At that time, in order to “kill hepatitis A, hepatitis B to kill” as the two stars standards, mandatory drying out a number of counter products and non-brand-name manufacturers.
According to the CDC, it takes less than a minute for E. coli to be inactivated if chlorine levels are adequate, about 16 minutes to control HepatitisA virus, about 45 minutes to kill off the Giardia parasite and over 10 days for a Crypto parasite.