Onsen OniOnsen Oni

遊 ･ Yu Fureai KōEn Sakura No Sato Onsen KōRakuen SupōTsu Kurabu

遊・湯ふれあい公園 さくらの里温泉 後楽園スポーツクラブ遊・ゆふれあいこうえん さくらのさとおんせん こうらくえんスポーツクラブ

Other
Chubu·Yamanashi
055-282-7610shisetsu-tds.jp

Day Use

Yes

Bathing & Water

OnsenYes

Uses natural hot spring water

桜花泉

Ouka-sen
Sampled at wellhead
塩
Chloride
+ Bicarbonate
Classification

Sodium Bicarbonate spring

A sodium-led chloride spring with a bicarbonate edge — sampled as 'Ouka-sen' at 37.5 °C from a powered well in Minami-Alps. Weakly alkaline (pH 7.8 at the source, 7.97 in the lab), it carries a light salty tang and a faint metallic note. Mineralization sits at a moderate 1,145 mg/kg, enough for the heat-retaining feel typical of chloride water while the bicarbonate component softens the touch.

pH
7.80
Weakly alkaline
Source temperature
37.5°C
Warm
Tonicity
1.15g/kg
Hypotonic
Free CO₂
121mg/kg
Low
Color
colorless and transparent
Taste
weakly salty
Odor
slightly metallic

Analyzed Aug 25, 2014·株式会社 山梨県環境科学検査センター·Cert no. 山環温第26-6号

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SM
Sergey M
1 year ago

592. 遊・湯ふれあい公園 さくらの里温泉 後楽園スポーツクラブ, Minami-Alps, Yamanashi Onsen for 650 yen. Operating hours from 09:30 to 21:30 (closed Fri). They stamp the Yamanashi 100 Onsen book, but the stamp is very worn out. Bath photos from the internet roughly match — visited in the evening. 1. Indoor area. Breathing inside is tolerable. 1.1. Bath with clear water, temperature around 40-41°C. 1.2. Round bath with bubbles. Clear water, temperature around 40°C. 1.3. Sauna. 1.4. Cold bath. 2. Outdoor simple rectangular bath. No view — behind a fence, but in the evening it was actually cozy. Clear water, temperature around 40°C. 15.05.2025