Air-conditioning and drinking facilities inside buildings, including cooling towers and humidification systems, use tap water. The cooling mist generators in the plazas and pathways of the site use tap water. Water quality tests such as residual chlorine concentration tests are conducted on the tap water at the water source of each facility that uses water every day before the Expo opens to ensure that the water is safe to use.
Some facilities, such as flush toilets and some water basins, which do not generate aerosols and are not expected to result in the direct inhalation of aerosols use recycled tap water or rainwater.
Legionnaires' disease is said to be transmitted by inhalation of aerosols or aspiration of contaminated water. The risk of infection from touching contaminated water with hands or feet is considered low.
Q.
What is the source of water for the facilities at the Expo site that use water and mist?
A.