Onsen OniOnsen Oni

You Puru Nirasaki

ゆ～ぷるにらさきゆ～ぷるにらさき

Other
Chubu·Yamanashi
0551-20-2222yu-pool-nirasaki.com

Day Use

Yes

Bathing & Water

OnsenYes

Uses natural hot spring water

韮崎市健康ふれあいセンター

Nirasaki City Kenko Fureai Center
Sampled at wellhead
曹
Bicarbonate
+ Chloride
Classification

Sodium Chloride spring

A sodium-led bicarbonate-chloride spring at 44.5 °C, weakly alkaline at pH 7.8 and soft on the skin. Moderately mineralized at 1,423 mg/kg total dissolved solids, the water carries a faint hydrogen sulfide note and a slightly acidic taste — a quiet, well-balanced bath rather than a chemistry showpiece.

pH
7.80
Weakly alkaline
Source temperature
44.5°C
Warm
Tonicity
1.42g/kg
Hypotonic
Free CO₂
62mg/kg
Low
Color
colorless and transparent
Taste
faintly acidic
Odor
faint hydrogen sulfide

Analyzed Apr 24, 2019·株式会社メイキョー·Cert no. M19-0125

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SM
Sergey M
1 year ago

590. You Puru Nirasaki, Yamanashi Pool complex with onsen areas for 900 yen (450 for locals). The pool is separate from the onsens (in that big round dome). Operating hours from 10:00 to 21:00 (closed Mon). They stamp the Yamanashi 100 Onsen book. Weekly bath rotation between male/female. Bath photos from the internet match reality. 1. Outdoor bath. Inner view of a fence, concrete wall, and in the center — pink flower seedlings. Clear water, temperature around 40°C. 2. Indoor area. 2.1. Bath with clear water, temperature around 40°C. 2.2. Small bath in the center. Clear water, temperature around 42°C. 2.3. Bath with bubbles. Clear water, temperature around 40°C. 2.4. Two saunas. 2.5. Cold bath. 15.05.2025