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Potable water
Drinkable water
Places you can get fresh water
lakes, rivers, dams, groundwater
Where fresh water is stored
Dams + reservoirs
Stages of cleaning freshwater
Filters remove large objects
Chemicals added meaning large particles clump together and sink to the bottom
Sand filter captures remaining particles
Chlorine kills bacteria
Ways water can be purified
Distillation
Reverse osmosis
Distillation
Boiling salt and water to collect just the water and leave behind the salt
Reverse osmosis
Pushes water through semi permeable membrane using a pump
Problems with reverse osmosis and distillation
they use a lot of energy
Note 
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