Mexico and the Phillipines are also major geothermal users. There are some problems with using geothermal energy. Some worry about large amounts of water taken from the ground as steam. The water can be corrosive to pipes and turbines. The water must be replaced back into the water table so that the land does not sink.
Geothermal energy can contaminate the waste water and make it more difficult for disposal.
The smelly gasses from sulfur, ammonia and boron can pollute the air. The release of steam and hot water can be as noisy as a jet plane taking off. The main advantage of geothermal energy is that is renewable. It does not affect the land the way mining does. Its waste disposal problems are minor compared to nuclear or fossil fuels.