• Are heavily loaded with pathogens.
• currently treated with sodium hypochlorite or chlorine adverse effects – itchy scalp and skin, burning eyes.
• Chlorine gets consumed rapidly in the swimming and is unable to penetrate the biofilm on the surface of the pool and even within pipes that carry water into or out of the pool to destroy the microorganism living beneath and the pool becomes a source of infection. 

While using Purojal DW in the swimming pool due to its higher efficacy in dealing with microorganisms it is able to remove biofilm and thus the source of infection. – Purojal breaks down in the presence of sunlight into salt and water as it is environmental friendly and biodegradable.