Investigation of Factors Affecting the Removal of Cryptosporidium parvum Oocysts in Porous Media Filters

Project Staff: 

Principal Investigator: Raymond Hozalski, Assistant Professor, Department of Civil Engineering

Additional Staff: Xiaojun Dai, Research Associate, Department of Civil Engineering


USGS-WRRI 104B/ CAIWQ Competitive Grants Program

Project Duration: 

March 1999 - February 2001


Giardia and Cryptosporidium are pathogenic protozoa commonly found in drinking water supplies obtained from surface sources. Their removal from water is highly dependant on the performance of filters. Raymond Hozalski was awarded a grant to compare particle removal in "clean" filters and in filters containing biofilm to determine if the presence of biofilm aids in the removal of these protozoa.