The islands natural surface and ground-water resources can only cover about 10% of the demand at present.

UNESCO: MEDIA SERVICES

Mirra deep cleans any type of in-ground pool surface and water without using the pool's filtration system, hoses or booster pumps, which results in energy cost savings from running these pool systems less frequently.

ENGADGET: iRobot flaunts the Mirra 530 pool cleaning robot, sends the Looj 330 abroad

The water was probably once on the surface and then percolated through the ground where it became trapped at a depth of 2.4km.

BBC: Deep Canadian mine yields ancient water