The Herald-Whig reports that the Illinois Veterans Home, Quincy, Ill., unveiled a new water treatment and delivery system that costs nearly $5 million. Legionnaires’ disease killed 12 people and sickened another 53 in 2015 at the facility.
Water from the Quincy water system enters the treatment plant, where it is tested and treated with additional disinfectant chemicals daily. After that, water travels to individual buildings and heated to 165 degrees to kill bacteria. Then mixing valves cool the water before it is released within the building's water system. Backflow valves also have been installed to prevent the growth of legionella.
More details here.
Source: The Herald-Whig.