ABSTRACT
This chapter describes the occurrence of Cryptosporidium in the aquatic environment, methods for recovery of oocysts in water, drinking water treatment for Cryptosporidium control, and regulation of Cryptosporidium in water supplies. It focuses on the practical application of many of physical and chemical disinfectants and physical removal technologies for control of the waterborne transmission route. Drinking water professionals thought the days of large waterborne disease outbreaks in the developed world had vanished with the widespread use of filtration and disinfection of drinking water supplies. The US Environmental Protection Agency had finalized the Surface Water Treatment Rule to control Giardia and viruses in drinking water. In Finland a year-long study used improved methods to examine waterborne pathogens from seven lakes and 15 rivers in the southwest, looking for correlations between pathogen and indicator detection. Filters used for Cryptosporidium sampling are generally used for Giardia sampling as well, because both waterborne parasites are of interest to water suppliers and public health officials.
