Which statement is true regarding decorative fountains and Legionella risk?

The statement that risk can be minimized by proper treatment and maintenance is accurate because effective management strategies significantly reduce the likelihood of Legionella growth in decorative fountains. Regular maintenance activities include cleaning and disinfection, monitoring water temperature, and ensuring appropriate water chemistry, all of which help create an environment that is less conducive to the survival and proliferation of Legionella bacteria.

Furthermore, fountains can be a source of aerosolized water droplets that may carry Legionella, so it is essential to adopt a proactive approach in managing them. Implementing these preventive measures can greatly decrease the likelihood of Legionella outbreaks associated with decorative water features, making proper treatment and maintenance a critical aspect of Legionella risk management.

In contrast, simply changing the water frequently may not be sufficient to eliminate the risk entirely, as the bacteria can still thrive if the water system's overall maintenance and treatment are inadequate. Additionally, assuming that indoor fountains present no risk overlooks the possibility of aerosol dispersion, which can occur regardless of the fountain's location. Lastly, while draining fountains can be a part of risk mitigation, it is not always practical or necessary for all types of fountains. Regular thorough maintenance is therefore emphasized as the most effective means of decreasing overall Legionella risk.