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Before waters is treated, its quality must be assessed to ensure that the appropriate
methods are used to purify it. The particular methods that are employed will depend
on the intended use and the quality of the water source.
Metal grills or meshes are…
Seawater is the most abundant source of waterbut the high salt content makes it
unusable except where its composition is unimportant, such as condenser cooling
water in power stations.
Removing salt from sea water is expensive and is only carried out if other sources of
water are unavailable.…