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Sanraifu Yaizu Kuroshio Onsen

サンライフ焼津 黒潮温泉サンライフやいづ くろしおおんせん

Public Bathhouse
Chubu·Shizuoka

Day Use

Yes
MonClosed
Tue09:00–20:30
Wed09:00–20:30
Thu09:00–20:30
Fri09:00–20:30
Sat09:00–20:30
Sun09:00–20:30

except Monday

¥560

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

焼津港1号井

Yaizuko Well No. 1

Operated by · 東海ガス株式会社

塩
Chloride
Color
almost colorless and clear
Taste
strongly salty
Odor
not recorded

Sodium-Calcium Chloride spring

pH 8.6AlkalineHot source · 52°C
Composition fingerprint16.3 g/kg dissolved · Hypertonic
Na⁺53
Ca²⁺46
Cl⁻100
◀ 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
  • Aches & jointsstiff shoulders
  • Smooth skindry, rough skin

A sodium and calcium chloride spring, salty and heat-retaining. With dissolved solids at roughly 16,270 mg/kg it is richly mineralized and leaves a mineral film on the skin — a hypertonic water with a distinctly salty edge at the source. Alkaline in reaction, it is drawn at a free-flowing borehole wellhead, accompanied by natural gas (mainly methane) rising with the water.

Sampled at wellhead·Analyzed Jan 14, 2021·一般社団法人 長野県薬剤師会 検査課·Cert no. 中No.2-29号

Explore the water

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Sergey M
1 year ago· edited

275. Sun Life Yaizu Kuroshio Onsen, Yaizu Public onsen. Price: ¥560. Hours listed as 09:00 to 20:30, except Mon. They stamp the Shizuoka 60 onsen 24/25 stamp rally. Bath photos are from the internet, and they match. Indoor and outdoor baths with clear water. 12.11.2024

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Last updated October 13, 2026