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Nagareyama Onsen

Nagareyama, Chiba Prefecture, Japan
Nagareyama Onsen
Location
Nagareyama, Chiba Prefecture, Japan
Water type
sodium chloride
Temperature
41 °C
pH
7.3

Water profile

Thermicity
Sedative
41 °C
LowHigh

Relaxing — deep, immediate muscle release.

Mineralisation
Restorative
LowHigh

Loaded with major ions — the essential minerals (Ca, Mg).

Buoyancy
Effortless float
LowHigh

Dense, salty water — you float without effort.

SodiumChloruresBrome

Nagareyama Onsen is located in Nagareyama City, Chiba Prefecture, in the northern Chiba suburban zone between central Tokyo and the ancient temple town of Narita, a city whose position on the Edo River's western bank and its role as a historical transit point between Edo and the Tone River trading networks have left an unusually rich legacy of historic townscape architecture for a suburban Chiba community. The siliceous thermal waters here serve the residential population of a city that has transitioned from traditional river port town to modern Tokyo bedroom community while preserving elements of its historic character in the Nagareyama Old Town streetscape. These onsen provide accessible mineral spring bathing for the residents of northern Chiba's suburban zone, where the therapeutic siliceous waters offer urban and suburban dwellers a convenient and affordable hot spring experience within the greater metropolitan Tokyo area.

Insider tip — Nagareyama Onsen sits on the Edo River plain at the border of Chiba and greater Tokyo, where deep-drilled sodium-chloride water serves as an urban retreat for commuters. The water is coloured amber-black from dissolved organic matter, a characteristic of dark Kanto mineral springs that locals call kuro-yu. A short cycle along the Edo River embankment makes for an ideal warm-down before or after the soak.
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Frequently asked questions

How hot is the water?
The water runs quite hot here, around 41 °C — a sedative water that brings immediate muscle release.
What type of water is found here?
This spot features sodium chloride water.
What is the best season to visit?
The most favourable period for this spot is: Toute l'année (idéal automne-hiver).