The Role of Legionella in Indoor Air Quality And Other Related Information

Legionella as Agents that Effect Indoor Air Quality

Legionella are common organisms in the environment and can be found in many potable and non potable water sources, along with some soils.
Legionella are relatively chlorine tolerant when living as intra cellular parasites, enabling the organisms to survive normal treatment and pass into distribution systems.
Low and even non-detectable levels of the organism can colonize a water source and grow to high concentrations under the right conditions.

Locations where Legionella can be found include:

Cooling towers, evaporative condensers, and fluid coolers that use evaporation to dissipate heat.
Domestic hot-water systems with water heaters that operate below 60°C (140°F) and deliver water to taps below 50°C (122°F).