| chlorine residual efficiency in inactivating bacteria from secondary contamination in isfahan, 2002. | to investigate the inactivation of potential pathogens, we evaluated survival rates for escherichia coli, enterococcus faecalis, aeromonas hydrophila and salmonella typhi in samples taken from the isfahan drinking water system. chlorine residual, ph, temperature and total organic carbon levels were measured. the organism most sensitive to chlorine was a. hydrophila. it was inactived in < 100 minutes at chlorine levels of 0.11 mg/l to 0.90 mg/l. the other 3 organisms showed higher resistance. e. ... | 2005 | 16602463 |