Chitose Onsen in Kawasaki: A Local Bathhouse with Real Black Hot Spring Water

Chitose Onsen feels more like a well-designed neighborhood bathhouse than a sprawling day spa. That is the point: the adult entry fee is ¥570, and the outdoor bath uses naturally dark spring water drawn from several hundred metres underground. Add the sauna for ¥250 if you want it; there is no need to buy a long-stay package just to take a soak.

The black water is the reason to come

The facility describes its spring as an alkaline sodium-bicarbonate mineral spring, officially recognized for bathing in Kanagawa Prefecture. Its dark colour comes from organic material in the underground strata. The stone-garden-inspired outdoor bath is the clearest place to appreciate that black water.

Not every pool uses the spring. Chitose says its plain baths and showers use purified soft water; the indoor area also has a carbonated bath, a silky bath and jet baths. They are useful parts of the visit, but they are not all natural hot-spring pools.

The building has a little more character than a standard sento, too. Stained glass, a Hokusai-inspired tile mural and William Morris wallpaper bring a Taisho-era feel to the changing and waiting areas. Upstairs, the rest hall includes a small kids’ space.

Entry and sauna prices

The sauna is optional, so a quick spring visit stays inexpensive. Chitose also gives one sauna stamp per visit; five stamps earn one weekday sauna visit free. The fee page lists a children’s day on the fourth Saturday of each month, when children up to elementary-school age enter free with an adult, up to two children per adult. Check the facility’s notice board before relying on a special-day offer.

The regular child fares are ¥470 for junior-high students, ¥250 for elementary-school students and ¥130 for younger children. A separate standing rule lets each adult bring up to two young children in free; the age categories and the fourth-Saturday offer are not interchangeable, so check the fee page if your family’s total depends on a free ticket.

Getting there, and when it is open

Musashi-Shinjo on the JR Nambu Line is the simplest approach: the walk takes about seven minutes. Kawasaki City Bus and Tokyu Bus also stop at Jido Koen-mae, roughly a minute from the entrance. There are ten parking spaces.

The hours are less uniform than a quick glance at a map might suggest. Chitose opens from 2 p.m. to midnight on weekdays, and from 11 a.m. to 11 p.m. on Saturdays, Sundays and public holidays. It closes every Friday. If you are building a late-evening plan, remember that the weekday midnight close does not apply to weekends.

That makes the weekday evening useful for a short soak after work, while a weekend visit needs an earlier finish. There is no reliable last-admission time published on the service page, so do not plan to arrive just before closing.

For a longer spa session with bedrock bathing, compare Mizonokuchi Onsen Kirari. If you are deciding between the city’s main day-bath options, the Kawasaki family onsen guide lays out the age rules in one place.

Sources

- [Chitose Onsen: spring and facilities](https://chitose-onsen.com/guide/) - [Chitose Onsen: admission, sauna, hours and children’s offers](https://chitose-onsen.com/service/) - [Chitose Onsen: access](https://chitose-onsen.com/access/) - Images: [exterior](https://chitose-onsen.com/cms/wp-content/uploads/2019/09/02.-%E5%A4%96%E8%A6%B3%E5%8D%97%E8%A5%BF%E9%9D%A2%E5%85%A8%E6%99%AF-640x433.jpg) and [women’s changing room](https://chitose-onsen.com/cms/wp-content/uploads/2019/09/19.-%E5%A5%B3%E5%AD%90%E8%84%B1%E8%A1%A3%E5%AE%A4.jpg), Chitose Onsen. - [Musashi-Shinjo Station south exit image](https://commons.wikimedia.org/wiki/File:Musashi-shinjo-station_south20010902.jpg), Wikimedia Commons. Checked: 2026-09-27

Tags: Chitose Onsen, Kawasaki onsen, black hot spring, Japanese sento, Kanagawa day bath