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Two Dutch spectacle makers invented the microscope which had a big impact on water filtration by being able to see chemicals in water.
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Sir Francis Bacon experiments and finds ways to desalinize water.
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French scientist La Hire proposed to the French Academy of Sciences that every household in Paris should have a rainwater cistern and a sand filter.
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The first citywide, municipal water treatment plant was created in Paisley, Scotland.
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Robert Thom invented slow sand filters.
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A law was passed that required that all water supplied to London be treated by slow sand filtration.
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The rapid sand filtration method was introduced in the United States. Rapid sand filtration involved pretreatments, such as coagulation and settling for reducing sediment load on the filter, and charcoal filtration for improving taste and odor.
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After the Industrial Revolution water around the world became more and more polluted, and new and more sophisticated water treatment systems were being developed to ensure that everybody would have safe and clean water to drink.
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The US Legislature passed the Clean Water Act due to a crisis in the country's water purity.
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An Arabian chemist called Gerber suggested the use of wick siphons as a way to purify water.
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A Spartan lawgiver invented a drinking cup that could make mud stick to its side.