Question: Where does the blue lagoon water come from?
Disambiguated questions and answers: question: Where does the water in the Blue Lagoon in Iceland come from?|Where did Iceland's Blue Lagoon water come from?|Where does the blue lagoon water come from in Iceland?
Where does the blue lagoon estuary's water come from?
answer: Svartsengi geothermal power station
nearby geothermal power plant Svartsengi
Geothermal power plant
Svartsengi
geothermal power station
Umgeni River
Natural Questions answer: nearby geothermal power plant Svartsengi (from the Wikipedia article "Blue Lagoon (geothermal spa)")