2.12 Potable water Flashcards

(4 cards)

1
Q

Potable water

A

It is suitable for drinking so it must have:
Low levels of microbes
Low levels of contaminating substances
It is safe but not the same as pure water

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2
Q

Making waste and ground water potable

A

There are three stages that need to take place for waste water to be potable:
Sedimentation: large insoluble particles will sink to the bottom of the water
Filtration: Water is filtered through beds of sand which removes small insoluble particles
Chlorination: Chlorine gas is put through water to kill microbes

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3
Q

Making sea water potable using distillation

A

You filter the seawater and then boil it, meaning that water vapour would cool and condense before being collected in a tube.

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4
Q

Water in analysis

A

It must be pure because any salts could react with the substances you are analysing, which could end up in a false result.

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