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Potable water: including sedimentation

Lesson 17 / 18

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I can explain what potable water is and describe how it can be obtained from groundwater and seawater.

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'Potable' and 'pure' water are not the same substance. Water used in analysis must not contain any dissolved ions. The method used to obtain potable water depends on the water source. Sedimentation, filtration and chlorination are used to obtain potable water from groundwater and fresh water sources. Desalination of seawater creates potable water by distillation or reverse osmosis.

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