Hakushū Shiozawa Onsen Fossa･Maguna No Yu

白州塩沢温泉フォッサ・マグナの湯はくしゅうしおざわおんせんフォッサ・マグナのゆ

Other

Chubu·Yamanashi

0266-65-3570 itoman-w.com

Day Use

Yes

Bathing & Water

OnsenYes

Uses natural hot spring water

白州塩沢温泉

Hakushu Shiozawa Onsen

Sampled at wellhead

塩

Chloride

+ 含硫黄

Classification

Sodium-Calcium Chloride spring

A sodium-calcium chloride spring carrying sulfur, salty and heat-retaining in character. At the wellhead its pH of 10.0 makes it strongly alkaline, giving the pronounced slippery feel of Japan's beauty-water family. It carries hydrogen sulfide, so a faint rotten-egg note and a light salty tang come through at the source. A cold-mineral-leaning low-temperature spring (33 C at source), it is reheated for bathing.

pH

10.00

Alkaline

Source temperature

33.2°C

Low temp.

Tonicity

1.38g/kg

Hypotonic

Flow rate

71.1L/min

Typical

Color: colorless and transparent
Taste: slightly salty
Odor: hydrogen sulfide

Highlights

Strongly alkaline

Analyzed Nov 29, 2024·一般社団法人山梨県食品衛生協会·Cert no. 梨食第6-4号

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1 year ago

583. 白州塩沢温泉フォッサ・マグナの湯, Hokuto, Yamanashi Onsen for 830 yen (410 for locals). Operating hours from 11:00 to 21:00 (closed Wed). They stamp the Yamanashi 100 Onsen book. Bath photos from the internet match reality. 1. Indoor area. Breathing inside is fine. 1.1. Bath with clear water, temperature around 42°C. 1.2. Reclining bath. Clear water, temperature around 38°C. 1.3. Sauna. 1.4. Cold bath. 2. There's a stone rotenburo, but it was closed. 15.05.2025