water treatment

sedimentation

wate is stored in large tanks. this slows down water flow allowing large insoluble particles on settle at the bottom

filtration

the water is sprayed onto layers of sand and gravel meaning smaller and insoluble particles are removed

chlorination

chloride ga is pumped into water to sterilizes it

why do we treat water

because it contains harmful microorganisms and insolubles. it is done to remove harmful substances from water before giving it to the public.