Boise Idaho is site of the Nation's oldest and largest geothermal district heating system and may well boast as one of the largest in the world. The first two wells were drilled in 1890 to supply hot water to a natatorium and new houses being built in East Boise. Subsequently additional wells were drilled in the 1980's by the city, the State of Idaho and the Veterans Administration to develop a geothermal district heating system within their service area. The City of Boise system heats over 5.5 million square feet of space within the heating district. Adding the State of Idaho, Veterans, and Warm Springs district heating systems make an estimated total of 7.4 million square feet heated by geothermal resources.
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