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Hippocrates believed that water had to be clean and pure. Rainwater was the best water, but had to be boiled and strained before drinking to get rid of the "bad smell" and to avoid hoarseness of the voice. [3] [4] He designed a crude water filter to “purify” the water he used for his patients. Later known as the “Hippocratic sleeve ...
Early human habitations were often built next to water sources. Rivers would often serve as a crude form of natural sewage disposal. Over the millennia, technology has dramatically increased the distances across which water can be relocated. Furthermore, treatment processes to purify drinking water and to treat wastewater have been improved.
The link between water and disease was still not well established and in 1873 the president of the New York board of health declared that "although rivers are great natural sewers, and receive the drainage of towns and cities the natural process of purification, in most cases destroys the offensive bodies derived from sewer and renders them ...
If these ancient humans were putting effort into “the furniture of the site,” it suggests they may have stayed for a while or made repeat visits — not just roamed around as bands of hunter ...
Most water is purified and disinfected for human consumption (drinking water), but water purification may also be carried out for a variety of other purposes, including medical, pharmacological, chemical, and industrial applications. The history of water purification includes a wide variety of methods.
The remains — buried in layers of soil in the collapsed cave — contained the genetic material of cave bears, hyenas and 13 bones of early humans who died some 45,000 years ago.
In addition to retaining irrigation water, building thick ridge borders likely helped prevent wind and water erosion, minimize evaporation, and regulate temperature. [12] [43] Women tended to the waffle gardens hand-watering plants in the grids. They would carry water from a source, such as a well or river, in earthen jars balanced on their heads.
The chlorination of the water supply helped stop the epidemic and as a precaution, the chlorination was continued until 1911 when a new water supply was commissioned. [7] Manual Control Chlorinator for the liquefaction of chlorine for water purification, early 20th century. From Chlorination of Water by Joseph Race, 1918.