Budou no Oka Natural Onsen Tenkū-no-yu

天空の湯てんくうのゆ

Other

Chubu·Yamanashi

0553-44-2111 budounooka.com

Day Use

Yes

Bathing & Water

OnsenYes

Uses natural hot spring water

甲州市勝沼ぶどうの丘温泉

Koshu Katsunuma Budou-no-oka Onsen

Operated by · 甲州市勝沼ぶどうの丘

Sampled at wellhead

黄

Sulfur

Classification

Sodium Bicarbonate spring

A strongly alkaline simple sulfur spring. The high pH gives a pronounced slippery feel on the skin, placing it in Japan's beauty-water family, while a faint sulfur note and fine bubbles cling at the source. With only 216.6 mg/kg of dissolved solids it is lightly mineralized and gentle on the body.

pH

9.80

Alkaline

Source temperature

40.1°C

Warm

Tonicity

0.22g/kg

Hypotonic

Flow rate

124.2L/min

Typical

Color: colorless and transparent, with fine bubbles
Odor: faint sulfur note

Highlights

Strongly alkaline

Analyzed Feb 15, 2018·一般社団法人山梨県食品衛生協会·Cert no. 梨食第29-9号

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1 year ago

557. Budou no Oka Natural Onsen Tenkū-no-yu, Koshu, Yamanashi Onsen near vineyards for 760. Operating hours are listed as 08:00 to 22:00. They stamp the Yamanashi 100 Onsen book, but the stamp is badly worn. Bath photos are from the internet, match the real thing. 1. Outdoor bath with a view of the city and mountains. Good view standing, but sitting in the bath it's lost, and fence bars start to obstruct it. Clear water, temperature around 40-41. 2. Indoor area. View through glass of the city and mountains when standing; sitting, the view disappears due to fogging on the lower part of the windows. Breathing inside is fine. 2.1. Bath with clear water, temperature around 40. 2.2. Bubble bath with three jet loungers. Clear water, temperature around 40. 13.05.2025