Volume 9, Number 12—December 2003
Research
Emerging Genotype (GGIIb) of Norovirus in Drinking Water, Sweden
Karin Nygård*, Maria Torvén*, Camilla Ancker†, Siv Britt Knauth†, Kjell-Olof Hedlund*, Johan Giesecke*, Yvonne Andersson*, and Lennart Svensson*‡
Table
Results from bacteriologic analysis of water samples, Sweden, 2001
| Place | Date (2001) | Heterotrophs/ mL (2d) | Coliforms/ 100 mL | E. colia/ 100 mL | Sulphite-reducing clostridia/100 mL | Fecal streptococci /100 mL |
|---|---|---|---|---|---|---|
| Tap water, kitchen |
06/12 |
80 |
140 |
47 |
- |
- |
| Water works |
06/18 |
690 |
100 |
32 |
<1 |
2 |
| Tap water, kitchen |
06/18 |
530 |
130 |
40 |
<1 |
1 |
| Well 1 |
06/20 |
>300 |
430 |
>100 |
- |
- |
| Well 2 |
06/20 |
>300 |
1 |
<1 |
- |
<1 |
| Well 3 |
06/27 |
2,100 |
19 |
1 |
- |
- |
| Old well |
06/27 |
1,100 |
630 |
22 |
- |
- |
| Storm water |
06/27 |
2,000 |
190 |
3 |
- |
- |
| Well 2 |
07/03 |
1,300 |
160 |
6 |
- |
- |
| Beach | 07/17 | 16,000 | 1 | - | - | - |
aEscherichia coli.
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