Solar water treatment

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Solar energy can be used to treat water, to make it safe for drinking, in two key ways:

• Solar water disinfection - disinfection by the heat and UV light (or sometimes just heat) of the sun.
• Solar distillation - using the energy of the sun to evaporate the water and then condense it. This is a much more energy intensive process, and requires more specialized equipment, but might be expected to give even safer water.