What is the recommended level of chlorine in Swimming pool?
Residual chloride levels in: (i.e. after the contact period of one hour) Drinking water- >/= 0.5 mg/L or ppm Swimming pools- >/= 1.0 mg/L To kill Cyclops in Drinking water - >/= 2.0 mg/L Residual chlorine level can be measured using chloroscope/ Ohotoluidine test.
>0.5 mg/L
>0.8 mg/L
>1 mg/L
>5 mg/L
DNB 2018