Sodium Hypochlorite Dosage for Household and Emergency Water Treatment

Publication year
Emergency type

Point-of-use  (POU)  water  treatment  with  sodium  hypochlorite  (NaOCl)  has been  proven  to  reduce  diarrheal  disease  in  developing  countries.  However, program  implementation  is  complicated  by  unclear  free  chlorine  residual guidelines  for  POU  water  treatment  and  difficulties  in  determining  appropriate dosage  recommendations.  The  author  presents  evidence  supporting  proposed criteria  for  household  water  treatment  for  free  chlorine  residuals  of  <  2.0  mg/L1  h  after  NaOCl  addition  and  >  0.2  mg/L  aft