Legionellae

Abstract

Legionellae cannot be eradicated from the water supply, since they are naturally occurring and ubiquitous. Routine bacteriologic culturing of man made aquatic environments is not recommended (Soule et al 1995). Therefore any water use that results in production of aerosols should be regularly evaluated to ensure the source has not been contaminated with the bacteria. Any aerosolised water entering a sterile area such as the lungs should be sterile. Tap water should not be used to rinse any respiratory therapy equipment. Routine maintenance of water supplies to eliminate sediment and scale from tanks and trays is essential (Benenson 1995, Lowry & Tompkins 1993). Australian & New Zealand Standard AS/NZ 3666-1995 Parts 1 and 2 outline these requirements.