Batch solar disinfection inactivates oocysts of Cryptosporidium parvum and cysts of Giardia muris in drinking water.

Suspensions of oocysts and cysts were exposed to simulated global solar irradiation for different exposure times at a constant temperature of 40°C. Infectivity tests were carried out using mice. Exposure times of 10 h (total optical dose c. 30 kJ) rendered C. parvum oocysts noninfective. Giardia muris cysts were rendered completely noninfective within 4 h (total optical dose >12 kJ). These results demonstrate that SODIS is an appropriate household water treatment technology for use as an emergency intervention. J Appl Microbiol. 2006;101(2):453-63.