Waka Kami Rō

若神楼わかかみろう

Other

Chubu·Yamanashi

0551-42-3378 wakamiro.co.jp

Day Use

Yes

Bathing & Water

OnsenYes

Uses natural hot spring water

須玉温泉若神楼

Sutama Onsen Wakamirou

Sampled at wellhead

湯

Simple

Classification

Sodium Bicarbonate-Chloride spring

Wakamiro Onsen is a simple thermal spring (hypotonic, neutral, low-temperature), led by sodium with a bicarbonate slant. The wellhead reads 27.7 C, so the water is reheated for bathing. At the source it is colorless and clear with a metallic note; left to stand it picks up a faint yellow tint. A generous 115.9 mg/kg of metasilicic acid leaves the kind of silica film that makes skin feel noticeably smoother afterwards.

pH

7.30

Neutral

Source temperature

27.7°C

Low temp.

Tonicity

0.75g/kg

Hypotonic

Flow rate

75.5L/min

Typical

Free CO₂

53mg/kg

Low

Color: colorless and clear with a metallic note
Taste: metallic
Odor: odorless

Highlights

High silica

Analyzed Oct 6, 2023·株式会社山梨県環境科学検査センター·Cert no. 山環温第2023-3号

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1 year ago

589. 若神楼, Hokuto, Yamanashi Visited for higaeri at 1000 yen. Higaeri hours from 15:00 to 21:00. They stamp the Yamanashi 100 Onsen book. They issue Toreco cards for the onsen. Bath photos from the internet roughly match — the outdoor bath was partially blocked, and online photos don't capture it well. Visited in the daytime. 1. Indoor area. Breathing inside is good. 1.1. Large bath with clear water, temperature around 40-41°C. 1.2. Small stone bath with clear water, cold water. As I understood — probably kakenagashi. 2. Outside, a strange stone outdoor bath. View is behind a fence and on surrounding trees. The rotenburo is split by a small wooden partition — the water behind the partition is cold, and technical elements and pipes are visible. In the accessible part, clear water at 37-38°C. 15.05.2025