Drinking Water
Contents
General Overview
Source Occurrence Concentration
Sewage Intrusion
Runoff Contamination
Treatment
Engineering Controls
Chlorine
Log10 reduction value: 1 (baseline) to 3 (maximum) for protozoa, 3 (baseline) to 6 (maximum) for bacteria and viruses.
Filtration
porous ceramic filtration - Log10 reduction value: 4 (baseline) to 6 (maximum) for protozoa, 2 (baseline) to 6 (maximum) for bacteria, 0.5 (baseline) to 4 (maximum) for viruses (Sobsey et al. 2008).
biosand filtration - Log10 reduction value: 2 (baseline) to 4 (maximum) for protozoa, 1 (baseline) to 3 (maximum) for bacteria, 0.5 (baseline) to 3 (maximum) for viruses (Sobsey et al. 2008).
Pathogen Specific
Dose response assessment
Pathogens with oral data available
Francisella tularensis
Campylobacter (human)
Vibrio cholera (human)
Cryptosporidium (human)
Escherichia coli (human)
Giardia (human and animals)
Echovirus (human)
Enteroviruses
Rhinovirus (human)
Endamoeba coli (human)
enterohemorrhagic Escherichia coli
Shigella species (human)
