Acısu Sıcak Su Kaynağı
Acisu, Usak Province, Turkey
- Location
- Acisu, Usak Province, Turkey
- Water type
- bicarbonate
- Temperature
- 38 °C
- pH
- 8
Water profile
Thermicity
Neutral
LowHigh
Soothing — neither hot nor cold, perfect balance.
Mineralisation
Restorative
LowHigh
Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Standard buoyancy
LowHigh
Soft water — natural, classic buoyancy.
BicarbonatesSodiumCalcium
Acısu Sıcak Su Kaynağı — meaning 'Bitter Water Hot Spring Source' — is a naturally warm kaplıca spring in Turkey whose name reflects the distinctively mineral, slightly bitter taste of its waters, enriched by dissolved salts and compounds drawn from deep geological formations. Mineral springs with a pronounced mineral taste like this one have long been valued in Turkish folk medicine for their powerful therapeutic effects, particularly on digestive disorders and metabolic conditions. The spring offers bathers an authentic encounter with the raw mineral richness of Anatolia's geothermal landscape.
Insider tip — The name Acisu literally means 'bitter water' in Turkish, signaling the bicarbonate-mineral character of this natural hot spring in Usak Province. Located in the Aegean hinterland where the Menderes graben system generates significant geothermal activity, the spring emerges at 38°C. The slightly effervescent, slightly acidic water is valued locally for digestive and skin complaints. The natural setting near agricultural lands has been used by local villagers for generations.
Nearby
Frequently asked questions
How hot is the water?
The water is neutral here, around 38 °C — a perfect balance, neither too hot nor too cold.
What type of water is found here?
This spot features bicarbonate water.
What is the best season to visit?
The most favourable period for this spot is: Octobre-avril.