Question

write the safe level turbidity of drinking water

Answer 1

the process of filtering the water includes :
sedimentation
loading
aeration
filtration
and chlorination

Answer 2

The World Health Organisation (WHO) has set the safe turbidity level of drinking water as not more than 5 NTU (nephelometric turbidity units) and should ideally be less than 1 NTU.

Turbidity is the measure of the extent to which the water loses its transparency due to the presence of suspended particles. Turbidity is measured in nephelometric turbidity units.