♨ Temperature
35°C
⛰ Altitude
—
⚗ pH
—
💧 TDS
—
🌊 Flow rate
—
📅 Established
Geothermal water used in balneotherapy since the 1990s; PIG/AGH-2 well certified 2008; official spa-town status 2012
✓ Verified on 2026-07-31
Uniejów, on the Warta river in the Łódź Voivodeship, is the country's best-established geothermal town, having drawn on its underground thermal water for balneotherapy since the 1990s. The National Institute of Public Health certified the healing properties of water from the PIG/AGH-2 well in 2008, and in 2012 Uniejów and four surrounding villages received official spa-resort status by government decree — the first geothermally-based spa designation of its kind in Poland. The water, which supplies the Termy Uniejów complex year-round at 33°C in summer and 35°C in winter, is described in municipal and academic sources as containing sulphur, fluorine, iodine (at concentrations comparable to the Baltic Sea), copper chlorides, iron and metasilicic acid. Treatments offered focus on orthopedic, neurological, rheumatological and dermatological conditions.