Blue Lagoon
- Location
- Grindavík, Iceland
- Water type
- sodium chloride, silica, bicarbonate, sulfurous
- Temperature
- 38 °C
- pH
- 7.5
Water profile
Soothing — neither hot nor cold, perfect balance.
Rich in active gases or metals — a strong mineral character.
Dense, salty water — you float without effort.
Iceland's Blue Lagoon, on the Reykjanes Peninsula, was never part of the original plan: it emerged in 1976 as a byproduct of the Svartsengi Power Plant, built to generate electricity and hot water for nearby communities. Mineral-rich water discharged into the adjacent lava field filled the porous rock and pooled on the surface, forming the lagoon by accident.
In the early 1980s, local residents began bathing in the warm blue pool that had formed in the plant's shadow, drawn to the soothing feel of the water on skin. Analysis later revealed high concentrations of silica and minerals, responsible for its iconic milky-blue color. Blue Lagoon Ltd was founded in 1992, turning an industrial byproduct into a globally known destination.