|
Tap water appliances, hotel X, Norway, March 2007 |
|||
| Tap water appliances |
Use |
Filter |
Time since last filter change* |
|
|
|||
| Ice machine in a small supplementary kitchen (meeting rooms' kitchen) |
Ice cubes for water jugs in meeting rooms |
5 μm cellulose filter (Cuno Micro-Klean II, G78 B2) |
18 months |
| Ice machine in the bar |
Ice cubes for drinks in the bar |
Directly connected to water pipe |
NA |
| Water dispensers in meeting rooms |
Drinking water in meeting rooms |
5 μm carbon filter (Omnipure K 2520P) and <0.5 μm ceramic filter (NSF standard 42&53) |
5.5 months |
| Water purification system in the main kitchen |
Bottled drinking water in the dining hall |
1 μm particle filter and carbon filter, and an UV filter |
Changed 2–3 times a year† |
|
NA, non applicable; NSF, National Sanitation Foundation; UV, ultraviolet * Recommended time to replace filters is generally 6–7 months † No controlled documentation available | |||
Hajdu et al. BMC Infectious Diseases 2008 8:152 doi:10.1186/1471-2334-8-152 |
|||