"The Legionnaires' Disease Prevention Act"; establishes grant program for restoration or removal of buildings with compromised water supply systems; appropriates $5 million.

The Legionnaires' Disease Prevention Act establishes a $5 million grant program to help owners of historic buildings (pre-1910 or architecturally significant structures) with compromised water systems cover renovation or removal costs. Grants cover up to 50% of eligible project costs, capped at $5,000 per project. The bill also requires public water systems with over 100 connections to maintain specific disinfectant levels (0.3 mg/L chlorine or 1.0 mg/L chloramine) and develop maintenance plans to prevent Legionella bacteria growth. These measures aim to reduce Legionnaires' disease risks in aging infrastructure while targeting historic properties.