This bill introduces new regulations for public community water systems in New Jersey to improve the safety and quality of drinking water, particularly concerning Legionella bacteria. It defines "disruption of the public community water system" and requires owners or operators of systems with over 100 service connections to maintain specific disinfectant residual levels. The Department of Environmental Protection (DEP) is tasked with creating best management practices to address water quality disruptions and mandates the implementation of a distribution system maintenance plan within six months of the DEP's rule promulgation. The bill also emphasizes timely reporting of disruptions and the establishment of a data management system for tracking incidents.

Additionally, the bill requires certain buildings and facilities, such as hospitals and residential structures, to develop water management programs to reduce Legionella growth, following recognized standards. The Department of Health will conduct investigations into Legionnaires' disease cases and create guidelines for outbreak responses. It also includes provisions for public notifications in multiple languages and establishes a public dashboard for tracking Legionnaires' disease cases. Owners or operators of qualifying facilities must maintain a written water management program for at least five years and comply with testing and reporting requirements, facing penalties for non-compliance. The Department of Health is also responsible for annual reporting on Legionnaires' disease cases and water sampling results, and must adopt rules and regulations within 24 months of the bill's effective date. Notably, the provisions do not apply to residential properties with four or fewer dwelling units.