Abstract: Ef-Chlor is a product manufactured by Hind Pharma containing Sodium dichloroisocyanurate (NaDCC) as its major component, which is an effective compound used for water purification, disinfection and sterilization. Ef-Chlor ensures maximum protection against a wide range of disease-causing pathogens. This paper provides information on different areas where Ef-Chlor tablets containing NaDCC can act in an effective manner and could substitute the old methods, formulations and compounds still used for purifying water. This paper summarizes the effectiveness of NaDCC (major component of Ef-Chlor) over of all other traditional formulations with emphasize on its good antimicrobial activity, more safety, better stability, long shelf life, prolonged protection and affordability.