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The first step in treating water from a river or lake is usually


a.
chlorination.
b.
coagulation.
c.
concentration.
d.
filtration.

Respuesta :

bigdaddyjunior1
I believe filtration is the first step in treating lake water.


Hope this helps!!

step on is filtration

step two is coagulation

step three is settling basins

step four is filtration again

step five is chlorination

step six is aeration

and lastly step seven is softened

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