This paper summarizes selected data from a pathogen monitoring program in the Grand River
watershed in Southern Ontario, Canada. The indicators/pathogens discussed in the paper include: fecal
coliforms, E. coli, E. coli O157:H7, and Campylobacter spp. Data is presented for one year of
monitoring. Fecal coliforms were found in 95 to 100% of all samples and E. coli were found in
91 to 100%. Campylobacter was less prevalent but was found in 59 to 85% of all samples
nonetheless. E. coli O157:H7 was isolated and confirmed in a five-step process. While the
"presumptive" tests showed that it may be present in 32 to 59% of samples and "confirmed" tests
showed it to be present in 2 to 14% of all samples only 0 to 7% of samples were carried through
to the "complete" stage. It appears as if Campylobacter is more common than may have been
previously expected. E. coli O157:H7, on the other hand, is perhaps not as common explaining
why the interruption (or inadequacy) of drinking water disinfection systems does not lead to
more frequent outbreaks of this pathogen. Includes 6 references, tables, figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 1.1 MB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 16 |
| Published : | 11/02/2003 |
