In an outbreak of illness associated with a communal
rainwater supply, bird faeces were implicated as a source of contamination. Salmonella
spp. are relatively sensitive to disinfection. Within a water safety plan, control measures
that can be applied to manage risk include protection of raw water supplies from
human and animal waste, adequate treatment and protection of water during distribution.
Escherichia coli (or, alternatively, thermotolerant coliforms) is a generally reliable
indicator for Salmonella spp. in drinking-water supplies.