The Hotels and hospitals Issue Water Treatment
How does FRT Work? Bio-film Issue
FRT Unit Installation Configuration Cooling Water Issue
Description of the Equipment Benefits

A DHSS (Department of Health and Social Security-United Kingdom) survey has shown Legionella is present in big buildings - at least one strain was found in 53% of the hotels sampled. Continued surveillance has also shown that buildings where outbreaks have occurred have had further outbreaks in later years.

 There are hotels where the rooms are used infrequently, and where there is static water in the pipe work. The outbreak is caused when the bacteria starts to multiply because of the lack of disinfections within the system. It grows in the slime in the pipes. The trouble is probably due to static water lying around in the pipes for a long time where bacteria has started to grow like crazy - particularly in hot climates where the pipes get warm.

 Warm water-samples (total of 476) were taken from showers of 119 hotels (predominantly 4-star large buildings): Germany(38), Austria (12), Italy(28), Spain(20) and the UK(21). According to Tiefenbrunner, F. et al. 1993, Legionella was identified. More than 50% of the European hotels are contaminated with Legionella.

Chlorination /ozonation are incapable of eradicating Legionella for short residual disinfections periods in excess of 3-4 hours for chlorination and 21 minutes for ozonation.

A DHSS survey has shown how commonly Legionella is present in hospitals. At least one strain was found in 70% of the hospitals sampled. An outbreak of Legionnaires disease in Glasgow hospital in 1990 led to an interesting study of the source of the outbreak. The cleaning and chlorination of the storage tank failed to eliminate the Legionella organism in it, and further subsequent sampling showed that Legionella was still present in the cold water storage tanks and in the hot and cold distributor system.

Hotels, hospitals, business premises and residential establishments were examined and 53%, 70% & 40%, respectively were found to be positive for Legionella (Leggionella Disease; Introduction to the organism R.B. Fitzgeorge. The Journal of the Institute of Hospitals Engineering).

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