Kofu Yumura Onsen Yumura Hotel B&B

Day Use

Yes

Mon06:00–10:00, 11:00–21:00

Tue06:00–09:00, 15:00–21:00

Wed06:00–10:00, 11:00–21:00

Thu06:00–10:00, 11:00–21:00

Fri06:00–10:00, 11:00–21:00

Sat06:00–10:00, 11:00–21:00

Sun06:00–10:00, 11:00–21:00

06:00-09:00 and 15:00-21:00 (Tuesday)

¥1,300

Bathing & Water

Natural onsen water

Uses natural hot spring water

Outdoor BathYes

Open-air outdoor bath

Indoor BathYes

Enclosed indoor bathing area

Policies & Services

WashingYes

Shower, wash stations, soap and shampoo provided

湯村温泉

Yumura Onsen

Operated by · 湯村ホテル

塩

Chloride

+ Sulfate

Color: milky white, turbid
Taste: slightly salty
Odor: odorless

Sodium-Calcium Chloride-Sulfate spring

pH 8.5AlkalineHot source · 46°C

Composition fingerprint1.8 g/kg dissolved · Hypotonic

Na⁺71

Ca²⁺23

Cl⁻55

SO₄²⁻40

◀ CationsAnions ▶

Sodium Na⁺: salt's cation — pairs with chloride to make the water salty.
Chloride Cl⁻: table-salt anion — coats the skin and holds heat in.

Known good for

Warmingcold sensitivity
Circulationtired legs
Aches & jointsstiff shoulders

The in-house source at Yumura Hotel in Kofu's Yumura Onsen district — a hot (45.8 °C) sodium-calcium chloride-sulfate spring. Alkaline pH 8.5 gives the slippery skin feel of Japan's beauty-water family, while chloride salinity and sulfate body add palpable weight. At the wellhead the water carries a slight milky cloudiness and a faint salty taste. Moderate mineralization at 1,781 mg/kg keeps it well-rounded — long-retained warmth paired with soft skin contact.

Sampled at wellhead·Analyzed Apr 25, 2017·株式会社山梨県環境科学検査センター·Cert no. 山環温第29-1号

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