An Act amending Title 27 (Environmental Resources) of the Pennsylvania Consolidated Statutes, providing for Legionnaires' disease risk management; establishing the Legionnaires' Disease Awareness Fund; and imposing duties on the Department of Environmental Protection and the Department of Health.

HB 2085 requires public water systems serving over 100 connections to maintain minimum disinfectant levels (0.5 mg/L chlorine or 1.0 mg/L chloramine) to prevent Legionella bacteria growth. It mandates these systems to develop annual maintenance plans based on state-developed "best management practices" covering infrastructure monitoring, flushing schedules, and stagnation prevention. The bill also requires public water systems to report disruptions (like treatment changes or infrastructure failures) to the Department of Environmental Protection within 72 hours. Additionally, it creates a Legionnaires' Disease Awareness Fund for public education and imposes duties on both the DEP and Department of Health to manage risk and investigate outbreaks. This directly affects water providers, building owners, and public health agencies across Pennsylvania.