This bill requires the Department of Environmental Protection (DEP), the Department of Health (DOH), and operators of public water systems to implement measures to prevent and control Legionnaires' disease. Key provisions include maintaining a minimum detectable disinfectant residual of free chlorine of at least 0.3 milligrams per liter, conducting regular testing of disinfectant levels, and notifying customers of any disruptions in the water distribution system that could lead to increased Legionella bacteria levels. The DEP is also responsible for creating a publicly accessible database of these disruptions and establishing guidelines for notification. Additionally, the bill outlines penalties for non-compliance and mandates the DEP to submit annual reports on the effectiveness of these measures.

Moreover, the bill requires the DOH to investigate all reported cases of Legionnaires' disease and provide testing information for affected individuals. It mandates certain buildings, especially healthcare facilities and those with water systems that can aerosolize water, to implement water management programs to minimize Legionella growth. The DOH is tasked with collaborating with the DEP and other stakeholders to develop regulations and an annual report on Legionnaires' disease cases. A public awareness campaign will also be launched to educate consumers about Legionella bacteria and prevention methods, emphasizing the importance of maintaining safe water quality and protecting public health.