama booklet. Outdoor stone bath. View of the river and forest, but the fence is quite bulky and obstructs the view from inside the bath. Clear water, slight smell. Temperature was 46 one day and 42 the other. Indoor bath. Clear water, slight smell. Temperature was 41 one day and 44 the other. Breathable inside. A solid onsen. If the rotenburo fence were smaller or absent, it would be really cool, but it's still worth a stop when visiting Tosenji Onsen. Not sure what's up with the temperature swinging so much between days. 14.06.2025 15.06.2025