In order to survey the occurrence of waterborne viruses in Korean surface water, a
total of 192 water samples from July 2003 to January 2006 were collected and analyzed.
The presence of waterborne viruses was investigated by total culturable virus assay
(TCVA) using buffalo green monkey kidney (BGMK) cells. The results showed that 63 of
192 samples (32.8percent) were positive for waterborne viruses with the average
concentration of 3.1 18 most probable numbers (MPN)/100 L. The relationship between the
occurrence of the viruses and the physicochemical environmental factors revealed that
there was a significant correlation between the turbidity of water and the occurrence
of the viruses. It was also noted that the water temperature might have some
relationship with the occurrence of the viruses, as the frequency of the viruses was
higher in low temperature or winter season. Therefore, the occurrence of waterborne
viruses in Korean surface water might be affected by the physicochemical environmental
factors such as turbidity and water temperature.