Well from history, We stared boiling water since the 18 some, maybe 1885 or older.
According to Sanskrit writings found in a textbook written by the American Water Works Association, humans have been trying to purify their water since approximately 2000 B.C. The Sanskrit writing found states that humans at that time felt that water should be purified by boiling over a fire, heated in the sun, or a heated iron should be dipped into the unpure water. They also noted that purification could be attained by filtration methods as well, such as running the water through sand and gravel in order to catch and remove any impurities.
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