|  | Microbiological test results | |||||||
---|---|---|---|---|---|---|---|---|---|
Premises | Samples | January – December 2003 | January – May 2004 | June – July 2004 | Olympic Games | ||||
 |  | Total | Positive (%) | Total | Positive (%) | Total | Positive (%) | Total | Positive (%) |
Water supply systems* | 1657 | 256 | 30 (11.7) | 491 | 81 (16.4) | 610 | 78 (12.7) | 300 | 38 (12.6) |
Water supply systems†| 2142 | 292 | 32 (10.9) | 767 | 101 (13.1) | 870 | 178 (20.4) | 213 | 36 (16.9) |
Swimming pools | 560 | 123 | 16 (13.0) | 66 | 6 (9.0) | 170 | 31 (18.2) | 201 | 21 (10.4) |
Cooling towers | 204 | 81 | 37 (45.6) | 15 | 0 (0.0) | 64 | 22 (34.0) | 44 | 7 (15.9) |
Decorative fountains | 151 | 78 | 0 (0.0) | 32 | 2 (2.5) | 36 | 0 (0.0) | 5 | 0 (0.0) |
Bottled water plants | 252 | 98 | 0 (0.0) | 105 | 0 (0.0) | 34 | 0 (0.0) | 15 | 0 (0.0) |
Seacoast | 58 | 11 | 2 (18.1) | 27 | 0 (0.0) | 16 | 0 (0.0) | 4 | 0 (0.0) |
Total | 5024 | 939 | 117 (12.4) | 1503 | 190 (12.6) | 1800 | 309 (17.1) | 782 | 102 (13.0) |